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Biography

Banana is the common name for herbaceous plant s of the genus Musa (genus)|Musa and for the fruit they produce. It is one of the oldest cultivated plants. They are native to tropical South Asia|South and Southeast Asia , and are likely to have been first domesticated in Papua New Guinea . Today, they are cultivated throughout the tropics .. agroforestry.net They are grown in at least 107 countries, primarily for their fruit, and to a lesser extent to make fiber , banana wine and as ornamental plant s. Its fruits, rich in starch , grow in clusters hanging from the top of the plant. They come in a variety of sizes and colors when ripe, including yellow, purple, and red.

Almost all modern edible Parthenocarpy|parthenocarpic bananas come from two wild species – Musa acuminata and Musa balbisiana . The Binomial nomenclature|scientific names of bananas are Musa acuminata , Musa balbisiana or hybrids Musa acuminata × balbisiana , depending on their genomic constitution. The old scientific names Musa sapientum and Musa paradisiaca are no longer used.

Banana is also used to describe Ensete|Enset and Fe'i banana s, neither of which belong to the aforementioned species. Enset bananas belong to the genus Ensete while the taxonomy of Fe'i-type cultivar s is uncertain.

In popular culture and commerce , "banana" usually refers to soft, sweet "dessert" bananas. By contrast, Banana Cultivar Groups| Musa cultivar s with firmer, starchier fruit are called plantain s or "cooking bananas". The distinction is purely arbitrary and the terms "plantain" and "banana" are sometimes interchangeable depending on their usage.

Description

The banana plant is the largest herbaceous flowering plant. published in the Royal Horticultural Society Journals, May 2002 The plants are normally tall and fairly sturdy and are often mistaken for tree s, but their main or upright stem is actually a pseudostem that grows tall, growing from a corm . Each pseudostem can produce a single bunch of bananas. After fruiting, the pseudostem dies, but offshoots may develop from the base of the plant. Many varieties of bananas are perennial .

Leaves are spirally arranged and may grow long and wide. They are easily torn by the wind, resulting in the familiar frond look.Greenearth, Inc., . Retrieved 2008.12.20.

Each pseudostem normally produces a single inflorescence , also known as the banana heart . (More are sometimes produced; an exceptional plant in the Philippines produced five.) The inflorescence contains many bract s (sometimes incorrectly called petals) between rows of flowers. The female flowers (which can develop into fruit) appear in rows further up the stem from the rows of male flowers. The ovary is Ovary (plants)|inferior , meaning that the tiny petals and other flower parts appear at the tip of the ovary.

The banana fruits develop from the banana heart, in a large hanging cluster, made up of tiers (called hands ), with up to 20 fruit to a tier. The hanging cluster is known as a bunch, comprising 3–20 wikt:tier#noun 2|tier s, or commercially as a "banana stem", and can weigh from . In common usage, bunch applies to part of a tier containing 3–10 adjacent fruits.

Individual banana fruits (commonly known as a banana or 'finger') average , of which approximately 75% is water and 25% dry matter. There is a protective outer layer (a Peel (fruit)|peel or skin) with numerous long, thin strings (the phloem Vascular bundle|bundles ), which run lengthwise between the skin and the Eating|edible inner portion. The inner part of the common yellow dessert variety splits easily lengthwise into three sections that correspond to the inner portions of the three carpel s.

The fruit has been described as a "leathery berry".James P. Smith, Vascular Plant Families . Mad River Press, 1977. In cultivated varieties, the seeds are diminished nearly to non-existence; their remnants are tiny black specks in the interior of the fruit.

Bananas are naturally slightly Radioactive decay|radioactive , CRC Handbook on Radiation Measurement and Protection, Vol. 1 p. 620 Table A.3.7.12, CRC Press, 1978. Chemistry.about.com. Retrieved on 2011-10-02. more so than most other fruits, because of their high potassium content, and the small amounts of the isotope potassium-40 found in naturally occurring potassium.Stephen Cass, Corinna Wu (2007) Discover: Science, Technology, and the Future , published online June 4, 2007 Nuclear power debate|Proponents of nuclear power sometimes refer to the banana equivalent dose of radiation to support their arguments.. Enochthered.wordpress.com (July 25, 2007). Retrieved on 2011-10-02.

