Evaluation of banana germplasm and genetic analysis of an F1 population for resistance to Fusarium oxysporum f. sp. cubense race 1

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dc.contributor.authorKabiita Arinaitwe, Ivan
dc.contributor.authorTeo, Chee How
dc.contributor.authorKayat, Fatimah
dc.contributor.authorTumuhimbise, Robooni
dc.contributor.authorUwimana, Brigitte
dc.contributor.authorKubiriba, Jerome
dc.contributor.authorSwennen, Rony
dc.contributor.authorAnn, Jennifer
dc.contributor.authorRofina Yasmin Othman, Harikrishna
dc.date.accessioned2022-05-27T14:32:04Z
dc.date.available2022-05-27T14:32:04Z
dc.date.issued2019
dc.description.abstractFusarium wilt of bananas (Musa spp.), caused by Fusarium oxysporum f. sp. cubense (Foc) causes up to 100% yield loss in bananas. Foc race 1 in particular is very devastating to dessert bananas in Uganda. One of the effective control strategies for the disease is the development of resistant cultivars through breeding. The objectives of this study were to identify suitable banana germplasm for generating a segregating population for resistance to Foc race 1 and understand the mode of inheritance of resistance to Foc race 1. Twenty-two banana accessions sourced from the National Agricultural Research Organisation in Uganda were challenged with Foc race 1 in a screen house experiment. Monyet, resistant to Foc race 1 and Kokopo, susceptible, were selected and crossed to generate 142 F1 genotypes. These F1 genotypes were also challenged with Foc race 1 in a screen house experiment. Data were collected on rhizome discoloration index (RDI), leaf symptom index (LSI) and pseudo-stem splitting (PSS), and analysed for variability. The banana accessions evaluated showed varying degrees of resistance to Foc race 1. Segregation ratios for resistant versus susceptible progenies fitted 13:3 (v2 = 0.12, P = 0.73) for RDI and 11:5 (v2 = 3.04, P = 0.08) for PSS. Estimated broad sense heritability was 27.8% for RDI, 13.9% for LSI and 14.7% for PSS. The results suggest that resistance to Foc race 1 in banana is controlled by at least two dominant genes with epistatic interaction and thaten_US
dc.identifier.citationArinaitwe, I. K., Teo, C. H., Kayat, F., Tumuhimbise, R., Uwimana, B., Kubiriba, J., ... & Othman, R. Y. (2019). Evaluation of banana germplasm and genetic analysis of an F1 population for resistance to Fusarium oxysporum f. sp. cubense race 1. Euphytica, 215(10), 1-11. https://doi.org/10.1007/s10681-019-2493-3(0123456789().,-volV()0123456789().,-volV)en_US
dc.identifier.urihttps://doi.org/10.1007/s10681-019-2493-3(0123456789().,-volV()0123456789().,-volV)
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3580
dc.language.isoenen_US
dc.publisherEuphyticaen_US
dc.subjectMusa spp.en_US
dc.subjectFusarium wilten_US
dc.subjectInheritanceen_US
dc.subjectSegregating populationen_US
dc.subjectDominant genesen_US
dc.subjectFocen_US
dc.titleEvaluation of banana germplasm and genetic analysis of an F1 population for resistance to Fusarium oxysporum f. sp. cubense race 1en_US
dc.typeArticleen_US
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