Musa acuminata | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Zingiberales |
Family: | Musaceae |
Genus: | Musa |
Section: | Musa sect. Musa |
Species: | M. acuminata |
Binomial name | |
Musa acuminata | |
Subspecies | |
See § Subspecies | |
Original native ranges of the ancestors of modern edible bananas. [3] Contents | |
Synonyms [4] | |
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Musa acuminata is a species of banana native to Southern Asia, its range comprising the Indian Subcontinent and Southeast Asia. Many of the modern edible dessert bananas are from this species, although some are hybrids with Musa balbisiana . [5] First cultivated by humans around 8000 BCE, [6] [7] it is one of the early examples of domesticated plants.
Musa acuminata is classified by botanists as an herbaceous plant and an evergreen and a perennial, but not as a tree. The trunk (known as the pseudostem) is made of tightly packed layers of leaf sheaths emerging from completely or partially buried corms. [8] The leaves are at the top of the leaf sheaths, or petioles and in the subspecies M. a. truncata the blade or lamina is up to 22 feet (6.7 m) in length and 39 inches (0.99 m) wide.
The inflorescence grows horizontally or obliquely from the trunk. The individual flowers are white to yellowish-white in color and are negatively geotropic (that is, growing upwards and away from the ground). [8] [9] Both male and female flowers are present in a single inflorescence. Female flowers are located near the base (and develop into fruit), and the male flowers located at the tipmost top-shaped bud in between leathery bracts. [8]
The rather slender fruits are berries, the size of each depends on the number of seeds they contain. Each fruit can have 15 to 62 seeds. [10] Each fruit bunch can have an average of 161.76 ± 60.62 fingers with each finger around 2.4 by 9 cm (1 by 3+1⁄2 in) in size. [11]
The seeds of wild M. acuminata are around 5 to 6 mm (3⁄16 to 1⁄4 in) in diameter. [8] They are subglobose or angular in shape and very hard. The tiny embryo is located at the end of the micropyle. [10] Each seed of M. acuminata typically produces around four times its size in edible starchy pulp (the parenchyma, the portion of the bananas eaten), around 0.23 cm3 (230 mm3; 0.014 cu in). [8] [12] Wild M. acuminata is diploid with 2n=2x=22 chromosomes, while cultivated varieties (cultivars) are mostly triploid (2n=3x=33) and parthenocarpic, meaning producing fruit without seeds. The most familiar dessert banana cultivars belong to the Cavendish subgroup. These high yielding cultivars were produced through selection of the natural mutations resulting from the normal vegetative propagation of banana farming. [13] The ratio of pulp to seeds increases dramatically in "seedless" edible cultivars: the small and largely sterile seeds are now surrounded by 23 times their size in edible pulp. [12] The seeds themselves are reduced to tiny black specks along the central axis of the fruit. [8]
Musa acuminata belongs to section Musa (formerly Eumusa) of the genus Musa. It belongs to the Family Musaceae of the Order Zingiberales. [4] It is divided into several subspecies (see § Subspecies section below). [14]
M. acuminata was first described by the Italian botanist Luigi Aloysius Colla in the book Memorie della Reale Accademia delle Scienze di Torino (1820). [2] [15] Although other authorities have published various names for this species and its hybrids mistaken for different species (notably Musa sapientum by Linnaeus which is now known to be a hybrid of M. acuminata and Musa balbisiana ), Colla's publication is the oldest name for the species and thus has precedence over the others from the rules of the International Code of Botanical Nomenclature. [16] Colla also was the first authority to recognize that both Musa acuminata and Musa balbisiana were wild ancestral species, even though the specimen he described was a naturally occurring seedless polyploid like cultivated bananas. [15]
Musa acuminata is highly variable and the number of subspecies accepted can vary from six to nine between different authorities. The following are the most commonly accepted subspecies: [14]
Musa acuminata is native to the biogeographical region of Malesia and most of mainland Indochina. [14]
M. acuminata favors wet tropical climates in contrast to the hardier M. balbisiana , the species it hybridized extensively with to provide almost all modern cultivars of edible bananas. [18] Subsequent spread of the species outside of its native region is thought to be purely the result of human intervention. [19] Early farmers introduced M. acuminata into the native range of M. balbisiana resulting in hybridization and the development of modern edible clones. [20]
AAB cultivars were spread from somewhere around the Philippines about 4 kya (2000 BCE) and resulted in the distinct banana cultivars known as the Maia Maoli or Popoulo group bananas in the Pacific islands. They may have been introduced as well to South America during Precolumbian times from contact with early Polynesian sailors, although evidence of this is debatable. [19]
Westward spread included Africa which already had evidence of M. acuminata × M. balbisiana hybrid cultivation from as early as 1000 to 400 BCE. [19] They were probably introduced first to Madagascar from Indonesia. [20]
