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GrainGenes Reference Report: PMB-48-615

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Reference	PMB-48-615
Title	Detection of grain protein content QTLs across environments in tetraploid wheats
Journal	Plant Molecular Biology
Year	2002
Volume	48
Pages	615-623
Author	Blanco A Pasqualone A Troccoli A Di Fonzo N Simeone R
Abstract	Summary: Grain protein content (GPC) is an important quality factor in both durum and bread wheats. GPC is considered to be a polygenic trait influenced by environmental factors and management practice. The objectives of this study were both to compare the quantitative trait loci (QTL) for GPC in a population of 65 recombinant inbred lines of tetraploid wheats evaluated in three locations for several years (eight data sets), and to investigate the genetic relationship among GPC and grain yield. QTLs were determined based on the Messapia x dicoccoides linkage map which covers 217 linked loci on the 14 chromosomes with 42 additional loci as yet unassigned to linkage groups. The map extends to 1352 cM; the average distance between adjacent markers was 6.3 cM. Seven QTLs for GPC, located on the chromosome arms 4BS, 5AL, 6AS (two loci), 6BS, 7AS and 7BS, were detected that were significant in at least one environment at P<0.001 or in at least two environments at P<0.01. One QTL was significant in all but one environment, two were significant in four or five environments, and four were significant in two out of eight environments. Six out of seven protein content QTLs had pleiotropic effects or were associated to QTLs for grain yield and explained the negative correlation among GPC and yield components. The present results support the concept that studies conducted in a single environment are likely to underestimate the number of QTLs that can influence a trait and that the phenotypic data for a quantitative trait should be collected over a range of locations to identify putative QTLs and determine their phenotypic effects
External Databases	https://doi.org/10.1023/A:1014864230933
QTL	QPro.mgb-5A [ Show all 9 ]
Trait Study	Grain protein, Messapia x T.dicoccoides, Blanco2002
Keyword	[ Hide all but 1 of 57 ] arms bread bread wheat chromosomal location chromosome chromosome arm component correlation cover data set data sets detection dicoccoides distance durum durum wheat environment environmental environmental factors genetic relationship genetic-variation grain protein grain protein content grain yield inbred line linkage linkage group linkage map locus making quality management map marker mendelian factors molecular markers polygenic population protein protein content qtl qtl mapping quality quantitative trait quantitative trait loci recombinant recombinant inbred line ri lines tetraploid tetraploid wheat trait trait loci triticum aestivum var.dicoccoides wheat winter wheat yield yield components

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