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An evaluation of F1 hybrid winter wheat genotypes produced using a chemical hybridizing agent

Published online by Cambridge University Press:  27 March 2009

C. L. Morgan ,
R. B. Austin ,
Margaret A. Ford ,
J. Bingham ,
W. J. Angus  and
S. Chowdhury
C. L. Morgan
Affiliation:
Institute of Plant Science Research, Cambridge Laboratory, Trumpington, Cambridge CB2 2JB
R. B. Austin
Affiliation:
Institute of Plant Science Research, Cambridge Laboratory, Trumpington, Cambridge CB2 2JB
Margaret A. Ford
Affiliation:
Institute of Plant Science Research, Cambridge Laboratory, Trumpington, Cambridge CB2 2JB
J. Bingham
Affiliation:
Plant Breeding International, Trumpington, Cambridge CB2 2LQ
W. J. Angus
Affiliation:
Joseph Nickerson Research Centre, Rothwell, Lincoln LN7 6DP
S. Chowdhury
Affiliation:
Indian Agricultural Research Institute, New Delhi 110012, India
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Summary

In experiments harvested in 1985 and 1986 the grain yields of 61 F1 hybrids among winter wheat varieties and advanced breeding lines were 5·9% greater than the yields of the best parents. In a trial with 430 hybrids in 1986, the hybrids yielded 3·6% more grain than the best parents. Among these 430 hybrids heterosis for yield was greatest for those from the lowest yielding parents. This result is taken to indicate that among these genotypes most genes for high yield have been fixed in the highest yielding parents.

The hybrids had slightly fewer ears/m2, but more grains per ear and heavier grains than the highest yielding parents. They yielded more straw as well as more grain.

The results are compared with those from other studies and it is concluded that yield advantage of F1 hybrids so far tested is not generally sufficient to justify their introduction into U.K. agriculture.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 112 , Issue 2 , April 1989 , pp. 143 - 149
Copyright
Copyright © Cambridge University Press 1989

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