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Detection of components of genetic variation and genotype x environment interaction in spring wheat

Published online by Cambridge University Press:  27 March 2009

S. Singh
S. Singh
Affiliation:
Department of Agricultural Botany, J. V. College, Baraut, India
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Summary

Ninety triple test cross (TTC) families and 32 varieties of spring wheat (used as parents in TTC programme) were raised in three randomized blocks in 1977–8 and 1978–9 to detect additive, dominance and epistatic components of genetic variation and genotype x environment interaction at both micro- and macro-environmental levels for five quantitative traits: final plant height, spike length, number of spikelets per spike, 100-kernel weight and grain yield per plant. Epistasis was an important element for yield per plant in both years. But, absence of significant epistasis was observed for two component traits of yield, namely, spike length and number of spikelets per spike, in these 2 years. Dominance was directional in all cases. Additive gene effects were most sensitive to micro- as well as to macro-environmental differences.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 95 , Issue 1 , August 1980 , pp. 67 - 72
Copyright
Copyright © Cambridge University Press 1980

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References

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