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Nitrogen and dry-matter accumulation in high lysine and normal varieties of barley

Published online by Cambridge University Press:  27 March 2009

A. P. Rhodes
Affiliation:
Plant Breeding Institute, Marts Lane, Trumpington, Cambridge CB2 2LQ
G. Jenkins
Affiliation:
Plant Breeding Institute, Marts Lane, Trumpington, Cambridge CB2 2LQ

Summary

Dry matter and Kjeldahl nitrogen estimations were made on the roots and shoots of the barley varieties Riso 1508, Hiproly and Maris Mink from the seedling stage to maturity under three nitrogen treatments. After heading, the shoots were further separated into ears and stems plus leaves. Total plant nitrogen uptake was greatest in the high lysine variety Riso 1508 and was associated with a greater production of dry matter. However, the proportion of total plant nitrogen and dry matter in the grain was highest in the variety Maris Mink and this effect increased with increasing nitrogen supply. The comparative efficiency of dry-matter production and nitrogen translocation of these varieties is discussed in relation to breeding barley of improved protein yield and quality.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1976

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References

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