Genome-wide association study for grain yield and related traits in elite wheat varieties and advanced lines using SNP markers

Autor: Yulei Zhu, Shengxing Wang, Genlou Sun, Zhang Haiping, Chang Cheng, De-Xin Zhang, Heng Zhang, Liu Peng, Chuanxi Ma, Shao Hui, Lu Jie, Jian-Bang Hu, Xianchun Xia
Jazyk: angličtina
Rok vydání: 2017
Předmět:
0106 biological sciences
0301 basic medicine
Population genetics
lcsh:Medicine
01 natural sciences
Cleaved amplified polymorphic sequence
lcsh:Science
Triticum
Genetics
education.field_of_study
Principal Component Analysis
Multidisciplinary
Eukaryota
food and beverages
Genomics
Plants
Horticulture
Phenotypes
Phenotype
Seeds
Wheat
Research Article
Genetic Markers
Population
Quantitative Trait Loci
Locus (genetics)
Quantitative trait locus
Biology
Research and Analysis Methods
Polymorphism
Single Nucleotide
Chromosomes
Plant
Molecular Genetics
03 medical and health sciences
Quantitative Trait
Heritable
Gene mapping
Genome-Wide Association Studies
Grasses
Allele
education
Molecular Biology Techniques
Molecular Biology
Alleles
Evolutionary Biology
Polymorphism
Genetic
Base Sequence
Models
Genetic
Population Biology
Gene Mapping
lcsh:R
Organisms
Reproducibility of Results
Biology and Life Sciences
Computational Biology
Human Genetics
Genome Analysis
030104 developmental biology
Genetics
Population
Genetic marker
Genetic Loci
lcsh:Q
Population Genetics
010606 plant biology & botany
Genome-Wide Association Study
Zdroj: PLoS ONE, Vol 12, Iss 11, p e0188662 (2017)
PLoS ONE
ISSN: 1932-6203
Popis: Genetic improvement of grain yield is always an important objective in wheat breeding. Here, a genome-wide association study was conducted to parse the complex genetic composition of yield-related traits of 105 elite wheat varieties (lines) using the Wheat 90K Illumina iSelect SNP array. Nine yield-related traits, including maximum number of shoots per square meter (MSN), effective number of spikes per square meter (ESN), percentage of effective spike (PES), number of kernels per spike (KPS), thousand-kernel weight (TKW), the ratio of kernel length/kernel width (RLW), leaf-area index (LAI), plant height (PH), and grain yield (GY), were evaluated across four environments. Twenty four highly significant marker-trait associations (MTAs) (P < 0.001) were identified for nine yield-related traits on chromosomes 1A, 1D, 2A (2), 3B, 4A (2), 4B, 5A (4), 5B (4), 5D, 6B (2), 7A (2), and 7B (3), explaining 10.86–20.27% of the phenotypic variations. Of these, four major loci were identified in more than three environments, including one locus for RLW (6B), one locus for TKW (7A), and two loci for PH (7B). A cleaved amplified polymorphic sequence (CAPS) marker Td99211 for TKW on chromosome 5A was developed and validated in both a natural population composed of 372 wheat varieties (lines) and a RIL population derived from the cross of Yangxiaomai × Zhongyou 9507. The CAPS marker developed can be directly used for marker-assisted selection in wheat breeding, and the major MTAs identified can provide useful information for fine-mapping of the target genes in future studies.
Databáze: OpenAIRE
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