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dc.contributorSingh, R. P.en_US
dc.contributorWard, Ren_US
dc.contributorWanyera, Ruthen_US
dc.contributorKinyua, Men_US
dc.contributorNjau, Pen_US
dc.contributorFetch, Ten_US
dc.contributorPretorius, Zen_US
dc.contributorYahyaoui, Amoren_US
dc.creatorJin, Yueen_US
dc.identifier.citationYue Jin, R. P. Singh, R Ward, Ruth Wanyera, M Kinyua, P Njau, T Fetch, Z Pretorius, Amor Yahyaoui. (25/1/2008). Characterization of seedling infection types and adult plant infection responses of monogenic Sr gene lines to race TTKS of Puccinia graminis f. sp tritici. Plant Disease, 91 (9), pp. 1096-1099.en_US
dc.description.abstractStem rust, caused by Puccinia graminis f. sp. tritici, historically was one of the most destructive diseases of wheat and barley. The disease has been under effective control worldwide through the widespread use of host resistance. A number of stem rust resistance genes in wheat have been characterized for their reactions to specific races of P. graminis f. sp. tritici. Adult plant responses to race TTKS (also known as Ug99) of monogenic lines for Sr genes, a direct measurement of the effectiveness for a given gene, have not been investigated to any extent. This report summarizes adult plant infection responses and seedling infection types for monogenic lines of designated Sr genes challenged with race TTKS. High infection types at the seedling stage and susceptible infection responses in adult plants were observed on monogenic lines carrying Sr5, 6, 7a, 7b, 8a, 8b, 9a, 9b, 9d, 9g, 10, 11, 12, 15, 16, 17, 18, 19, 20, 23, 30, 31, 34, 38, and Wld-1. Monogenic lines of resistance genes Sr13, 22, 24, 25, 26, 27, 28, 32, 33, 35, 36, 37, 39, 40, 44, Tmp, and Tt-3 were effective against TTKS both at the seedling and adult plant stages. The low infection types to race TTKS observed for these resistance genes corresponded to the expected low infections of these genes to other incompatible races of P. graminis f. sp. tritici. The level of resistance conferred by these genes at the adult plant stage varied between highly resistant to moderately susceptible. The results from this study were inconclusive for determining the effectiveness of resistance genes Sr9e, 14, 21, and 29 against race TTKS. The understanding of the effectiveness of individual Sr genes against race TTKS will facilitate the utilization of these genes in breeding for stem rust resistance in wheat.en_US
dc.publisherAmerican Phytopathological Societyen_US
dc.rightsCopyrighted; Non-commercial educational use onlyen_US
dc.sourcePlant Disease;91,(2007) Pagination 1096,1099en_US
dc.subjectrust resistanceen_US
dc.subjectmonogenic sr geneen_US
dc.subjectpuccinia graminis f. sp. triticien_US
dc.titleCharacterization of seedling infection types and adult plant infection responses of monogenic Sr gene lines to race TTKS of Puccinia graminis f. sp triticien_US
dc.typeJournal Articleen_US
cg.subject.agrovocstem rusten_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUnited States Department of Agriculture, Agricultural Research Service - USDA-ARSen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_US
cg.contributor.centerKenya Agricultural Research Institute - KARIen_US
cg.contributor.centerAgriculture and Agri-Food Canada, Cereal Research Centre - AAFC - CRSen_US
cg.contributor.centerUniversity of the Free State - UFSen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
dc.identifier.statusOpen accessen_US

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