Banana plantation
Banana plants may grow with varying degrees of success in diverse climatic conditions, but commercial banana plantations are primarily found in equatorial regions, in banana exporting countries. The four leading banana export countries worldwide are Ecuador, Costa Rica, Philippines, and Colombia. Ecuador provides more than 33% of global banana exports. In 2004, banana producing countries totaled 130. Production, as well as exports and imports of bananas, are nonetheless concentrated in a few equatorial countries. 75% of total banana production in 2004 was generated in 10 counties. India, Ecuador, Brazil and China produced half of total bananas. Latin American and Caribbean countries led banana production up to the 1980s, and Asian nations took the lead in banana production during the 1990s. African production levels have remained mostly unchanged.
Banana
In global commerce in 2009, by far the most important cultivars belonged to the triploid AAA group of "Musa acuminata", commonly referred to as Cavendish group bananas. They accounted for the majority of banana exports, despite only coming into existence in 1836. The cultivars Dwarf Cavendish and Grand Nain (Chiquita Banana) gained popularity in the 1950s after the previous mass-produced cultivar, Gros Michel (also an AAA group cultivar), became commercially unviable due to Panama disease, caused by the fungus "Fusarium oxysporum" which attacks the roots of the banana plant. Cavendish cultivars are resistant to the Panama disease, but in 2013 there were fears that the black sigatoka fungus would in turn make Cavendish bananas unviable.