Inheritance of resistance to Fusarium root rot in three common bean genotypes
Abstract
103 words
Fusarium solani f. sp phaseoli (FSP) is an important disease
in Uganda causing in some cases 100% yield losses in beans.
The study established the nature of inheritance to FSP resistance
in genotypes RWR 719, NABE 14 and NABE 13. A 5x5 full
diallel design involving three resistant and two susceptible
genotypes was used to develop F1 and F2 populations which
were inoculated with FSP isolate. Crosses, GCA and SCA
values were significant, suggesting importance of both additive
and dominance variances but additive variance was larger. Chisquare
test conformed to 2-3 gene models with dominance/
epistasis and heritability (h2NS) was estimated at 0.77.
Subjects
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