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The assessment of herbage legume varieties: IV. The potential of 64-chromosome white clover

Published online by Cambridge University Press:  27 March 2009

W. Ellis Davies
W. Ellis Davies
Affiliation:
Welsh Plant Breeding Station, Aberystwyth
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Summary

Colchicine induced 64-chromosome white clover was compared at a number of centres with control material (2n = 32), as spaced plants and in broadcast plots with and without companion grasses.

The chromosome-doubled material generally conformed to the well-known reaction of polyploids; the plants were later flowering, had thicker petioles and stolons, broader leaflets and spread less vigorously. Yield of green matter of spaced plants was much less, and in broadcast plots the gross yield (grass + clover) and that of the clover fraction was 7% less than in comparable S. 100 plots. The Finlay-Wilkinson analysis indicated that the chromosome-doubled form did not respond to improved conditions to the same extent as did the control varieties. The presence of grass in the mixture partly compensated for low clover yield, but was insufficient to increase total yields to that of S. 100 controls.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 73 , Issue 1 , August 1969 , pp. 139 - 144
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Åkerberg, E., Bingefors, S., Josefsson, A. & Ellerström, S. (1963). Induced polyploids as fodder crops. In Recent Plant Breeding Research, pp. 125–49. Svalöf 1946–1961. Stockholm: Almqvist and Wiksell.Google Scholar
Davies, W. Ellis & Tyler, B. F. (1962). The yield and composition of lucerne, grass and clover under different systems of management. IV. Further studies on the effect of frequency of cutting lucerne and lucerne grown with grass. J. Br. Grassld Soc. 17, 306–14.CrossRefGoogle Scholar
Davies, W. Ellis, Thomas, T. A. & Young, N. R. (1968). The assessment of herbage legume varieties. III. Annual variation in chemical composition of eight varieties. J. agric. Sci., Camb. 71, 233–41.CrossRefGoogle Scholar
Evans, A. M. (1955). The production and identification of polyploids in red clover, white clover and lucerne. New Phytol. 54, 149–62.CrossRefGoogle Scholar
Finlay, K. W. & Wilkinson, G. N. (1963). The analysis of adaptation in a plant breeding programme. Aust. J. agric. Res. 14, 742–54.CrossRefGoogle Scholar
Levan, A. (1942). Plant breeding by induction of polyploidy and some results in clovers. Hereditas 28, 245–6.Google Scholar
Müntzing, A. (1967). Genetics: Basic and Applied. pp. 296–336. Stockholm: Lts Förlag.Google Scholar
Stebbins, G. L. (1950). Variation and Evolution in Plants, pp. 643. London: Oxford University Press.CrossRefGoogle Scholar
Tiemann, H. (1966). Vergleichende Untersuchungen über den Einfluss der Genomverdoppelung auf die Ertragsfähigkeit bei Weissklee (Trifolium repens L.) Züchter 36, 302–13.CrossRefGoogle Scholar
Turesson, G. (1962). Result of colehicine doubling in the red alsike and white clover. Agric. Hort. Gen. 20, 111–35.Google Scholar
Wit, F. (1958). Tetraploid Italian ryegrass (Lolium multiflorum Lam.) Euphytica 7, 47–58.CrossRefGoogle Scholar