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Vigour differences in brassica seed and their significance to emergence and seedling variability

Published online by Cambridge University Press:  27 March 2009

A. A. Powell ,
J. M. Thornton  and
J. A. Mitchell
A. A. Powell
Affiliation:
Department of Agriculture, University of Aberdeen, Aberdeen AB9 1UD, UK
J. M. Thornton
Affiliation:
Department of Agriculture, University of Aberdeen, Aberdeen AB9 1UD, UK
J. A. Mitchell
Affiliation:
Department of Agriculture, University of Aberdeen, Aberdeen AB9 1UD, UK
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Summary

Seeds of the Brussels sprout cultivar Asmer Aries having low vigour as a result of ageing emerged more slowly when sown in module trays and had slightly lower final emergences than seeds which had not undergone ageing and were of high vigour. Low seed vigour also resulted in the production of seedlings which were shorter and more variable in height at the first-leaf stage. Once the seedlings reached the transplanting stage there was greater variability in the fresh and dry weights of seedlings produced from seeds having low vigour, although the mean seedling weights differed little from those produced by high-vigour seeds. Similar observations were made for samples of commercial seed of cauliflower, Brussels sprouts, Dutch cabbage, red cabbage and calabrese provided by vegetable transplant propagators and in use in 1988. Low-vigour seeds again emerged more slowly with low final emergence and produced smaller and more-variable seedlings. The implications of these observations for the production of vegetable seedlings for transplanting are discussed.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 116 , Issue 3 , June 1991 , pp. 369 - 373
Copyright
Copyright © Cambridge University Press 1991

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References

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