From West Africa, they were introduced to the Canary islands by the Portuguese in the 16th century, and from there were introduced to Hispaniola (modern Haiti and the Dominican Republic) in 1516. [20]
Wild Musa acuminata is propagated sexually by seeds or asexually by suckers. Edible parthenocarpic cultivars are usually cultivated by suckers in plantations or cloned by tissue culture. [21] Seeds are also still used in research for developing new cultivars. [10]
M. acuminata is a pioneer species. It rapidly exploits newly disturbed areas, like areas recently subjected to forest fires. It is also considered a 'keystone species' in certain ecosystems, paving the way for greater wildlife diversity once they have established themselves in an area. It is particularly important as a food source for wildlife due to its rapid regeneration. [11]
M. acuminata bears flowers that by their very structure, makes it difficult to self-pollinate. It takes about four months for the flowers to develop into fruits, with the fruit clusters at the bases ripening sooner than those at the tip. [11]
A large variety of wildlife feeds on the fruits. These include frugivorous bats, birds, squirrels, tree shrews, civets, rats, mice, monkeys, and apes. [11] These animals are also important for seed dispersal. [22]
Mature seeds germinate readily 2 to 3 weeks after sowing. [21] Unsprouted, they can remain viable from a few months to two years of storage. [10] Nevertheless, studies show that clone plantlets are much more likely to survive than seedlings germinated from seeds. [11]
In 1955, Norman Simmonds and Ken Shepherd revised the classification of modern edible bananas based on their genetic origins. Their classification depends on how many of the characteristics of the two ancestral species (Musa acuminata and Musa balbisiana) are exhibited by the cultivars. [16] Most banana cultivars which exhibit purely or mostly Musa acuminata genomes are dessert bananas, while hybrids of M. acuminata and M. balbisiana are mostly cooking bananas or plantains. [23]
Musa acuminata is one of the earliest plants to be domesticated by humans for agriculture, 7,000 years ago in New Guinea and Wallacea. [24] It has been suggested that M. acuminata may have originally been domesticated for parts other than the fruit. Either for fiber, for construction materials, or for its edible male bud. [25] They were selected early for parthenocarpy and seed sterility in their fruits, a process that might have taken thousands of years. This initially led to the first 'human-edible' banana diploid clones (modern AA cultivars). Diploid clones are still able to produce viable seeds when pollinated by wild species. This resulted in the development of triploid clones which were conserved for their larger fruit. [26]
M. acuminata was later introduced into mainland Indochina into the range of another ancestral wild banana species – Musa balbisiana , a hardier species of lesser genetic diversity than M. acuminata. Hybridization between the two resulted in drought-resistant edible cultivars. Modern edible banana and plantain cultivars are derived from permutations of hybridization and polyploidy of the two. [26]
M. acuminata is one of several banana species cultivated as an ornamental plant, for its striking shape and foliage. In temperate regions it requires protection in winter, as it does not tolerate temperatures below 10 °C (50 °F). The cultivar M. acuminata 'Dwarf Cavendish' (AAA Group) has gained the Royal Horticultural Society's Award of Garden Merit. [27] [28]
D'Hont et al., 2012 finds 3 whole genome duplications in the evolutionary history of this species. [29] Their analysis is consistent with timing in the evolution of the genus, prior to M. acuminata's speciation. [29]
A banana is an elongated, edible fruit – botanically a berry – produced by several kinds of large herbaceous flowering plants in the genus Musa. In some countries, cooking bananas are called plantains, distinguishing them from dessert bananas. The fruit is variable in size, color and firmness, but is usually elongated and curved, with soft flesh rich in starch covered with a peel, which may have a variety of colors when ripe. It grows upward in clusters near the top of the plant. Almost all modern edible seedless (parthenocarp) cultivated bananas come from two wild species – Musa acuminata and Musa balbisiana, or hybrids of them.
The blood banana, is a variety of the wild banana Musa acuminata native to Sumatra, Indonesia. The blood banana is an ornamental plant, named for the dark red patches on its leaves, though its small-seeded fruits are also edible. It grows 6' to 8' tall in the wild, but is well-adapted to container growing and can be maintained at 3' to 5'. It grows best in full or partial sun and is hardy in zones 9 - 11.
Musa is one of three genera in the family Musaceae. The genus includes 83 species of flowering plants producing edible bananas and plantains. Though they grow as high as trees, banana and plantain plants are not woody and their apparent "stem" is made up of the bases of the huge leaf stalks. Thus, they are technically gigantic herbaceous plants.
