Musaceae

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Banana

Published April 5, 2012 by myberriesfarm
bananas

bananas (Photo credit: Fernando Stankuns)

bananas (Photo credit: Fernando Stankuns)

Solmaz Hafezi is banana’s for bananas!

Banana is the common name for herbaceous plants of the genus Musa and for the fruit they produce. Bananas come in a variety of sizes and colors when ripe, including yellow, purple, and red.

Almost all modern edible parthenocarpic bananas come from the two wild species – Musa acuminata and Musa balbisiana. The 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 Enset and Fe’i bananas, neither of which belong to the aforementioned species. Enset bananas belong to the genus Ensete while the taxonomy of Fe’i-type cultivars is uncertain.

In popular culture and commerce, “banana” usually refers to soft, sweet “dessert” bananas. By contrast, Musa cultivars with firmer, starchier fruit are called plantains or “cooking bananas”. The distinction is purely arbitrary and the terms ‘plantain’ and ‘banana’ are sometimes interchangeable depending on their usage.

They are native to tropical South and Southeast Asia, and are likely to have been first domesticated in Papua New Guinea. Today, they are cultivated throughout the tropics. 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 plants.

Banana tree (Musa x paradisiaca) male inflores...

Banana tree (Musa x paradisiaca) male inflorescence Français : Inflorescence mâle (popote) de bananier (Musa x paradisiaca). (Photo credit: Wikipedia)

Image via Wikipedia

The banana plant is the largest herbaceous flowering plant. The plants are normally tall and fairly sturdy and are often mistaken for trees, but their main or upright stem is actually a pseudostem that grows 6 to 7.6 metres (20 to 24.9 ft) 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 2.7 metres (8.9 ft) long and 60 cm (2.0 ft) wide. They are easily torn by the wind, resulting in the familiar frond look.

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 bracts (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 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 tiers, or commercially as a “banana stem”, and can weigh from 30–50 kilograms (66–110 lb). In common usage, bunch applies to part of a tier containing 3–10 adjacent fruits.

Banana, Plantan සිංහල: කෙසෙල්

Banana, Plantan සිංහල: කෙසෙල් (Photo credit: Wikipedia)

Image via Wikipedia

Individual banana fruits (commonly known as a banana or ‘finger’) average 125 grams (0.28 lb), of which approximately 75% is water and 25% dry matter. There is a protective outer layer (a peel or skin) with numerous long, thin strings (the phloem bundles), which run lengthwise between the skin and the 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 carpels.

The fruit has been described as a “leathery berry”. 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, 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. Proponents of nuclear power sometimes refer to the banana equivalent dose of radiation to support their arguments.

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 commelinids in the monocotyledonous flowering plants. Some sources assert that the banana’s genus, Musa, is named for Antonio Musa, physician to the Emperor Augustus. Others say that Linnaeus, who named the genus in 1750, simply adapted an Arabic word for banana, mauz. The word banana itself might have come from the Arabic banan, which means “finger”, or perhaps from Wolof 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 plantains. However, this simplistic classification has proved to be inadequate to address the sheer number of cultivars (many of them 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 cultivars 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.

Photo of four varieties of bananas.

Photo of four varieties of bananas. (Photo credit: Wikipedia)

Photo by Solmaz Hafezi

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 accepted names for bananas are Musa acuminata, Musa balbisiana or Musa acuminata × balbisiana, depending on their genetic ancestry.

Southeast Asian farmers first domesticated bananas. Recent 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 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 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 colonization of the island from South East Asia c. 400 CE.

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 the prophet 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 hadiths) 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 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.

Misahuallí - Wild Pink BananasMisahuallí – Wild Pink Bananas (Photo credit: Drriss)

Bananas were introduced to the Americas by 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 wild banana species as well as cultivars exist in extraordinary diversity in New Guinea, Malaysia, Indonesia, China, and the Philippines.

There are fuzzy bananas whose skins are bubblegum pink; green-and-white striped bananas with pulp the color of orange sherbet; bananas that, when cooked, taste like strawberries. The Double Mahoi plant can produce two bunches at once. The Chinese name of the aromatic Go San Heong banana means ‘You can smell it from the next mountain.’ The fingers on one banana plant grow fused; another produces bunches of a thousand fingers, each only an inch long. —Mike Peed, The New Yorker