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The response of swede varieties and their hybrids to soil pH

Published online by Cambridge University Press:  27 March 2009

O. A. Denton  and
W. J. Whittington
O. A. Denton
Affiliation:
Nottingham University School of Agriculture, Sutton Bonington, Loughborough, Leics.
W. J. Whittington
Affiliation:
Nottingham University School of Agriculture, Sutton Bonington, Loughborough, Leics.
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Summary

Four swede varieties and their six F1 hybrids were grown for 2 years in plots varying in pH from 4·2 to 8·4. Yields were highest at intermediate pH's and the average yield of the hybrids was greater than that of the parents. The plants on the low pH plots (4·2, 4·6, 4·7) were less infected with mildew than those at high pH (6·7, 7·7, 8·4). There was no marked resistance to mildew amongst the varieties. The response by the parents and hybrids was assessed by regression analysis and showed that the variety Reform was most reactive and Harvester most stable. Stability patterns appeared to be inherited. Inheritance patterns for yield and number of leaves were determined. It was concluded that selection for better swedes should be carried out in environments other than those to which the crop is currently restricted.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 85 , Issue 3 , December 1975 , pp. 395 - 401
Copyright
Copyright © Cambridge University Press 1975

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