COMBINING YELLOW DWARF VIRUS, FUSARIUM HEAD BLIGHT, UG99 STEM AND STRIPE RUST RESISTANCE GENES IN SOFT WINTER WHEAT ADAPTED TO EASTERN USA
Functional Foods Research Unit
2010 Annual Report
1a.Objectives (from AD-416)
1) Move Bdv2 from wheat chromosome 7D to chromosome 7A or 7B.
2) Combine Bdv3 and Qfhs.pur-7E.
3) Characterize F2:3 families from the cross PI410996(resistant) x P9762(susceptible) to determine the inheritance of resistance to stem rust and map the resistance.
4) Characterize F2:3 families from the cross PI163050(resistant) x P9762(susceptible) to characterize and map resistance to stripe rust, and
5) Develop soft winter wheat cultivars that have Bdv2, Bdv3, Qfhs.pur-7EL, and resistance to stem rust and stripe rust.
1b.Approach (from AD-416)
Genetic improvement of wheat for stem rust resistance and stripe rust resistance using genetic markers and traditional plant breeding methods. Varieties that have demonstrated increased resistance will be crossed with wheat varieties that are in current commercial use.
This is a congressionally mandated agreement for the improvement of wheat genetics. The fusarium head blight (FHB) resistance QTL, Qfhs.pur-7EL, from tall wheatgrass (Thinopyrum ponticum) was introgressed into wheat onto the long arm of chromosome 7D by the wheat research program at Purdue University. Also, two yellow dwarf virus disease (YD) resistance genes, Bdv2 from chromosome 7St by researchers at INRAN, France and Bdv3 from chromosome 7E, by the wheat research program at Purdue University, were independently introgressed from intermediate wheatgrass (Thinopyrum intermedium) into wheat onto the long arm of chromosome 7D. The Authorized Departmental Officer's Designated Representative monitored progress through the annual progress report.