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Assessing and predicting environmental response in Lolium perenne

Published online by Cambridge University Press:  27 March 2009

C. J. A. Samuel ,
J. Hill ,
E. L. Breese  and
Alison Davies
C. J. A. Samuel
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
J. Hill
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
E. L. Breese
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
Alison Davies
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
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Summary

Recently developed regressional techniques suggest that some of the problems posed by genotype-environment interactions may be solved. These techniques have been applied, therefore, to data from an extensive trial involving perennial ryegrass (Lolium perenne) varieties grown under various treatments at several locations throughout Great Britain. Analysis reveals that the relative performance of the varieties depends mainly upon whether they are grown as spaced plants or swards. Even though the genotype-environment interactions are large, much of their effects could be reduced to an essentially linear scale. These results are considered in the light of the known characteristics of the varieties concerned, whilst the wider implications are also discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 75 , Issue 1 , August 1970 , pp. 1 - 9
Copyright
Copyright © Cambridge University Press 1970

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References

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