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Changes in the angle and curvature of the uppermost leaves of winter wheat

Published online by Cambridge University Press:  27 March 2009

J. P. Ledent
J. P. Ledent
Affiliation:
Laboratoire d'Ecologie Végétale, Universitéde Louvain, Belgium
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Summary

Each of the three uppermost leaves of wheat canopies studied in 1975 and 1976 showed a downward movement after its emergence. The variations with time of leaf angle were greatest in the flag leaf. Genotypes differed markedly in the rate of change with age in flag-leaf angle. Leaf curvature did not vary with age. There were differences between years in the rate of leaf movement, but cultivars ranked roughly the same in terms of leaf angle in each year. Grain yield per hectare was not related to leaf angle change. Most of the higher-yielding genotypes included in the study had straight leaves, the correlation between curvature and yield being —0·30 in 1975 and —0·60 in 1976.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 90 , Issue 2 , April 1978 , pp. 319 - 323
Copyright
Copyright © Cambridge University Press 1978

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