Welcome to the International Institute of Tropical Agriculture Research Repository
What would you like to view today?
Host response to black sigatoka in Musa germplasm of different ages under natural inoculation conditions
MetadataShow full item record
The development of an early evaluation method for host response of different Musa clones to black sigatoka was investigated under natural inoculation conditions in southeastern Nigeria. Two months old tissue-culture-derived plants of three plantain hybrids and parents of the hybrids were exposed to the natural inoculum of Mycosphaerella fijiensis in a field planted with a susceptible plantain cultivar. The response to M. fijiensis was evaluated on these young plants and on the same clones of mature, field-established plants. Young plants expressed similar resistance responses as mature plants and allowed an earlier evaluation of host-plant response to M. fijiensis. The male diploid banana parent, ‘Calcutta 4', was highly resistant to black sigatoka. The three hybrids displayed partial resistance before flowering while the female parent, a triploid plantain, was susceptible. Disease responses of both mature and young plants ranked in the same order and were highly correlated (P = 0.01). Young-plant response to black sigatoka in Musa germplasm was shown to be a reliable indicator of mature-plant response and a quick means of disease reaction assessment. This could accelerate progress made by breeding programs when producing new black sigatoka-resistant germplasm.
Multi standard citation
Permanent link to this itemhttps://hdl.handle.net/20.500.12478/5038
Digital Object Identifier (DOI)