To investigate powdery mildew resistance in rye ( Secale cereale ), 397 inbred lines of winter rye were tested for susceptibility to infection with Blumeria graminis f. sp. secalis . The 50 most tolerant lines and 50 most infected lines were chosen for comparison. They were next tested for the presence of 4 markers linked to 4 alleles for resistance to powdery mildew, identified earlier in common wheat ( Triticum aestivum ). We found Pm3a only in 3 susceptible genotypes of winter rye, although this marker is linked to the powdery mildew resistance gene in wheat. The other 3 markers linked to Blumeria graminis f. sp. secalis resistance genes ( Pm3b, Pm3c, Pm3d ) were found in neither resistant nor susceptible rye genotypes.
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Jurkowski et al. (2019) studied this question.
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