Taxonomy

The genus Musa is in the family Musaceae . The APG II system , of 2003 (unchanged from 1998), assigns Musaceae to the
order Zingiberales in the clade commelinid s in the monocots|monocotyledonous flowering plants .
Some sources assert that the banana's genus, Musa (genus)|Musa , is named for Antonius Musa , physician to the Emperor Augustus .Liberty Hyde Bailey, The Standard Cyclopedia of Horticulture . 1916. Others say that Linnaeus , who named the genus in 1750, simply adapted an Arabic word for banana, wiktionary:???|mauz . The word banana itself might have come from the Arabic banan , which means "finger",Dan Keppel, Banana , Hudson Street Press, 2008; p. 44. or perhaps from Wolof language|Wolof wiktionary:banaana|banaana . The genus contains many species; several produce edible fruit, while others are cultivated as ornamentals.

Banana classification has long been a problematic issue for taxonomists due to the way Linnaeus originally classified bananas as two species based only on their methods of consumption, Musa sapientum for dessert bananas and Musa paradisiaca for plantain s. However, this simplistic classification has proved to be inadequate to address the sheer number of cultivar s (many of them Synonym (taxonomy)|synonymous ) existing in its primary center of diversity, Southeast Asia .

Ernest Cheesman first discovered that Musa sapientum and Musa paradisiaca , described by Linnaeus, were actually cultivar s and descendants of two wild and seedy species, Musa acuminata and Musa balbisiana , both first described by Luigi Aloysius Colla . He recommended their abolition in favor of reclassifying bananas according to three morphologically distinct cultivars – those primarily exhibiting the botanical characteristics of Musa balbisiana , those primarily exhibiting the botanical characteristics of Musa acuminata , and those with characteristics that are the combination of the two.

Researchers Norman Simmonds and Ken Shepherd proposed the genome-based nomenclature system in 1955. This system eliminated almost all the difficulties and inconsistencies of the nomenclature system of bananas based on Musa sapientum and Musa paradisiaca . Despite this, Musa paradisiaca is still recognized by some authorities today, leading to confusion.

Generally, modern classifications of banana cultivars follow Simmonds' and Shepherd's system. The Botanical name|accepted names for bananas are Musa acuminata , Musa balbisiana or Musa acuminata × balbisiana , depending on their genetic ancestry.

Synonym (taxonomy)|Synonyms include:

Musa × sapientum L.

Musa paradisiaca L.

Musa × paradisiaca L.

Musa paradisiaca L. subsp. Musa sapientum J. G. Baker

Musa rosacea N. J. von Jacquin

Musa violacea J. G. Baker

Musa cliffortiana L.

Musa dacca P. F. Horaninow

Musa rosacea N. J. von Jacquin

Musa × paradisiaca L. subsp. sapientum (L.) C. E. O. Kuntze

Musa × paradisiaca var. dacca (P. F. Horaninow) J. G. Baker ex K. M. Schumann

For the banana cultivar previously referred to as Musa sapientum , see Latundan Banana . For bananas and plantains previously referred to as Musa paradisiaca , see Plantain .

For a list of the cultivars classified under the new system see Banana cultivar groups .

Species	Musa acuminata	Musa balbisiana
Color of pseudostem	Black or grey-brown spots	Unmarked or slightly marked
Petiole canal	Erect edge, with scarred inferior leaves, not against the pseudostem	Closed edge, without leaves, against the pseudostem
Stalk	Covered with fine hair	Smooth
Pedicel s	Short	Long
Ovum	Two regular rows in the locule	Four irregular rows in the locule
Elbow of the bract	Tall (< 0.28)	Short (> 0.30)
Bend of the bract	The bract wraps behind the opening	The bract raises without bending behind the opening
Form of the bract	Lance- or egg-shaped, tapering markedly after the bend	Broadly egg-shaped
Peak of the bract	Acute	Obtuse
Color of the bract	Dark red or yellow on the outside, opaque purple or yellow on the inside	Brown-purple on the outside, crimson on the inside
Discoloration	The inside of the bract is more bright toward the base	The inside of the bract is uniform
Scarification of the bract	Prominent	Not prominent
Free tepal of the male flower	Corrugated under the point	Rarely corrugated
Color of the male flower	White or cream	Pink
Color of the markings	Orange or bright yellow	Cream, yellow, or pale pink

Historical cultivation

Early cultivation

Southeast Asian farmers first domestication|domesticated bananas. Recent archaeology|archaeological and palaeoenvironmental evidence at Kuk Swamp in the Western Highlands Province of Papua New Guinea suggests that banana cultivation there goes back to at least 5000 Common Era|BCE , and possibly to 8000 BCE. It is likely that other species were later and independently domesticated elsewhere in southeast Asia. Southeast Asia is the region of Center of diversity|primary diversity of the banana. Areas of secondary diversity are found in Africa , indicating a long history of banana cultivation in the region.

