French mutations threaten plantain production in Latin America

Mutations in plantain crops are causing serious losses for producers across Latin America and the Caribbean. Luis Pocasangre, director of the Tropical Agricultural Research and Higher Education Center (CATIE) in Costa Rica, says growers must understand the risks tied to these genetic changes.

The most common issue is the French mutation, which appears in plants produced through tissue culture. This variant resembles a banana, with bunches of up to 130 smaller, thinner fruits and a larger tip.

French-type fruits cannot be marketed as plantains, which leads to financial losses. In some areas, they are nicknamed “banana hembra” or “postre” due to their sweet taste.

Pocasangre has observed French mutation rates of up to 50% in certain regions, though 7–15% is more common. The mutation rate depends on the lab and its experience with plantain propagation.

Banana propagation tends to produce fewer mutations, which is why inexperienced labs may struggle with plantains. French mutations also appear in plants grown from corms, especially in older fields with more than three production cycles.

In tissue-cultured plants, the problem shows up earlier — sometimes with the first harvest. Pocasangre advises buying tissue-cultured plantain plants — also known as vitroplants, meristems, or young shoots (matitas) — only from laboratories with proven experience in micropropagating plantains, not just bananas. This helps reduce the risk of harmful mutations like the French type.

source: agraria.pe

photo: artisantropic.com