Location: Hard Winter Wheat Genetics Research Unit
2013 Annual Report
Approximately 2100 unadapted lines from the Triticeae Coordinated Agricultural Project (TCAP) winter wheat association mapping panel were rated for growth stage, leaf rust severity, and infection type twice at Castroville, TX, and once at Manhattan, KS. A supplemental set of unadapted lines was also rated at Hutchinson, KS in 2013. Two additional elite Winter Wheat Association Mapping panels were rated for growth stage, leaf rust severity, and infection type at Castroville, TX and Manhattan, KS. These data are ready for analysis.
Gene pyramiding of shortened versions of stem rust resistance genes Sr22, Sr26, Sr35 and Sr57 has been completed in a cultivar 'Duster' background. First crosses have been made to ten commercial hard red or hard white winter wheat varieties to transfer the pyramid to additional backgrounds.
The race shift in the wheat stripe rust pathogen in the Great Plains in 2012 to virulence on TAM111 was verified with adult plant tests. In collaboration with Texas A&M researchers, the putatively affected resistance gene in TAM111 was mapped. A paper is in final revision prior to submission.