PLANTAIN BREEDING AT CRBP : STRATEGIES, RESULTS AND OUTLOOK
Plantain breeding started in 1992 at the CRBP aiming to develop black sigatoka resistant plantain tetraploid hybrids by crossing plantain (AAB) with black sigatoka resistant diploid bananas (AA). Calcutta 4 and M53 are the most popular diploid parents. Calcutta 4 is non-parthenocarpic and highly resistant to black sigatoka. M53 is a parthenocarpic hybrid, which was bred by Musa breeders in Jamaica, and shows partial resistant to black sigatoka. Forty-six triploid plantain cultivars set seed (0 to 183 seeds per bunch) after hybridization with pollen of diploid bananas. The seed set depends on cultivars, period of pollination and pollen source. Three-hundred hybrids rescued by embryo culture are undergoing preliminary evaluation under high pressure of black sigatoka. These hybrids show distinct ploidy levels: diploids, tetraploids, triploids and heptaploids. About 30% of hybrids were aneuploids. Eight black sigatoka resistant tetraploid hybrids have already been selected through two cycles of preliminary evaluation. These hybrids are generally shorter and more vigorous than their female plantain parents.They exhibit a strong ratooning and early flowering but their fruit filling time is longer, and produce larger bunch than plantain in high pressure of black sigatoka. Unlike plantain cultivars, these hybrids are male- and female-fertile. Four of them are currently under clonal evaluation.
Tomekpé, K., Auboiron, E., Noupadja, P. and Fouré, E. (2000). PLANTAIN BREEDING AT CRBP : STRATEGIES, RESULTS AND OUTLOOK. Acta Hortic. 540, 177-183
Musa ssp., Mycosphaerella fijiensis, black sigatoka, embryo rescue, hybrid.