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Estimates of combining ability, reciprocal effects and heterosis for yield and yield components in a common bean diallel cross

Published online by Cambridge University Press:  27 March 2009

M. R. Foolad  and
A. Bassiri
M. R. Foolad
Affiliation:
Department of Agronomy, College of Agriculture, Shiraz University, Shiraz, Iran
A. Bassiri
Affiliation:
Department of Agronomy, College of Agriculture, Shiraz University, Shiraz, Iran
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Summary

A diallel crossing system involving two Pinto and two Kidney common bean (Phaseolus vulgaris L.) cultivars was evaluated in the field. Pin toes were significantly different from the Kidneys in seed yield and numbers of pods and seeds per plant and 100·seed weight. All the traits showed statistical significance among crosses and in comparisons involving parental v. cross means. Heterosis values were large and significant for yield, numbers of pods and seeds per plant, number of seeds per pod and number of days from planting to flowering. The ratio of general to specific combining ability mean squares was low for yield, numbers of pods and seeds per plant and high for 100·seed weight and number of days to flowering. Significant reciprocal effects were found for seed yield and number of seeds per plant, but this effect was completely absent for 100·seed weight.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 100 , Issue 1 , February 1983 , pp. 103 - 108
Copyright
Copyright © Cambridge University Press 1983

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