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Diallel analysis of yield and yield components of winged bean (Psophocarpus tetragonolobus (L.) D.C.)

Published online by Cambridge University Press:  27 March 2009

H. N. De Silva  and
A. Omran
H. N. De Silva
Affiliation:
The Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka
A. Omran
Affiliation:
The Post Graduate Institute of Agriculture, Peradeniya, Sri Lanka
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Summary

The variability revealed in a half-diallel cross between nine diverse genotypes of winged bean (Psophocarpus tetragonolobus (L.) D.C.) in regard to yield and yield components was studied in the F1 generation. The results indicated that high genetic variability existed for all traits. With respect to seed size, general combining ability effects alone were adequate to predict the performance of hybrids. For numbers of pods per plant and seeds per pod, both general and specific combining ability effects were of equal importance, while the performance of hybrids for grain yield was mainly dependent on specific combining ability effects. Heterosis was clearly evident for number of seeds per pod and grain yield. Of the yield components, number of pods per plant exhibited a positive genotypic association of appreciable magnitude with grain yield, showing its usefulness as an indicator of yield in selection.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 106 , Issue 3 , June 1986 , pp. 485 - 490
Copyright
Copyright © Cambridge University Press 1986

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