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Yield improvement in spring oats

Published online by Cambridge University Press:  27 March 2009

D. A. Lawes
D. A. Lawes
Affiliation:
Welsh Plant Breeding Station, Aberysiwyth
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Summary

Grain yields of 14 spring oat varieties grown at two levels of nitrogen in three seasons at two locations were compared. A genotype × environment analysis demonstrated that the more recent varieties not only had higher yields but also were better adapted to high-yielding environments. Modern varieties demonstrated a yield improvement of 30% over the older varieties. Examination of components of yield by a series of simple correlations indicated that improvement in varieties by breeding has been associated with shortened straw and higher harvest indices. Within varieties, 1000-grain weight was the most stable character and harvest index the character which varied most consistently with variations in grain yield.

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 89 , Issue 3 , December 1977 , pp. 751 - 757
Copyright
Copyright © Cambridge University Press 1977

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