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An analysis of the growth of inbred progeny of Lolium

Published online by Cambridge University Press:  27 March 2009

E. W. Bean  and
Chen Yok-Hwa
E. W. Bean
Affiliation:
Welsh Plant Breeding StationAberystwyth.
Chen Yok-Hwa
Affiliation:
Welsh Plant Breeding StationAberystwyth.
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Summary

The growth of the progeny from self-pollination was studied in seven cultivars of Lolium perenne and five cultivars of Lolium multiflorum. All cultivars otLolium perenne showed a reduction in the dry weight of the selfed progeny after one generation of inbreeding, although only four of these attained statistical significance. By contrast the reduction in Lolium multiflorum was less marked with only one cultivar showing a significant reduction on inbreeding. An analysis of the growth of two of the Lolium perenne cultivars which showed reduced vigour in progeny from self-pollination suggested that a lower germination rate and a slower development of leaves in the seedling were two factors which resulted in reduced weights in inbred progeny. The possible effect of the environment in which the inbreds were produced on seedling performance is discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 79 , Issue 1 , August 1972 , pp. 147 - 153
Copyright
Copyright © Cambridge University Press 1972

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