Identification of leaf rust resistance genes in Triticum species for transfer to common wheat

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dc.contributor.authorAntonov A.I.
dc.contributor.authorMarais G.F.
dc.date.accessioned2011-05-15T15:55:08Z
dc.date.available2011-05-15T15:55:08Z
dc.date.issued1996
dc.description.abstractA total of 877 Triticum accessions (27 species) were screened for resistance to leaf rust (Puccinia recondita f. sp. tritici) using mixed inoculum of pathotypes UVPrt2, UVPrt3, UVPrtS, UVPrt9 and UVPrt13. Of these, 206 accessions were resistant/moderately resistant to all races. An attempt was made to cross each resistant accession with common wheat and to determine if resistance is expressed sufficiently in the presence of wheat genomes. Seventy nine accessions have not yet been crossed successfully, while the remaining 127 (representing 19 species) were crossed with common wheat. A number of transfer attempts failed in the F1 as a result of suppression of resistance (44 accessions) or formation of embryoless or non-viable seeds/seedlings (13 accessions). The resistance of 70 hybrids is fully expressed and these are now in various stages of back-crossing to wheat. The resistance was confirmed by retesting the species sources of the 70 successful combinations with the individual leaf rust pathotypes.
dc.description.versionArticle
dc.identifier.citationSouth African Journal of Plant and Soil
dc.identifier.citation13
dc.identifier.citation2
dc.identifier.issn2571862
dc.identifier.urihttp://hdl.handle.net/10019.1/9602
dc.titleIdentification of leaf rust resistance genes in Triticum species for transfer to common wheat
dc.typeArticle
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