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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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References

Busbice, T. H. & Wilsie, C. P. (1966). Inbreeding depression and heterosis in autotetraploids with application to Medicago saliva L. Euphytica 15, 52–67.CrossRefGoogle Scholar
Causton, D. R. (1967). Mathematical properties of growth curves and plant growth analysis. Ph.D. Thesis, University of Wales.Google Scholar
Crowley, J. G. & Rees, H. (1968). Fertility and selection in tetraploid Lolium. Chromosoma 24, 300–8.CrossRefGoogle Scholar
Derwyn, R., Whalley, B., McKell, C. M. & Green, L. R. (1966). Effect of environmental conditions during the parent generation on seedling vigour of the subsequent seedlings of Oryzopsis miliacea (L.) Benth and Hook. Crop Sci. 6, 510–12.CrossRefGoogle Scholar
Dewey, D. R. (1969). Inbreeding depression in diploid and induced autotetraploid crested wheatgrass. Crop Sci. 9, 592–5.CrossRefGoogle Scholar
Foster, C. A. & Wright, C. E. (1970). Variation in the expression of self-fertility in Lolium perenne L. Euphytica 19, 61–70.CrossRefGoogle Scholar
Griffiths, D. J. & Pegler, R. A. D. (1966). Cross fertilization between diploid and tetraploid ryegrass. J. Br. Grassld Soc. 21, 162–6.CrossRefGoogle Scholar
Hayes, H. K. & Clarke, S. E. (1925). Selection in selffertilized lines as a means of improving timothy. Sci. Agr. 5, 313–17.Google Scholar
Jenkin, T. J. (1931). Self fertility in perennial ryegrass (Lolium perenne). Welsh PI. Breed. Stn Aberysttvyth, Bull. Series H, 12, 100–19.Google Scholar
Kalton, R. R., Smit, A. G. & Leffel, R. G. (1952). Parent-inbred progeny relationships of selected orchard-grass clones. Agron. J. 44, 481–6.CrossRefGoogle Scholar
Murphy, R. P. (1942). Methods of breeding crested wheatgrass Agropyron cristatum. J. Am. Soc. Agron. 34, 553–65.CrossRefGoogle Scholar
Murphy, R. P. & Attwood, S. S. (1953). The use of I1 families in breeding Smooth Bromegrass. Agron. J. 45, 24–8.CrossRefGoogle Scholar
Nielsen, E. L. & Drolsom, P. H. (1965). The use of self-fertility in breeding polyploid grasses. Proc. IX int. Qrassld Congr. pp. 151–4.Google Scholar
Stearns, F. (1960). Effects of seed environment during maturation on seedling growth. Ecology 41, 221–2.CrossRefGoogle Scholar