Inheritance of resistance to common bacterial blight in four selected common bean (Phaseolus vulgaris L.) genotypes

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dc.contributor.authorAlladassi, Boris M. E.
dc.contributor.authorNkalubo, Stanley T.
dc.contributor.authorMukankusi, Clare
dc.contributor.authorMwale, Eric S.
dc.contributor.authorGibson, Paul
dc.date.accessioned2022-05-26T19:35:42Z
dc.date.available2022-05-26T19:35:42Z
dc.date.issued2017
dc.description.abstractCommon bacterial blight (CBB) is the most serious bacterial disease of common bean in Uganda. It causes severe yield losses of up to 62%. Genetic resistance is the most effective option for controlling CBB in smallholder common bean production systems. This study was carried out to determine the inheritance pattern of CBB resistance in leaf and pod of four new resistance sources. The four resistant and four susceptible genotypes were crossed in a half-diallel mating design. F1 individuals were advanced to F2 and evaluated with the parents, in a randomized complete block design replicated twice. Combining ability analysis was performed according to Griffing's (1956) method IV and model 1 using Genstat 12th. General combining ability effects were significant whereas specific combining ability was not suggesting that resistance to CBB in leaf and pod was primarily controlled by additive genes effects. The estimated narrow sense coefficient of genetic determination was moderately high (0.65) for the resistance in leaf and high (0.83) for resistance in pod suggesting that early-generation selection would be effective. Baker’s ratio estimates were relatively high for resistance in leaf (0.79) and pod (0.9) suggesting that hybrids’ performance can be predicted based on the parents’ general combining ability (GCA) effects.en_US
dc.identifier.citationAlladassi, B. M., Nkalubo, S. T., Mukankusi, C., Mwale, E. S., Gibson, P., Edema, R., ... & Rubaihayo, P. R. (2017). Inheritance of resistance to common bacterial blight in four selected common bean (Phaseolus vulgaris L.) genotypes. Journal of Plant Breeding and Crop Science. DOI: 10.5897/JPBCS2017.0644en_US
dc.identifier.other10.5897/JPBCS2017.0644
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3514
dc.language.isoenen_US
dc.publisherJournal of Plant Breeding and Crop Scienceen_US
dc.subjectXanthomonas axonopodis pven_US
dc.subjectPhaseolien_US
dc.subjectGeneral combining abilityen_US
dc.subjectAdditive gene effectsen_US
dc.subjectCoefficient of genetic determinationen_US
dc.titleInheritance of resistance to common bacterial blight in four selected common bean (Phaseolus vulgaris L.) genotypesen_US
dc.typeArticleen_US
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