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The Effect of Photoperiod on Development on Soyabean and Cowpea Cultivars Grown in the U.K. in Summer*

Published online by Cambridge University Press:  03 October 2008

P. A. Huxley ,
R. J. Summerfield  and
A. P. Hughes
P. A. Huxley
Affiliation:
University of Reading, Department of Agriculture and Horticulture Plant Environment Laboratory, Shinfield Grange, Reading
R. J. Summerfield
Affiliation:
University of Reading, Department of Agriculture and Horticulture Plant Environment Laboratory, Shinfield Grange, Reading
A. P. Hughes
Affiliation:
University of Reading, Department of Agriculture and Horticulture Plant Environment Laboratory, Shinfield Grange, Reading
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Summary

Various sequences of different daylength regimes were given to five potentially tropically-adapted soyabean and three cowpea cultivars, to establish the duration of the photoinductive period which is necessary for their subsequent satisfactory development for experimental trials in the U.K. in long summer days. Genotypic differences in response to photoperiodic delay of flowering were clearly distinguished, but unless these soyabean and cowpea cultivars were kept in short photoperiods for at least 49 days, flower retention and pod development were adversely affected when they were subsequently planted in natural U.K. long summer days. The developmental stages from juvenility to flowering are discussed.

Type
Research Article
Information
Experimental Agriculture , Volume 10 , Issue 4 , October 1974 , pp. 225 - 239
Copyright
Copyright © Cambridge University Press 1974

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References

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