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dc.contributorUdupa, Sripada M.en_US
dc.contributorMavindidze, Peteren_US
dc.contributorMutengwa, Charlesen_US
dc.creatorMutari, Bruceen_US
dc.identifier.citationBruce Mutari, Sripada M. Udupa, Peter Mavindidze, Charles Mutengwa. (8/11/2017). Detection of rust resistance in selected Zimbabwean and ICARDA bread wheat (Triticum aestivum) germplasm using conventional and molecular techniques. South African Journal of Plant and Soil, 35(2).en_US
dc.description.abstractHost resistance is the most effective and economical method to minimise yield losses caused by rusts. The aim of this study was to detect the presence of resistance in 75 wheat genotypes. The presence of the genes Sr2, Sr24, Lr34, Lr37, Lr46 and Lr68 was investigated using simple sequence repeat and sequence tagged site markers. Quantitative aspects of resistance to leaf rust were assessed through infection response, disease severity, coefficient of infection (CI), disease incidence (DI), leaf tip necrosis (Ltn) and area under disease progress curve (AUDPC) under natural epidemics. Highly significant (p ≤ 0.001) differences were observed among the genotypes for CI, DI, AUDPC and relative AUDPC (rAUDPC). Twenty genotypes exhibited high levels of adult-plant resistance, showing CI less than 20% and AUDPC less than 300%, with moderately susceptible to susceptible reactions. The most frequently occurring gene was Lr46 (21%), followed by Lr68 (20%), Lr34 (19%), Lr37 (11%), and Sr24 (0%). Selection for Lr34 and Lr46 based on Ltn alone can sometimes be misleading because of its variable expression in different genetic backgrounds. Cultivars grown in Zimbabwe lacked important rust resistance genes.en_US
dc.publisherTaylor & Francis: STM, Behavioural Science and Public Health Titles - No Open Selecten_US
dc.sourceSouth African Journal of Plant and Soil;35,(2017)en_US
dc.subjectsimple sequence repeaten_US
dc.subjectwheat germplasmen_US
dc.subjectrust resistance genesen_US
dc.subjectsequence tagged siteen_US
dc.titleDetection of rust resistance in selected Zimbabwean and ICARDA bread wheat (Triticum aestivum) germplasm using conventional and molecular techniquesen_US
dc.typeJournal Articleen_US
cg.contributor.centerDepartment of Research and Specialists Services - DRSSen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Fort Hare - UFHen_US
cg.contributor.crpCRP on Wheat - WHEATen_US
cg.contributor.funderFood and Agriculture Organization of the United Nations - FAOen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionNorthern Africaen_US
dc.identifier.statusOpen accessen_US

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