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Genetic variation amongst swede varieties and their hybrids and their response to soil fertility

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, Leica.
W. J. Whittington
Affiliation:
Nottingham University School of Agriculture, Sutton Bonington, Loughborough, Leica.
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Summary

The mean total yield and mean fresh weight of seven swede varieties and their F1 hybrids was increased primarily by nitrogen and also by phosphorus fertilizer. There was no evidence of genotype × environment interaction for characters concerned with yield except for dry-matter content where two varieties, Best-of-All and Reform, were less stable to fertility environments than the others. Heterosis was common amongst F1 hybrids and this suggests their use in swede improvement: the inheritance pattern of root weight showed overdominance, shoot weight showed partial dominance and drymatter content showed additivity, with no evidence of gene interaction. Segregation for root fresh weight and dry-matter content occurred in F2 populations and although an overall negative correlation was found there was evidence that progeny from certain crosses gave reasonable prospects of combining both characters.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 87 , Issue 2 , October 1976 , pp. 443 - 446
Copyright
Copyright © Cambridge University Press 1976

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References

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