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The association of a gene for leaf rust resistance with the chromosome 7d suppressor of stem rust resistance in common wheat



The association of a gene for leaf rust resistance with the chromosome 7d suppressor of stem rust resistance in common wheat



Genome 29(3): 467-469



Backcross lines of gene LrT2 for resistance to leaf rust [Puccinia recondata] in the common wheat (Triticum aestivum L.) 'Thatcher' unexpectedly show improved resistance to stem rust [Puccinia graminis] compared with that of the recurrent parent. Genetic-cytogenetic evidence indicates that LrT2 is on chromosome 7D, which is known to carry the "suppressor" gene(s) that prevent the expression of stem rust resistance conferred by other genes in 'Canthatch'. Thus, LrT2 may be a nonsuppressing allele of the suppressor gene(s) or be closely linked to such an allele. LrT2 has been designated Lr34.

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Accession: 006603624

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DOI: 10.1139/g87-081



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