Phytolith discoveries in Cameroon dating to the first millennium BCE triggered an as yet unresolved debate about the date of first cultivation in Africa. There is linguistic evidence that bananas were known in Madagascar around that time. The earliest prior evidence indicates that cultivation dates to no earlier than late 6th century CE. It is likely, however, that bananas were brought at least to Madagascar if not to the East African coast during the phase of Malagasy people|Malagasy colonization of the island from South East Asia c. 400 CE.Randrianja, Solofo abd Stephen Ellis: Madagascar: A Short History . University of Chicago Press, 2009 ISBN 1-85065-947-8.

The Buddhist story Vessantara Jataka briefly mentions the banana, the king Vessantara has found a banana tree (among some other fruit trees) in the jungle, that bear bananas the size of an elephant's tusk.

The banana may have been present in isolated locations of the Middle East on the eve of Islam . There is some textual evidence that Muhammad was familiar with bananas. The spread of Islam was followed by far-reaching diffusion. There are numerous references to it in Islamic texts (such as poems and hadith s) beginning in the 9th century. By the 10th century the banana appears in texts from Palestine and Egypt . From there it diffused into north Africa and Al-Andalus|Muslim Iberia . During the medieval ages, bananas from Granada were considered among the best in the Arab world. In 650, Islamic conquerors brought the banana to Palestine. Today, banana consumption increases significantly in Islamic countries during Ramadan , the month of daylight fasting.

Bananas were introduced to the Americas by Portugal|Portuguese sailors who brought the fruits from West Africa in the 16th century.
The word banana is of West African origin, from the Wolof language , and passed into English via Spanish or Portuguese.

Many Musa (genus)#Selected species|wild banana species as well as cultivar s exist in extraordinary diversity in New Guinea , Malaysia , Indonesia , China , and the Philippines .

Plantation cultivation in the Caribbean, Central and South America

In the 15th and 16th century, Portuguese colonists started banana plantations in the Atlantic Islands, Brazil , and western Africa. North Americans began consuming bananas on a small scale at very high prices shortly after the Civil War, though it was only in the 1880s that it became more widespread.Dan Koeppel, Banana: The Fate of the Fruit that Changed the World (New York: Hudson Street Press, 2008), pp. 51–53 ISBN 0-452-29008-2 As late as the Victorian Era , bananas were not widely known in Europe, although they were available. Jules Verne introduces bananas to his readers with detailed descriptions in Around the World in Eighty Days (book)|Around the World in Eighty Days (1872).

The earliest modern plantations originated in Jamaica and the related Western Caribbean Zone , including most of Central America . It involved the combination of modern transportation networks of steamships and railroads with the development of refrigeration that allowed bananas to have more time between harvesting and ripening. North America shippers like Lorenzo Dow Baker and Andrew Preston , the founders of the Boston Fruit Company started this process in the 1870s, but railroad builders like Minor C. Keith|Minor C Keith also participated, eventually culminating in the multi-national giant corporations like today's Chiquita Brands International and Dole Food Company|Dole . These companies were monopolistic, vertically integrated (meaning they controlled growing, processing, shipping and marketing) and usually used political manipulation to build enclave economy|enclave economies (economies that were internally self sufficient, virtually tax exempt, and export oriented that contribute very little to the host economy). Their political maneuvers, which gave rise to the term Banana republic for states like Honduras and Guatemala, included working with local elites and their rivalries to influence politics or playing the international interests of the United States, especially during the Cold War , to keep the political climate favorable to their interests.

Peasant cultivation for export in the Caribbean

The vast majority of the world's bananas today are cultivated for family consumption or for sale on local markets. India is the world leader in this sort of production, but many other Asian and African countries where climate and soil conditions allow cultivation also host large populations of banana growers who sell at least some of their crop.
There are peasant sector banana growers who produce for the world market in the Caribbean, however. The Windward Islands are notable for the growing, largely of Cavendish bananas, for an international market, generally in Europe but also in North America. In the Caribbean, and especially in Dominica where this sort of cultivation is widespread, holdings are in the 1–2 acre range. In many cases the farmer earns additional money from other crops, from engaging in labor outside the farm, and from a share of the earnings of relatives living overseas. This style of cultivation often was popular in the islands as bananas required little labor input and brought welcome extra income. Banana crops are vulnerable to destruction by cyclone s.
After the signing of the NAFTA agreements in the 1990s, however, the tide turned against peasant producers. Their costs of production were relatively high and the ending of favorable tariff and other supports, especially in the European Economic Community, made it difficult for peasant producers to compete with the bananas grown on large plantations by the well capitalized firms like Chiquita and Dole. Not only did the large companies have access to cheap labor in the areas they worked, but they were better able to afford modern agronomic advances such as fertilization. The "dollar banana" produced by these concerns made the profit margins for peasant bananas unsustainable.
Caribbean countries have sought to redress this problem by providing government supported agronomic services and helping to organize producers' cooperatives. They have also been supporters of the Fair Trade movement which seeks to balance the inequities in the world trade in commodities.

