Location: Plant Science Research2012 Annual Report
1a. Objectives (from AD-416):
On-farm testing and proof-of-concept trials for the 2008-09 and 2009-10 wheat growing seasons for newly-developed bread wheat cultivars.
1b. Approach (from AD-416):
Plant, maintain, examine, and harvest drill-strip size experiments on growers farms using standard varieties and newly-developed bread wheat cultivars.
3. Progress Report:
This research relates to inhouse Objective 1: Identify sources of resistance to foliar fungal pathogens and introgress resistance into adapted wheat. All of our North Carolina-adapted experimental elite hard wheats were also tested in Louisiana, Georgia, Kentucky, Virginia, Maryland, Indiana, Arkansas, Texas, Oklahoma, Nebraska, and Washington State. Preliminary results from those locations indicated that the two lines have wide-adaptation in the U.S. Our elite materials, as well as all of our early-generation lines were tested for Ug99 stem rust resistance in Kenya. We are the only program in the world that has combined 4 genes for resistance to stem rust into single lines. We have been able to do this by shuttling segregating wheat populations between North Carolina and Kenya. We do this by selecting types with good agronomic performance in North Carolina, then selecting within those for resistance in Kenya. We then conduct genotyping in North Carolina for identification of specific stem rust resistance genes.