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A reappraisal of stem reserve contribution to grain yield in spring barley (Hordeum vulgare L.)

Published online by Cambridge University Press:  27 March 2009

R. W. Daniels ,
M. B. Alcock  and
D. H. Scarisbrick
R. W. Daniels
Affiliation:
Department of Agriculture, University College of North WalesBangor
M. B. Alcock
Affiliation:
Department of Agriculture, University College of North WalesBangor
D. H. Scarisbrick
Affiliation:
Department of Agriculture, Wye College, University of LondonAshford, Kent
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Summary

Pre-anthesis stem reserve contribution to grain yield was assessed in two spring barley cultivars of contrasting height. It was greatest in the taller, but final grain yields were similar. Partitioning of total reserve capacity to various plant parts showed that the leaf and sheath below the peduncle were most important, followed by stem internodes which had increasing reserve capacity up to internode 4.

It is suggested that stem reserves are valuable for yields commonly achieved in U.K. commercial practice.

High grain yields were associated with large positive increases in stem dry weight after anthesis. This would indicate that the source capacity to boost yield is more than proportional to that required to fill the grain alone.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 98 , Issue 2 , April 1982 , pp. 347 - 355
Copyright
Copyright © Cambridge University Press 1982

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