The Goldfinger banana (FHIA-01) is a banana cultivar developed in Honduras. The cultivar, developed at the Honduran Foundation for Agricultural Research (FHIA) by a team of scientists led by Phillip Rowe and Franklin Rosales, has been bred to be pest-resistant and crop-yielding.
Musa balbisiana, also known simply as plantain, is a wild-type species of banana. It is one of the ancestors of modern cultivated bananas, along with Musa acuminata.
The Grand Nain banana is a banana cultivar of Musa acuminata. It is one of the most commonly cultivated bananas and a member of the commercial Cavendish banana cultivar group. It is also known as the Chiquita banana because it is the main product of Chiquita Brands International.
Rhino Horn bananas, also called Rhino Horn plantains or African Rhino Horn, are hybrid banana cultivars from Africa. It produces strongly curved and elongated edible bananas which can grow to a length of two feet, the longest fruits among banana cultivars.
Musa maclayi is a species of seeded banana native to Papua New Guinea and the Solomon Islands. It is placed in section Callimusa. It is regarded as one of the progenitors of the Fe'i banana cultivars.
The Blue Java is a hardy, cold-tolerant banana cultivar known for its sweet aromatic fruit, which is said to have an ice cream-like consistency and flavor reminiscent of vanilla. It is native to Southeast Asia and is a hybrid of two species of banana native to Southeast Asia—Musa balbisiana and Musa acuminata.
Saba banana is a triploid hybrid (ABB) banana cultivar originating from the Philippines. It is primarily a cooking banana, though it can also be eaten raw. It is one of the most important banana varieties in Philippine cuisine. It is also sometimes known as the "cardaba banana", though the latter name is more correctly applied to the cardava, a very similar cultivar also classified within the saba subgroup.
Fe'i bananas are cultivated plants in the genus Musa, used mainly for their fruit. They are very distinct in appearance and origin from the majority of bananas and plantains currently grown. Found mainly in the islands of the Pacific, particularly French Polynesia, Fe'i bananas have skins which are brilliant orange to red in colour with yellow or orange flesh inside. They are usually eaten cooked and have been an important food for Pacific Islanders, moving with them as they migrated across the ocean. Most are high in beta-carotene.
Lady finger bananas are diploid banana cultivars originating in Malaysia or Indonesia, belonging to the Sucrier subgroup of the AA banana cultivar group. Lady finger bananas are the most widely cultivated AA cultivar and are one of the world’s most popular local bananas. Its fruits are finger-sized, sweet, and thin-skinned.
The Latundan banana is a triploid hybrid banana cultivar of the AAB "Pome" group from the Philippines. It is one of the most common banana cultivars in Southeast Asia and the Philippines, along with Lacatan and Saba bananas. Its Malaysian name is pisang rastali.
Señorita bananas are diploid cultivars of the banana Musa acuminata originating in the Philippines. They are very small stout bananas which, like all bananas belonging to the AA cultivar group, are known for being extraordinarily sweet.
Matoke, locally also known as matooke, amatooke in Buganda, ekitookye in southwestern Uganda, ekitooke in western Uganda, kamatore in Lugisu, ebitooke in northwestern Tanzania, igitoki in Rwanda, Burundi and by the cultivar name East African Highland banana, are a group of starchy triploid banana cultivars, originating from the African Great Lakes. The fruit is harvested green, carefully peeled, and then cooked and often mashed or pounded into a meal. In Uganda and Rwanda, the fruit is steam-cooked, and the mashed meal is considered a national dish in both countries.
Ernest Entwistle Cheesman, was an English botanist noted for his work on the family Musaceae. He was the son of Charles Cheesman and Grace Lizzie Davies. About August 1936 he married Ellen Elizabeth B. Weston (1892-1966).
Musa × paradisiaca is a species as well as a cultivar, originating as the hybrid between Musa acuminata and Musa balbisiana, cultivated and domesticated by human very early. Most cultivated bananas and plantains are polyploid cultivars either of this hybrid or of M. acuminata alone. Linnaeus originally used the name M. paradisiaca only for plantains or cooking bananas, but the modern usage includes hybrid cultivars used both for cooking and as dessert bananas. Linnaeus's name for dessert bananas, Musa sapientum, is thus a synonym of Musa × paradisiaca.
Masak Hijau bananas are triploid banana cultivars from Malaysia. It is a member of the commercially important Cavendish banana subgroup. It is a popular banana cultivar in Southeast Asia and the West Indies.
Cardava bananas, also spelled cardaba or kardaba, is a triploid hybrid (ABB) banana cultivar originating from the Philippines. It is primarily a cooking banana, though it can also be eaten raw. It is commonly confused with the more ubiquitous and closely related saba banana because they are used identically in traditional Filipino cuisine. Their common names can be interchanged in everyday usage though they are different cultivars.
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