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Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments

BACKGROUND: Grain yield is a key economic driver of successful wheat production. Due to its complex nature, little is known regarding its genetic control. The goal of this study was to identify important quantitative trait loci (QTL) directly and indirectly affecting grain yield using doubled haploi...

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Autores principales: Wu, Xianshan, Chang, Xiaoping, Jing, Ruilian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3281929/
https://www.ncbi.nlm.nih.gov/pubmed/22363596
http://dx.doi.org/10.1371/journal.pone.0031249
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author Wu, Xianshan
Chang, Xiaoping
Jing, Ruilian
author_facet Wu, Xianshan
Chang, Xiaoping
Jing, Ruilian
author_sort Wu, Xianshan
collection PubMed
description BACKGROUND: Grain yield is a key economic driver of successful wheat production. Due to its complex nature, little is known regarding its genetic control. The goal of this study was to identify important quantitative trait loci (QTL) directly and indirectly affecting grain yield using doubled haploid lines derived from a cross between Hanxuan 10 and Lumai 14. METHODOLOGY/PRINCIPAL FINDINGS: Ten yield-associated traits, including yield per plant (YP), number of spikes per plant (NSP), number of grains per spike (NGS), one-thousand grain weight (TGW), total number of spikelets per spike (TNSS), number of sterile spikelets per spike (NSSS), proportion of fertile spikelets per spike (PFSS), spike length (SL), density of spikelets per spike (DSS) and plant height (PH), were assessed across 14 (for YP) to 23 (for TGW) year × location × water regime environments in China. Then, the genetic effects were partitioned into additive main effects (a), epistatic main effects (aa) and their environment interaction effects (ae and aae) by using composite interval mapping in a mixed linear model. CONCLUSIONS/SIGNIFICANCE: Twelve (YP) to 33 (PH) QTLs were identified on all 21 chromosomes except 6D. QTLs were more frequently observed on chromosomes 1B, 2B, 2D, 5A and 6B, and were concentrated in a few regions on individual chromosomes, exemplified by three striking yield-related QTL clusters on chromosomes 2B, 1B and 4B that explained the correlations between YP and other traits. The additive main-effect QTLs contributed more phenotypic variation than the epistasis and environmental interaction. Consistent with agronomic analyses, a group of progeny derived by selecting TGW and NGS, with higher grain yield, had an increased frequency of QTL for high YP, NGS, TGW, TNSS, PFSS, SL, PH and fewer NSSS, when compared to low yielding progeny. This indicated that it is feasible by marker-assisted selection to facilitate wheat production.
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spelling pubmed-32819292012-02-23 Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments Wu, Xianshan Chang, Xiaoping Jing, Ruilian PLoS One Research Article BACKGROUND: Grain yield is a key economic driver of successful wheat production. Due to its complex nature, little is known regarding its genetic control. The goal of this study was to identify important quantitative trait loci (QTL) directly and indirectly affecting grain yield using doubled haploid lines derived from a cross between Hanxuan 10 and Lumai 14. METHODOLOGY/PRINCIPAL FINDINGS: Ten yield-associated traits, including yield per plant (YP), number of spikes per plant (NSP), number of grains per spike (NGS), one-thousand grain weight (TGW), total number of spikelets per spike (TNSS), number of sterile spikelets per spike (NSSS), proportion of fertile spikelets per spike (PFSS), spike length (SL), density of spikelets per spike (DSS) and plant height (PH), were assessed across 14 (for YP) to 23 (for TGW) year × location × water regime environments in China. Then, the genetic effects were partitioned into additive main effects (a), epistatic main effects (aa) and their environment interaction effects (ae and aae) by using composite interval mapping in a mixed linear model. CONCLUSIONS/SIGNIFICANCE: Twelve (YP) to 33 (PH) QTLs were identified on all 21 chromosomes except 6D. QTLs were more frequently observed on chromosomes 1B, 2B, 2D, 5A and 6B, and were concentrated in a few regions on individual chromosomes, exemplified by three striking yield-related QTL clusters on chromosomes 2B, 1B and 4B that explained the correlations between YP and other traits. The additive main-effect QTLs contributed more phenotypic variation than the epistasis and environmental interaction. Consistent with agronomic analyses, a group of progeny derived by selecting TGW and NGS, with higher grain yield, had an increased frequency of QTL for high YP, NGS, TGW, TNSS, PFSS, SL, PH and fewer NSSS, when compared to low yielding progeny. This indicated that it is feasible by marker-assisted selection to facilitate wheat production. Public Library of Science 2012-02-17 /pmc/articles/PMC3281929/ /pubmed/22363596 http://dx.doi.org/10.1371/journal.pone.0031249 Text en Wu et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Wu, Xianshan
Chang, Xiaoping
Jing, Ruilian
Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title_full Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title_fullStr Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title_full_unstemmed Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title_short Genetic Insight into Yield-Associated Traits of Wheat Grown in Multiple Rain-Fed Environments
title_sort genetic insight into yield-associated traits of wheat grown in multiple rain-fed environments
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3281929/
https://www.ncbi.nlm.nih.gov/pubmed/22363596
http://dx.doi.org/10.1371/journal.pone.0031249
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