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Grain yield in Composite Cross Five of barley: effects of natural selection

Published online by Cambridge University Press:  12 April 2002

E. Y. DANQUAH  and
J. A. BARRETT
E. Y. DANQUAH
Affiliation:
Department of Crop Science, University of Ghana, P.O. Box LG44, Legon, Ghana
J. A. BARRETT
Affiliation:
Department of Genetics, University of Cambridge, Downing Street, Cambridge, CB2 3EH
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Abstract

A range of three generations from each of three populations of Cambridge Composite Cross Five of barley spanning a period of 18 years of cultivation in Cambridge was evaluated for grain yield over 2 years in the field in 1991 and 1992. The design of the experiment was a randomized complete block with two replications. In 1991, the yield of the best composite cross generation was 78% that of Atem, a commercial variety bred for N.W. European conditions. In the drought-affected year, 1992, three of the composite cross generations performed better than Atem. It is suggested that composite cross populations may be useful in deriving lines for low-input agriculture.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 138 , Issue 2 , March 2002 , pp. 171 - 176
Copyright
© 2002 Cambridge University Press

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