Presenter: Mao Huang
Advisor: Dr.Clay H. Sneller, Department of Horticulture and Crop Science
Proposal Type: PhD Proposal
Title of Presentation: Applications of Genome Wide Analyses to Improve Wheat (Triticum aestivum L.) Yield, Yield stability and Fusarium Head Blight resistance
Abstract: Hexaploid wheat (Triticum aestivum L. em. Thell) is one of the world’s most important cereal crops. Wheat yield, yield stability and Fusarium head blight (FHB) resistance are important traits for wheat breeding. Our objectives are to assess the relative efficiency of genomic selection (GS) for these traits; to assess the genotype by environment patterns and its effects on GS; to validate predictive results across datasets; to identify and confirm marker-trait associations; and to evaluate the potential of allele-based breeding. Genotyping will be conducted using both 90K SNP chip panel and genotype-by-sequencing. Phenotyping will be conducted on three different populations, consisting of 280, 300, and 380 lines, respectively, from seven different soft red winter wheat breeding programs in the U.S. Ridge regression best linear unbiased prediction, genome wide association analysis, and principal component analysis will be conducted in R software. Analyses of heterogeneity of genotype regressions, as well as additive main effects and multiplicative interaction models will be conducted in SAS. We expect to determine the efficacy of GS and to verify stable QTLs responsible for yield, yield stability, and FHB resistance. Our results would also identify lines with the highest breeding values to use for variety advancement. The findings of this research should directly benefit wheat breeding programs in the Northeastern U.S.
November 6, 2013
244 Kottman Hall (Columbus)
121 Fisher Auditorium (Wooster)