What is Panama disease?

Fusarium wilt, also known as Panama disease, is a destructive soil-borne fungal disease that severely affects banana crops worldwide, especially the widely cultivated Cavendish variety.

• Caused by virulent Race-4 strains of the fungus
• Leads to wilting and eventual death of banana plants
• Pathogen persists in soil, infecting future crops

Because most exported bananas are of a single variety, Cavendish, low genetic diversity makes plantations highly vulnerable.

Major Scientific Breakthrough

Researchers Andrew Chen and Elizabeth Aitken from The University of Queensland have identified a genomic region responsible for resistance to Fusarium wilt Sub-Tropical Race 4 (STR4).

Key findings:

• Resistance traced to Calcutta 4, a fertile wild diploid banana
• Scientists crossed it with susceptible banana varieties
• This discovery may help develop resistant commercial banana cultivars

This breakthrough offers hope for protecting global banana production.

Understanding Diploid Bananas

Diploid organisms contain two complete sets of chromosomes (one from each parent).
Wild diploid bananas like Calcutta 4 are valuable genetic resources for breeding disease-resistant varieties.

Banana Cultivation in India

Banana (Musa sp.) is the second most important fruit crop in India after mango.

• India is one of the centres of origin of bananas
• Modern edible varieties evolved from
  • Musa acuminata
  • Musa balbisiana
• India is the world’s largest banana producer

Bananas are rich in carbohydrates and vitamins, especially Vitamin-B.

Source: DTE