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MANGIFERA INDICA - Mango, Mangot, Manga, Mangou |
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A handsome evergreen tree, widely grown in the drier tropics and subtropical U.S. for its superb and often very colorful fruit (the peach of the tropics) The shape of the tree varies from upright and tall, to round, or to a broad base and conical top. It should be pruned to maintain size and shape. The round to oblong fruit has green, yellow, red or purple skin that is fairly thick and leathery and dotted with glands. It contains a caustic sap which can cause irritation to eyes and skin and care should be taken when it is picked. The yellow flesh varies in thickness, texture and flavor from soft, fiber-free, sweet and juicy to fibrous and turpentine-flavored. It is rich in vitamin A and contains quantities of B and C. Propagated by fresh (do not allow seed to dry out), polyembryonic seed or grafting.
Related species: Bindjai (Mangifera caesia), Horse Mango (M. foetida), Kuweni mango (M. odorata).
Distant affinity: Cashew (Anacardium occidentale), Gandaria (Bouea gandaria), Pistachio (Pistacia vera), Marula (Sclerocarya birrea), Ambarella (Spondias cytherea), Yellow Mombin (Spondias mombin), Red Mombin (Spondias purpurea), Imbu (Spondias tuberosa).
Origin: The mango is native to southern Asia, especially Burma and eastern India. It spread early on to Malaya, eastern Asia and eastern Africa. Mangos were introduced to California (Santa Barbara) in 1880.
Forms: The mango exists in two races, one from India and the other from the Philippines and Southeast Asia. The Indian race is intolerant of humidity, has flushes of bright red new growth that are subject to mildew, and bears monoembryonic fruit of high color and regular form. The Philippine race tolerates excess moisture, has pale green or red new growth and resists mildew. Its polyembryonic fruit is pale green and elongated kidney-shaped. Philippines types from Mexico have proven to be the hardiest mangos in California.
Adaptation: Mangos basically require a frost-free climate. Flowers and small fruit can be killed if temperatures drop below 40 degrees F, even for a short period. Young trees may be seriously damaged if the temperature drops below 30 degrees F, but mature trees may withstand very short periods of temperatures as low as 25 degrees F. The mango must have warm, dry weather to set fruit. In southern California the best locations are in the foothills, away from immediate marine influence. It is worth a trial in the warmest cove locations in the California Central Valley, but is more speculative in the coastal counties north of Santa Barbara, where only the most cold adapted varieties are likely to succeed. Mangos luxuriate in summer heat and resent cool summer fog. Wet, humid weather favors anthracnose and poor fruit set. Dwarf cultivars are suitable for culture in large containers or in a greenhouse.
DESCRIPTION
Growth Habit: Mango trees make handsome landscape specimens and shade trees. They are erect and fast growing with sufficient heat, and the canopy can be broad and rounded, or more upright, with a relatively slender crown. It is ultimately a large tree, to 65 ft., but usually half that size in California. The tree is long-lived with some specimens known to be over 300 years old and still fruiting. In deep soil the taproot descends to a depth of 20 ft, and the profuse, wide-spreading feeder roots also send down many anchor roots which penetrate for several feet.
Foliage: The leaves are dark green above and pale below, usually red while young. The midrib is pale and conspicuous and the many horizontal veins distinct. Full-grown leaves may be 4 to 12-1/2 in. long and 3/4 to 2 in. wide, and are generally borne in clusters separated by a length of naked stem bearing no buds. These naked stems mark successive flushes of growth. Each flush of growth will harden off to a rich green color before the next flush of growth begins.
Flowers: The yellowish or reddish flowers are borne in inflorescences which appear at branch terminals, in dense panicles of up to 2000 minute flowers. These flowers respire a volatile substance, causing allergic and respiratory problems for some persons. Pollinators are flies, hoverflies, rarely bees. Few of the flowers in each inflorescence are perfect, so most do not produce pollen and are incapable of producing fruit. Pollen cannot be shed in high humidity or rain. Fertilization is also ineffective when night temperatures are below 55 degrees F. Mangos are monoecious and self-fertile, so a single tree will produce fruit without cross pollination. Polyembryonic types may not require pollination at all. Branches may be ringed to induce flowering, but the results are mixed.
Fruits: The fruits grow at the end of a long, stringlike stem (the former panicle), with sometimes two or more fruits to a stem. The fruits are 2 to 9 inches long and may be kidney shaped, ovate or (rarely) round. They range in size from 8 ounces to around 24 ounces. The flower scar at the apex is prominent, in some cultivars bulging from the fruit. The leathery skin is waxy and smooth, and when ripe entirely pale green or yellow marked with red, according to cultivar. It is inedible and contains a sap that is irritating to some people. The quality of the fruit is based on the scarcity of fiber and minimal turpentine taste.
The flesh of a mango is peachlike and juicy, with more or less numerous fibers radiating from the husk of the single large kidney-shaped seed. Fibers are more pronounced in fruits grown with hard water and chemical fertilizers. The flavor is pleasant and rich and high in sugars and acid. The seed may either have a single embryo, producing one seedling, or polyembryonic, producing several seedlings that are identical but not always true to the parent type. It is impossible to distinguish true-to-type from zygotic seedlings from the same fruit. Some seedlings produce numerous tiny, parthenocarpic fruits which fail to develop and abort. Mango trees tend to be alternate bearing.
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