East Africa

Most farms supply local consumption. Cooking bananas represent a major food source and a major income source for smallhold farmers. In East African Highland bananas are of greatest importance as a staple food crop. In countries such as Uganda , Burundi , and Rwanda per capita consumption has been estimated at per year, the highest in the world.

Modern cultivation

All widely cultivated bananas today descend from the two wild bananas Musa acuminata and Musa balbisiana . While the original wild bananas contained large seeds, diploid or polyploidy|polyploid cultivars (some being Hybrid (biology)|hybrid s) with tiny seeds are preferred for human raw fruit consumption. These are propagated asexual reproduction|asexually from offshoots. The plant is allowed to produce two shoots at a time; a larger one for immediate fruiting and a smaller "sucker" or "follower" to produce fruit in 6–8 months. The life of a banana plantation is 25 years or longer, during which time the individual stools or planting sites may move slightly from their original positions as lateral rhizome formation dictates.

Cultivated bananas are parthenocarpy|parthenocarpic , which makes them sterile and unable to produce viable seeds. Lacking seeds, propagation typically involves farmers removing and transplanting part of the underground stem (called a corm). Usually this is done by carefully removing a sucker (a vertical shoot that develops from the base of the banana pseudostem) with some roots intact. However, small sympodial corms, representing not yet elongated suckers, are easier to transplant and can be left out of the ground for up to two weeks; they require minimal care and can be shipped in bulk.

It is not necessary to include the corm or root structure to propagate bananas; severed suckers without root material can be propagated in damp sand , although this takes somewhat longer.

In some countries, commercial propagation occurs by means of tissue culture . This method is preferred since it ensures disease-free planting material. When using vegetative parts such as suckers for propagation, there is a risk of transmitting diseases (especially the devastating Panama disease ).

As a non-seasonal crop, bananas are available fresh year-round.

Cavendish

In global commerce, by far the most important cultivar s belong to the triploid Banana Cultivar Groups#AAA group|AAA cultivar group|group of Musa acuminata , commonly referred to as Cavendish group bananas. They account for the majority of banana exports, despite only coming into existence in 1836.. Homecooking.about.com (May 5, 2011). Retrieved on 2011-10-02. The cultivars Dwarf Cavendish and Grand Nain (Chiquita Banana) gained popularity in the 1950s after the previous mass-produced cultivar, Gros Michel banana|Gros Michel (also an AAA group cultivar), became commercially unviable due to Fusarium oxysporum|Panama disease , a fungus which attacks the roots of the banana plant.

Ease of transport and shelf life rather than superior taste make the Dwarf Cavendish the main export banana.

Even though it is no longer viable for large scale cultivation, Gros Michel is not extinct and is still grown in areas where Panama disease is not found..Retrieved on 2012-13-12. Likewise, Dwarf Cavendish and Grand Nain are in no danger of extinction, but they may leave supermarket shelves if disease makes it impossible to supply the global market. It is unclear if any existing cultivar can replace Cavendish bananas, so various Hybrid (biology)|hybrid isation and genetic engineering programs are attempting to create a disease-resistant, mass-market banana.

Ripening

Export bananas are picked green, and ripen in special rooms upon arrival in the destination country. These rooms are air-tight and filled with ethylene gas to induce ripening. The vivid yellow color normally associated with supermarket bananas is in fact a side effect of the artificial ripening process. Flavor and texture are also affected by ripening temperature. Bananas are refrigerated to between during transport. At lower temperatures, ripening permanently stalls, and turns the bananas gray as cell walls break down. The skin of ripe bananas quickly blackens in the environment of a domestic refrigerator , although the fruit inside remains unaffected.
"Tree-ripened" Cavendish bananas have a greenish-yellow appearance which changes to a brownish-yellow as they ripen further. Although both flavor and texture of tree-ripened bananas is generally regarded as superior to any type of green-picked fruit, this reduces shelf life to only 7–10 days.

