COMBINING ABILITY ANALYSIS INVOLVING LAND RACES OF GRAIN COWPEA (Vigna unguiculata [L.] Walp.)
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Date
2007-08-31
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University of Agricultural Sciences GKVK, Banglore
Abstract
study was conducted to estimate heterosis, combining ability and gene
action in 12 different traits in cowpea through line x tester analysis involving three
lines and 16 testers. The 48 hybrids along with 19 parents were grown in
randomized complete block design with three replications at Botany Garden, UAS,
Dhaiwad during Khan/'2005.
The analysis of variance showed significant difference among the genotypes
for all the characters, except number of branches and number of seeds per pod,
indicating the presence of considerable genetic variability among parents. The
combining ability analysis revealed that variances were significant for all
characters, except number of main branches for parents and crosses, number of
seeds per pod for parents and pod length for testers. The magnitude of dominant
component was higher than additive component indicating the role of non-additive
gene action.
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