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Genotype (G), Environment (E) and GE Components of Crop Yields

Published online by Cambridge University Press:  03 October 2008

N. W. Simmonds
N. W. Simmonds
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG, Scotland
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Summary

Genotype-environment (GE) interactions as a component of historically rising crop yields are reviewed. For various cereals (both temperate and tropical), past selection has seemingly evoked responsive varieties, and GE effects constitute about one third of the total estimated yield increase due to G + E + GE. In potatoes and sugarcanes, more stable (less responsive) varieties, less dependent upon good environments to do well, have been prominent. Historically, responses have been largely due to unconscious selection, but GE effects could be deliberately manipulated by breeding if it were desirable to do so, for example, to produce varieties adapted to low-input agriculture (already an object of breeding research in a few crops).

Type
Research Article
Information
Experimental Agriculture , Volume 17 , Issue 4 , October 1981 , pp. 355 - 362
Copyright
Copyright © Cambridge University Press 1981

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