Bananas can be ordered by the retailer "ungassed", and may show up at the supermarket fully green. " Guineo Verde", or green bananas that have not been gassed will never fully ripen before becoming rotten. Instead of fresh eating, these bananas are best suited to cooking, as seen in Mexican culinary dishes.

A 2008 study reported that ripe bananas fluoresce when exposed to ultraviolet light. This property is attributed to the degradation of chlorophyll leading to the accumulation of a fluorescent product in the skin of the fruit. The chlorophyll breakdown product is stabilized by a propionate ester group. Banana-plant leaves also fluoresce in the same way. Green bananas do not fluoresce. The study suggested that this allows animals which can see light in the ultraviolet spectrum ( tetrachromat s and pentachromat s) to more easily detect ripened bananas.

Storage and transport

Bananas must be transported over long distances from the tropics to world markets. To obtain maximum shelf life, harvest comes before the fruit is mature. The fruit requires careful handling, rapid transport to ports, cooling, and refrigerated shipping. The goal is to prevent the bananas from producing their natural ripening agent, ethylene. This technology allows storage and transport for 3–4 weeks at . On arrival, bananas are held at about and treated with a low concentration of ethylene. After a few days, the fruit begins to ripen and is distributed for final sale. Unripe bananas can not be held in home refrigerators because they suffer from the cold. Ripe bananas can be held for a few days at home. If bananas are too green, they can be put in a brown paper bag with an apple or tomato overnight to speed up the ripening process. They can be stored indefinitely frozen, then eaten like an ice pop or cooked as a banana mush.

Carbon dioxide (which bananas produce) and ethylene absorbents extend fruit life even at high temperatures. This effect can be exploited by packing banana in a polyethylene bag and including an ethylene absorbent, e.g., potassium permanganate , on an inert carrier. The bag is then sealed with a band or string. This treatment has been shown to more than double lifespans up to 3–4 weeks without the need for refrigeration.

Trade

Top 10 banana producing nations (in million metric tons)
IND*
PHL
CHN
ECU
BRA
IDN
MEX*
CRI
COL
THA
World total
Source: 2009 data, Food and Agriculture Organization of the United Nations * Countries use 2008 FAO data

Bananas and plantains constitute a major staple agriculture|food crop for millions of people in developing country|developing countries . In most tropical countries, green (unripe) bananas used for cooking represent the main cultivars. Bananas are cooked in ways that are similar to potato es. Both can be frying|fried , boiling|boiled , baking|baked , or chipped and have similar taste and texture when served. One banana provides about the same calorie s as one potato.

In 2009, India led the world in banana production, representing approximately 28% of the worldwide crop, mostly for domestic consumption. The six leading exporting countries (Table, right) together accounted for about two-thirds of exports, each contributing more than 6 million tons, according to Food and Agriculture Organization statistics.

Most producers are small-scale farmer s either for home consumption or local markets. Because bananas and plantains produce fruit year-round, they provide an extremely valuable food source during the hunger season (when the food from one annual/semi-annual harvest has been consumed, and the next is still to come). Bananas and plantains are therefore critical to global food security .
Bananas have been an important source of disagreement in the Doha Round of trade talks. A study for ICTSD showed that the new deal on EU banana import tariffs will be a boon to Latin American exporters but would trigger a drop in exports of the fruit from African, Caribbean and Pacific ( ACP ) countries., by Giovanni Anania, July 2009, Issue Paper No.21, ICTSD

Bananas are among the most widely consumed foods in the world. Most banana farmers receive a low price for their produce as grocery companies pay discounted prices for buying in enormous quantity. Price competition among grocers has reduced their margins, leading to lower prices for growers. Chiquita Brands International|Chiquita , Fresh Del Monte Produce|Del Monte , Dole Food Company|Dole , and Fyffes grow their own bananas in Ecuador, Colombia, Costa Rica, Guatemala , and Honduras . Banana plantations are capital intensive and demand significant expertise. The majority of independent growers are large and wealthy landowners in these countries. Producers have attempted to raise prices via marketing them as " fair trade " or Rainforest Alliance -certified in some countries.

The banana has an extensive trade history starting with firms such as Fyffes and the United Fruit Company (now Chiquita) at the end of the 19th century. For much of the 20th century, bananas and coffee dominated the export economies of Central America . In the 1930s, bananas and coffee made up as much as 75% of the region's exports. As late as 1960, the two crops accounted for 67% of the exports from the region. Though the two were grown in similar regions, they tended not to be distributed together. The United Fruit Company based its business almost entirely on the banana trade, because the coffee trade proved too difficult to control. The term " banana republic " has been applied to most countries in Central America , but from a strict economic perspective only Costa Rica, Honduras, and Panama had economies dominated by the banana trade.

