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Regressions, correlations and combining ability of some quantitative characters in peas (Pisum sativum L.)

Published online by Cambridge University Press:  27 March 2009

B. S. Dahiya ,
J. S. Brar  and
R. K. Bajaj
R. K. Bajaj
Affiliation:
Punjab Agricultural University, Ludhiana, India
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Summary

Eight cultivars of peas (Pisum sativum L.) were evaluated for six traits in a diallel experiment using regression coefficients, correlations and combining ability estimates. Regression coefficient was high, indicating large additive effects for 100-grain weight. Yield was significantly and positively correlated with plant height, number of pods per plant and 100-grain weight, indicating that selection for either of these would result in higher yield. The best index of yield among the traits studied was number of pods per plant. Significant general combining ability (GCA) variances and specific combining ability (SCA) variances were observed. GCA variances were larger than SCA variances except for yield, suggesting predominance of additive gene effects.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 88 , Issue 3 , June 1977 , pp. 759 - 763
Copyright
Copyright © Cambridge University Press 1977

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