Origin of banana

Edible bananas originated in the Indo-Malaysian region reaching to northern Australia. They were known only by hearsay in the Mediterranean region in the 3rd Century B.C., and are believed to have been first carried to Europe in the 10th Century A.D. Early in the 16th Century, Portuguese mariners transported the plant from the West African coast to South America. The types found in cultivation in the Pacific have been traced to eastern Indonesia from where they spread to the Marquesas and by stages to Hawaii.
Bananas and plantains are today grown in every humid tropical region and constitute the 4th largest fruit crop of the world, following the grape, citrus fruits and the apple. World production is estimated to be 28 million tons—65% from Latin America, 27 % from Southeast Asia, and 7 % from Africa. One-fifth of the crop is exported to Europe, Canada, the United States and Japan as fresh fruit. India is the leading banana producer in Asia. The crop from 400,000 acres (161,878 ha) is entirely for domestic consumption. Indonesia produces over 2 million tons annually, the Philippines about 1/2 million tons, exporting mostly to Japan. Taiwan raises over 1/2 million tons for export. Tropical Africa (principally the Ivory Coast and Somalia) grows nearly 9 million tons of bananas each year and exports large quantities to Europe.
Brazil is the leading banana grower in South America—about 3 million tons per year, mostly locally consumed, while Colombia and Ecuador are the leading exporters. Venezuela's crop in 1980 reached 983,000 tons. Large scale commercial production for export to North America is concentrated in Honduras (where banana fields may cover 60 sq mi) and Panama, and, to a lesser extent, Costa Rica. In the West Indies, the Windward Islands of Martinique and Guadeloupe are the main growers and for many years have regularly exported to Europe. Green bananas are the basic food of the people of Western Samoa and large quantities are exported.

http://www.hort.purdue.edu/newcrop/morton/banana.html#Origin%20and%20Distribution