The European Union has traditionally imported many of their bananas from former European Caribbean colonies, paying guaranteed prices above global market rates (see Lomé Convention ) As of 2005, these arrangements were in the process of being withdrawn under pressure from other major trading powers, principally the United States . The withdrawal of these indirect subsidies to Caribbean producers is expected to favour the banana producers of Central America, in which American companies have an economic interest.

The United States produces few bananas. A mere were grown in Hawaii in 2001. Bananas were once grown in Florida and southern California.California Rare Fruit Growers, Inc., . Retrieved 2008.12.30.

Pests, diseases, and natural disasters

While in no danger of outright extinction, the most common edible banana cultivar Cavendish (extremely popular in Europe and the Americas) could become unviable for large-scale cultivation in the next 10–20 years. Its predecessor ' Gros Michel ', discovered in the 1820s, suffered this fate. Like almost all bananas, Cavendish lacks genetic diversity, which makes it vulnerable to diseases, threatening both commercial cultivation and small-scale subsistence farming. Some commentators remarked that those variants which could replace what much of the world considers a "typical banana" are so different that most people would not consider them the same fruit, and blame the decline of the banana on monogenetic cultivation driven by short-term commercial motives. Big-business greed killing the banana – Independent , via The New Zealand Herald , Saturday May 24, 2008, Page A19

Panama disease

Panama disease is caused by a fusarium soil fungus (Race 1), which enters the plant s through the root s and travels with water into the trunk and leaves, producing gel s and gums that cut off the flow of water and nutrient s, causing the plant to wilting|wilt , and exposing the rest of the plant to lethal amounts of sunlight. Prior to 1960, almost all commercial banana production centered on " Gros Michel banana|Gros Michel "F, which was highly susceptible.
Barker, C. L. "Conservation: Peeling away". National Geographic Magazine , November 2008. Cavendish was chosen as the replacement for Gros Michel because, among resistant cultivars, it produces the highest quality fruit . However, more care is required for shipping the Cavendish, and its quality compared to Gros Michel is debated.

According to current sources, a deadly form of Panama disease is infecting Cavendish. All plants are genetically identical, which prevents evolution of disease resistance. Researchers are examining hundreds of wild varieties for resistance.

Tropical Race 4

TR4 is a reinvigorated strain of Panama disease first discovered in 1993. This virulent form of fusarium wilt has wiped out Cavendish in several southeast Asian countries. It has yet to reach the Americas; however, soil fungi can easily be carried on boot s, clothing , or tool s. This is how Tropical Race 4 travels and is its most likely route into Latin America. Cavendish is highly susceptible to TR4, and over time, Cavendish is almost certain to disappear from commercial production by this disease. Unfortunately, the only known defense to TR4 is genetic resistance.

Black Sigatoka

Black sigatoka is a fungal leaf spot disease first observed in Fiji in 1963 or 1964. Black Sigatoka (also known as black leaf streak) has spread to banana plantations throughout the tropics from infected banana leaves that were used as packing material. It affects all main cultivars of bananas and plantains, impeding photosynthesis by blackening parts of the leaves, eventually killing the entire leaf. Starved for energy, fruit production falls by 50% or more, and the bananas that do grow ripening|ripen prematurely, making them unsuitable for export . The fungus has shown ever-increasing resistance to treatment, with the current expense for treating exceeding United States dollar|$ 1,000 per year. In addition to the expense, there is the question of how long intensive spraying can be environmentally justified. Several resistant cultivars of banana have been developed, but none has yet received commercial acceptance due to taste and texture issues.

In East Africa

With the arrival of Black sigatoka , banana production in eastern Africa fell by over 40%. For example, during the 1970s, Uganda produced of bananas per hectare. Today, production has fallen to only per hectare.

The situation has started to improve as new disease-resistant cultivars have been developed by the International Institute of Tropical Agriculture and the National Agricultural Research Organisation of Uganda (NARO), such as FHIA-17 (known in Uganda as the Kabana 3 ). These new cultivars taste different from the Cabana banana, which has slowed their acceptance by local farmers. However, by adding mulch and manure to the soil around the base of the plant, these new cultivars have substantially increased yields in the areas where they have been tried.

The International Institute of Tropical Agriculture and NARO, funded by the Rockefeller Foundation and Consultative Group on International Agricultural Research|CGIAR have started trials for genetic engineering|genetically modified bananas that are resistant to both Black sigatoka and banana weevils. It is developing cultivars specifically for smallholder and subsistence farmers.

