HETEROSIS FOR SEED YIELD AND ITS COMPONENT CHARACTERS IN PIGEONPEA [Cajanus cajan L. Millsp.]
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 60
Abstract
The heterosis study for seed yield and its attributes was carried out in pigeonpea [Cajanus cajan L. Millsp.] through line × tester mating design in four different seasons. Highly significant mean squares differences among all the four environments for all the characters were exhibited by the pooled analysis of variance. The variance due to hybrids, lines, testers and line × tester interactions were also significant for most of the characters studied demonstrating the presence of significant variability among the material used in the study and presence of overall heterosis for all the characters. The magnitude of heterobeltiosis and standard heterosis altered for all the crosses and for all the characters studied. In general, it is inferred that magnitudes of heterotic effects were high for seed yield per plant, pod clusters per plant, pods per plant, 100-seed weight and protein content. Expressing moderate heterotic effects for days to flowering, days to maturity, seeds per pod and pod length and low for plant height. The hybrids GT 610 A× GTR 84, GT 603 A × GTR 81 and GT 610 A × GTR 82 exhibited the highest, significant and positive heterotic effect and mean performance for seed yield per plant and some of its important component traits. This could be exploited commercially for heterosis breeding in pigeonpea.
Authors and Affiliations
N. K. PAGI
Keywords
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