Identification of quantitative trait loci and comparison of selection methods for barley yellow dwarf tolerance in spring oats and winter wheat
type: CreativeWork
description: Barley yellow dwarf (BYD) is one of the most destructive diseases of cereal crops worldwide. Barley yellow dwarf viruses (BYDVs) are responsible for BYD and affect many cereals including wheat and oats. Symptoms depend on cultivar and environment, but normally include stunted growth, leaf discoloration, inhibition of root formation and blasting of florets. Economic losses due to BYD are common in both wheat and oats due to reduced photosynthesis and inhibited roots. In the first study, the objective was to identify quantitative trait loci (QTL) for tolerance to BYD in the tolerant lines IL86-1156 and IL86-6404. A recombinant inbred line (RIL) population (Population 4) consisting of 115 lines, developed from a cross between IL86-1156 and the sensitive cultivar Clintland 64, was evaluated for BYD tolerance in the field at Urbana, IL in 2002, 2003, 2010 and 2011. A similar population (RIL population 5) of 177 oat RILs developed from a cross between IL86-6404 and the sensitive cultivar Clintland 64 was also evaluated for BYD tolerance in Urbana, IL over the same years. The populations had broad continuous distributions for BYD rating (0-9 scale). QTL for tolerance to BYD were identified on four chromosomes in RIL population 4 and seven chromosomes in RIL population 5. Two major QTL were observed on chromosome 3C and 19A in both populations. The QTL on chromosome 3C explained between 51.4% and 65.6% of the phenotypic variation while the QTL on chromosome 19A explained between 19% and 44%. Chromosomes with consensus QTL include 3C, 19A and 1C; however, 1C needs to be further investigated because it appears to be in a different location based on the population. Previous reports have identified large effect QTL for BYDV tolerance however; it is uncertain if they are in similar genomic regions. The results of this study indicate a few large effect regions are important for BYDV tolerance in IL86-1156 and IL86-6404. The markers that were found in association with these QTL ca…
abstract: Barley yellow dwarf (BYD) is one of the most destructive diseases of cereal crops worldwide. Barley yellow dwarf viruses (BYDVs) are responsible for BYD and affect many cereals including wheat and oats. Symptoms depend on cultivar and environment, but normally include stunted growth, leaf discoloration, inhibition of root formation and blasting of florets. Economic losses due to BYD are common in both wheat and oats due to reduced photosynthesis and inhibited roots. In the first study, the objective was to identify quantitative trait loci (QTL) for tolerance to BYD in the tolerant lines IL86-1156 and IL86-6404. A recombinant inbred line (RIL) population (Population 4) consisting of 115 lines, developed from a cross between IL86-1156 and the sensitive cultivar Clintland 64, was evaluated for BYD tolerance in the field at Urbana, IL in 2002, 2003, 2010 and 2011. A similar population (RIL population 5) of 177 oat RILs developed from a cross between IL86-6404 and the sensitive cultivar Clintland 64 was also evaluated for BYD tolerance in Urbana, IL over the same years. The populations had broad continuous distributions for BYD rating (0-9 scale). QTL for tolerance to BYD were identified on four chromosomes in RIL population 4 and seven chromosomes in RIL population 5. Two major QTL were observed on chromosome 3C and 19A in both populations. The QTL on chromosome 3C explained between 51.4% and 65.6% of the phenotypic variation while the QTL on chromosome 19A explained between 19% and 44%. Chromosomes with consensus QTL include 3C, 19A and 1C; however, 1C needs to be further investigated because it appears to be in a different location based on the population. Previous reports have identified large effect QTL for BYDV tolerance however; it is uncertain if they are in similar genomic regions. The results of this study indicate a few large effect regions are important for BYDV tolerance in IL86-1156 and IL86-6404. The markers that were found in association with these QTL ca…
author: Foresman, Bradley
language: en
keywords: spring oats, winter wheat, barley yellow dwarf virus (BYDV), Blue Yellow Dwarf (BYD), quantitative trait loci (QTL), selection methods, Single nucleotide polymorphism (SNP)
date published: 2014-05-30T16:53:33Z
date modified: 2026-07-22T22:25:38Z
provider: University of Illinois - Urbana-Champaign
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Illinois at Urbana-Champaign

PropertyValue
property ID: Handle
value: http://hdl.handle.net/2142/49637