Banana Bunchy Top Virus (BBTV)

This virus jumps from plant to plant using aphid s. It stunts leaves, resulting in a "bunched" appearance. Generally, an infected plant does not produce fruit, although mild strains exist which allow some production. These mild strains are often mistaken for malnourishment, or a disease other than BBTV. There is no cure; however, its effect can be minimized by planting only plant tissue culture|tissue-cultured plants (in vitro propagation), controlling aphids, and immediately removing and destroying infected plants.

Culture

Food and cooking

Fruit

Bananas are a staple starch for many tropics|tropical populations. Depending upon cultivar and ripeness, the flesh can vary in taste from starchy to sweet, and texture from firm to mushy. Both the skin and inner part can be eaten raw or cooked. The banana's flavor is due, amongst other chemicals, to isoamyl acetate which is one of the main constituents of banana oil .

During the Ripening|ripening process , bananas produce a plant hormone called ethylene , which indirectly affects the flavor. Among other things, ethylene stimulates the formation of amylase , an enzyme that breaks down starch into sugar, influencing the taste of bananas. The greener, less ripe bananas contain higher levels of starch and, consequently, have a "starchier" taste. On the other hand, yellow bananas taste sweeter due to higher sugar concentrations. Furthermore, ethylene signals the production of pectinase , an enzyme which breaks down the pectin between the cells of the banana, causing the banana to soften as it ripens.

Bananas are eaten deep fried, baked in their skin in a split bamboo , or steamed in glutinous rice wrapped in a banana leaf. Bananas can be made into fruit preserves|jam . Banana pancake s are popular amongst Backpacking (travel)|backpacker s and other travelers in South Asia and Southeast Asia . This has elicited the expression Banana Pancake Trail for those places in Asia that cater to this group of travelers. Banana chips are a snack produced from sliced dehydrated or fried banana or plantain, which have a dark brown color and an intense banana taste. Dried bananas are also ground to make banana flour. Extracting juice is difficult, because when a banana is compressed, it simply turns to pulp. Bananas feature prominently in Philippine cuisine , being part of traditional dishes and desserts like Maruya (Filipino cuisine)|maruya , Turrón (Filipino cuisine)|turrón , and halo-halo . Most of these dishes use the Saba Banana|Saba or Cardaba banana cultivar. Pisang goreng , bananas fried with batter similar to the Filipino maruya , is a popular dessert in Malaysia , Singapore , and Indonesia . A similar dish is known in the United States as banana fritters.

Plantains are used in various stews and curries or cooked, baked or mashed in much the same way as potatoes .

Seeded bananas ( Musa balbisiana ), one of the forerunners of the common domesticated banana,
Plant Breeding Abstracts , Commonwealth Agricultural Bureaux, 1949, p. 162 are sold in markets in Indonesia.

Flower

Banana hearts are used as a vegetable in South Asian cuisine|South Asian and Southeast Asian cuisine , either raw or steamed with dips or cooked in soups, curries and fried foods.. Duda Online (December 14, 2009). Retrieved on 2011-10-02. The flavor resembles that of artichoke . As with artichokes, both the fleshy part of the bracts and the heart are edible.

Leaves

image:Nacatamales in steamer.jpg|thumb|left|Nicaraguan Nacatamales, in banana leaves, ready to be steamed

Banana leaf|Banana leaves are large, flexible, and waterproof. They are often used as ecologically friendly disposable food containers or as "plates" in South Asia and several Southeast Asia n countries.
Especially in the South Indian states of Tamil Nadu , Karnataka , Andhra Pradesh and Kerala in every occasion the food must be served in a banana leaf and as a part of the food a banana is served.
Steamed with dishes they impart a subtle sweet flavor. They often serve as a wrapping for grilling food. The leaves contain the juices, protect food from burning and add a subtle flavor. In Tamil Nadu (India) leaves are fully dried and used as packing material for food stuffs and also making cups to hold liquid foods. In Central American countries, banana leaves are often used as wrappers for tamales .

Trunk

The tender core of the banana plant's trunk is also used in South Asian and Southeast Asian cuisine , and notably in the Burma|Burmese dish mohinga .

Nutrition and research

Bananas are an excellent source of Vitamin B6|vitamin B₆ , soluble fiber, and contain moderate amounts of vitamin C , manganese and potassium .

Along with other fruits and vegetables, consumption of bananas may be associated with a reduced risk of colorectal cancer and in women, breast cancer and renal cell carcinoma .

