Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Genomic Selection Strategies To Predict Grain Yield And Disease Resistance Traits In A Wheat Breeding Program, Virginia Laura Verges
Genomic Selection Strategies To Predict Grain Yield And Disease Resistance Traits In A Wheat Breeding Program, Virginia Laura Verges
Theses and Dissertations--Plant and Soil Sciences
Genomic selection (GS) is a form of marker-assisted selection (MAS) that simultaneously estimates all locus, haplotype or marker effects across the entire genome to calculate genomic estimated breeding values (GEBVs). Since its inception, it has had the attention of breeders keen on finding tools to accelerate genetic gain and reduce phenotyping costs in the breeding program. A first objective of this study was to evaluate strategies to design the training population (TP) and validating population (VP) to estimate GEBVs for grain yield and agronomic traits for wheat breeding lines. Our results demonstrate that, despite the small family size, an approach …
Optical Seed Sorter-Based Selection Lowers Deoxynivalenol Accumulation In Soft Red Winter Wheat, William Jesse Carmack
Optical Seed Sorter-Based Selection Lowers Deoxynivalenol Accumulation In Soft Red Winter Wheat, William Jesse Carmack
Theses and Dissertations--Plant and Soil Sciences
Fusarium head blight (FHB) of wheat (Triticum aestivum L.) results in discolored grain contaminated with deoxynivalenol (DON). DON accumulation, an indicator of FHB resistance, can be quantified and used as the basis for direct phenotypic selection, but testing is expensive. The primary objective of this study was to evaluate an optical seed sorter as an alternative to DON testing for FHB resistance breeding. Three hundred F4 derived soft red winter wheat (SRWW) breeding lines were grown in an inoculated FHB nursery over several years in Lexington, KY. Grain from each breeding line was sorted using an optical seed sorter calibrated …