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Two accessions, V336 and V618, of the A. E. Watkins wheat (Triticum aestivum) collection were studied genetically for their resistance to leaf rust (Puccinia recondita). The two accessions have in common a dominant gene that gives a fleck infection type reaction to all the isolates of leaf rust used. This gene may be a previously unidentified gene and we have tentatively assigned the gene symbol LrW. Both accessions also have gene Lr33 and V336 has LrB.
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Dyck et al. (1989) studied this question.
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