Indian Society of Genetics & Plant Breeding

GENETIC ARCHITECTURE OF YIELD TRAITS IN ADZUKI BEAN (VIGNA ANGULARIS (WILLD) OHWI & OASHI)

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Genetic components of variance were estimated following triple test cross analysis
involving 22 pure breeding lines derived from an intervarietal cross (A 1 X HPU 51) of
adzuki bean for seed yield, clusters, and pods per plant, pod length, seeds/pod and
biological yield/plant. Epistasis was an integral component of genetic variation for all the
traits studied. Overall epistasis (i type) was a major component in the cases where all the
three types of epistatic interactions were present. Both additive and nonadditive genetic
variances were important for most of the traits. Ambidirectional dominance was operative
for all the traits except for pods and biological yield/plant for which decreasing alleles were
more often dominant than the increasing alleles.
 

Keywords: Triple testcross, Vigna angularis, adzuki bean, yield traits.

Info

Year: 1993
Volume: 53
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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