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XX.—Inheritance of Resistance to Blight (Phytophthora infestans) in Potatoes: Comparison of A and B Strains*

Published online by Cambridge University Press:  11 June 2012

William Black
William Black
Affiliation:
Scottish Plant Breeding Station, Corstorphine, Edinburgh.
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Extract

Previous reports (Black, 1943, 1945) on the resistance of potatoes to the blight fungus (Phytophthora infestans) have shown the existence of at least two major genetic factors (Ra and Rb) in the host, and the occurrence of not less than two strains (A and B) of the pathogen.

From the studies then reported, it was concluded that the two genes had been brought into the potato from different phyletic sources and that one, Ra, when in the dominant state, conferred resistance to strain A, while similarly Rb conferred resistance to strain B.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 63 , Issue 3 , 1949 , pp. 290 - 301
Copyright
Copyright © Royal Society of Edinburgh 1949

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Footnotes

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

References

References to Literature

Black, W., 1943. “Inheritance of Resistance to Two Strains of Blight (Phytophthora infestans de Bary) in Potatoes”, Trans. Roy. Soc. Edin., LXI, 137–147.Google Scholar
Black, W., 1945. “Inheritance of Resistance to Blight (Phytophthora infestans) in Potatoes: Unbalanced Segregations”, Proc. Roy. Soc. Edin., B, LXII, 171–181.Google Scholar
Black, W., and Haigh, J. C., 1947. “Strains of Potato Blight in Scotland”, Scottish Agriculture, XXVII, 49–50.Google Scholar
Lehmann, H., 1941. “Untersuchungen über die Genetik und Physiologie der Resistenz der Kartoffel gegen Phytophthora infestans de Bary. Die genetische Analyse der Resistenz von Solanum demissum sp. (vorl. Mitteilung)”, Züchter, XIII, 33–34.Google Scholar
Reddick, D., and Mills, W., 1938. “Building up Virulence in Phytophthora infestans”, Amer. Pot. Journ., XV, 29–34.Google Scholar
Thomas, P. T., 1945. Thirty-sixth Annual Report, John Innes Horticultural Institution, II.Google Scholar