Inheritance of Angular Leaf Spot [Phaeoisariopsis griseola (Sacc.) Ferr] Resistance in Common Bean (Phaseolus vulgaris L.) Population Developed from Kablanketi Mexico 54

dc.contributor.authorTryphone, George Muhamba
dc.contributor.authorChilagane, Luseko Amos
dc.contributor.authorKusolwa, Paul Mbogo
dc.contributor.authorNchimbi-Msolla, Susan
dc.date.accessioned2024-04-15T05:31:44Z
dc.date.available2024-04-15T05:31:44Z
dc.date.issued2012-07-20
dc.descriptionResearch paper
dc.description.abstractThe genetic resistance to angular leaf spot (ALS) caused by Phaeoisariopsis griseola in the common bean cultivar Mexico 54 was investigated on disease reactions in parental, F1, F2 and backcross generations derived from crosses between a resistant cultivar Mexico 54 and a susceptible cultivar Kablanketi under screen house conditions. The heritability (h2) estimate was as high as 0.719 indicating a successful transfer of ALS resistance among progenies and thus selection can be performed in early generation. High heritability coupled with high expected genetic advance of 39.5% is considered to be more useful in predicting the outcome of selecting the best individuals. Chi-square values were computed to determine whether the observed ratios for disease reactions deviated from expected Mendelian ratios for a single, dominant gene controlling resistance to angular leaf spot in common bean. Based on the resistance of the F2, and the backcross generation to the resistant parent, a 3 resistant: 1 susceptible segregation ratio in the F2 and a 1 resistant: 1 susceptible segregation ratio in the backcross generation to the susceptible parent was obtained implying that resistance to the isolate of Phaeoisariopsis griseola is governed by a single, dominant gene.
dc.identifier.citationGeorge Muhamba Tryphone, Luseko Amos Chilagane, Paul Mbogo Kusolwa and Susan Nchimbi-Msolla Department of Crop Science and Production, Faculty of Agriculture, Sokoine University of Agriculture, P.O. Box 3005, Chuo Kikuu, Morogoro, Tanzania
dc.identifier.issn1939-1250
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/6005
dc.language.isoen
dc.publisherJournal of Agricultural Science and Technology
dc.subjectPhaeoisariopsis griseola
dc.subjectheritability
dc.subjectgenetic advance
dc.subjectinheritance
dc.subjectcommon bean
dc.titleInheritance of Angular Leaf Spot [Phaeoisariopsis griseola (Sacc.) Ferr] Resistance in Common Bean (Phaseolus vulgaris L.) Population Developed from Kablanketi Mexico 54
dc.typeArticle

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