The effect of R-genes for hypersensitivi
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L. Roer; H. J. Toxopeus
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Article
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1961
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Springer
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English
⚖ 455 KB
Breeding material of potatoes containing the genes R 1 , R 2 and R3 , single or in combination, was tested for its resistance in the flesh to five different races of Phytophthora infestans. There was a considerable variation in response, from extreme hypersensitivity with no necrosis visible with t