Section 6
Chapter 5,083

Cyto genetical studies in wheat part 10 monosomic analysis and linkage studies involving genes for resistance to puccinia graminis f sp tritici in cultivar kota

Mcintosh, R.A.

Heredity 41(1): 71-82


ISSN/ISBN: 0018-067X
Accession: 005082194

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Two genes for resistance to P. graminis f. sp. tritici were located in chromosome 2B of 'Kota' wheat [Triticum aestivum]. Both were mapped in the long arm. The 1st designated Sr28 was situated distally to Sr9 and showed 34.6 .+-. 2.8% recombination with the centromere. The 2nd gene, which was not definitely distinguished from Sr16 either on the basis of recombination or by its response to several pathogen cultures, was inherited independently of the 2B centromere and of Sr9, but showed 38.2 .+-. 1.9 and 29.2 .+-. 4.2% recombination with Sr28. Comparisons of present results with those from earlier studies suggested that 'Kota' possesses at least 5 genes for resistance.

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