Banana ingestion may affect dopamine production in people deficient in the amino acid tyrosine , a dopamine precursor present in bananas.

In India , juice is extracted from the corm and used as a home remedy for jaundice , sometimes with the addition of honey , and for kidney stone s.
''Healing Power of Foods: Nature's Prescription of Common Diseases , Pustak Mahal, 2004, ISBN 81-223-0748-5, p. 49

Individuals with a latex allergy may experience a reaction to bananas.

Fiber

Textiles

The banana plant has long been a source of fiber for high quality textile s. In Japan , banana cultivation for clothing and household use dates back to at least the 13th century. In the Japanese system, leaves and shoots are cut from the plant periodically to ensure softness. Harvested shoots are first boiled in lye to prepare fibers for yarn -making. These banana shoots produce fibers of varying degrees of softness, yielding yarns and textiles with differing qualities for specific uses. For example, the outermost fibers of the shoots are the coarsest, and are suitable for tablecloth s, while the softest innermost fibers are desirable for kimono and hakama|kamishimo . This traditional Japanese cloth-making process requires many steps, all performed by hand.

In a Nepal ese system the trunk is harvested instead, and small pieces are subjected to a softening process, mechanical fiber extraction, bleaching and drying. After that, the fibers are sent to the Kathmandu Valley for use in Carpet|rug s with a silk -like texture. These banana fiber rugs are woven by traditional Nepalese hand-knotting methods, and are sold rugmark|RugMark certified .

In South Indian state of Tamil Nadu after harvesting for fruit the trunk (outer layer of the shoot) is made into fine thread used in making of flower garland s instead of thread.

Paper

Banana fiber is used in the production of banana paper. Banana paper is used in two different senses: to refer to a paper made from the bark of the banana plant, mainly used for artistic purposes, or paper made from banana fiber, obtained with an industrialized process from the stem and the non-usable fruits. The paper itself can be either hand-made or in industrial processes.

Cultural roles

Arts

The song " Yes& #33; We Have No Bananas " was written by Frank Silver and Irving Cohn and originally released in 1923; for many decades, it was the best-selling sheet music in history. Since then the song has been rerecorded several times and has been particularly popular during banana shortages.

A person slipping on a banana peel has been a staple of physical comedy for generations. A 1910 comedy recording features a popular character of the time, "Uncle Josh", claiming to describe his own such incident:

:

The poet Matsuo Basho|Basho is named after the Japanese word for a banana plant. The "basho" planted in his garden by a grateful student became a source of inspiration to his poetry, as well as a symbol of his life and home.Matsuo Basho: the Master Haiku Poet, Kodansha Europe, ISBN 0-87011-553-7

The Japanese novelist Mihoko Yoshimoto changed her name to Banana Yoshimoto because she liked banana flowers.

The cover artwork for The Velvet Underground & Nico|the debut album of The Velvet Underground features a banana made by Andy Warhol . On the original vinyl LP version, the design allowed the listener to 'peel' this banana to find a pink, peeled banana/phallus on the inside.

Religion

In Burma , bunches of green bananas surrounding a green coconut in a tray form an important part of traditional offerings to the Gautama Buddha|Buddha and the Nat (spirit)|Nat s.

In all the important festivals and occasions of Tamil people|Tamil s the serving of bananas plays a prominent part. The banana ( Tamil language|Tamil : or ) is one of three fruits with this significance, the others being mango and jack fruit .
It is also worth mentioning that ancient Tamils have named three varieties of bananas after Hindu Trinity of Gods Brahma, Vishnu and Shiva as Poovan Pazham- ????? ???? (Brahma), Mondan/Mukundhan Pazham- ???????(????????? ????) Vishnu and Peyan Pazham- ????? ???? (Shiva).

Symbols

Because of its shape the banana is also frequently used as a phallus|phallic symbol . It is also often referred to as the favorite food for monkey s.

Other uses

Banana sap from the pseudostem , peelings or flesh may be sufficiently sticky for adhesive uses.

In regions where bananas are grown, the large leaves may be used as umbrella s when the pseudostems are tied together to form a floatation device.

Banana peel may have capability to extract Heavy metal (chemistry)|heavy metal contamination from river water, similar to other Water purification|purification materials.

Banana peel has displayed antioxidant activity in vitro , especially from unripe extracts.Sundaram S, Anjum S, Dwivedi P, Rai GK.,"Antioxidant activity and protective effect of banana peel against oxidative hemolysis of human erythrocyte at different stages of ripening." Appl Biochem Biotechnol . 2011 Aug;164(7):1192-206

Footnotes

Copyright Citations

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