Files and links (1)
CC BY V4.0, Open Access
Dissertation
GENETIC ANALYSIS OF HEXAPLOID SPRING WHEAT FOR HESSIAN FLY RESISTANCE AND IMPROVED END-USE QUALITY
Washington State University
Doctor of Philosophy (PhD), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000003344
Handle:
https://hdl.handle.net/2376/122599
Abstract
Since it’s domestication over 10,000 years ago, wheat (Triticum aestivum L.) has risen to and remained a major food source for people around the globe. Current estimates place wheat as the third most produced crop, providing around 20% of all human caloric intake. Wheat is turned into a wide array of end-use products that are consumed. The vast difference in these end-use products dictate that wheat is breed and grown with different quality parameters. Chapter two of this dissertation describes a genetic analysis that was conducted on more than a dozen end-use quality traits to better understand the genetic underpinning controlling wheat quality. This genetic analysis was performed on 180 recombinant inbred lines created from the cross of wheat varieties ‘Kelse’ and ‘Scarlet’, and identified 134 loci that were significantly related to 21 wheat quality traits. Twenty-two of the loci explained more than 15% of the phenotypic variation observed in the recombinant lines. These chromosomal locations identified provide more understanding as to how breeders can best improve wheat quality. Wheat as a crop faces many biotic stresses which threaten production levels and the world food supply. One such stress is Hessian fly which is an emerging problem in the wheat producing areas of the Pacific Northwest. The best way to combat Hessian fly is with naturally occurring resistance genes that are commonly found in wheat. In chapters three and four, work is presented showing the genetic markers created in order to enhance breeding efforts to deploy a resistance gene that has shown great success in the Pacific Northwest. It also reveals the efforts to fine map the exact chromosomal location of this highly effective Hessian fly resistance gene. The resulting information provides breeders with the genetic tools to perform marker-assisted selection for Hessian fly resistance.
Metrics
3 File views/ downloads
29 Record Views
Details
- Title
- GENETIC ANALYSIS OF HEXAPLOID SPRING WHEAT FOR HESSIAN FLY RESISTANCE AND IMPROVED END-USE QUALITY
- Creators
- Samuel Prather
- Contributors
- Michael O Pumphrey (Advisor)Xianming Chen (Committee Member)Kimberly Garland-Campbell (Committee Member)Zhiwu Zhang (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Crop and Soil Sciences, Department of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Publisher
- Washington State University
- Number of pages
- 225
- Identifiers
- 99900652103601842
- Language
- English
- Resource Type
- Dissertation