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Genome‐wide association study reveals loci associated with seed longevity in common wheat ( Triticum aestivum L.)
Author(s) -
Zuo Jing Hong,
Chen Feng Ying,
Li Xiao Ying,
Xia Xian Chun,
Cao Hong,
Liu Jin Dong,
Liu Yong Xiu
Publication year - 2020
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12784
Subject(s) - longevity , biology , common wheat , quantitative trait locus , genetics , genome wide association study , germination , seed dormancy , allele , gene , botany , dormancy , genotype , single nucleotide polymorphism , chromosome
Seed longevity could significantly determine seed regeneration cycle and greatly affect wheat production. With the 90 K chip assays, a genome‐wide association study was performed to identify seed longevity‐related markers and loci in common wheat. Seed germination ratios (GR) under artificially ageing of 166 wheat accessions across three environments were evaluated to assess seed longevity. Totally, 23 longevity‐related loci were identified in the study, explaining 6.7%–11.4% of the phenotypic variations. Of these, QlgGR.cas‐1A and QlgGR.cas‐2B.2 were deemed as stable loci associated with wheat seed longevity. Fifteen loci were found overlapped with known quantitative trait loci or genes. Besides, QlgGR.cas‐1A , QlgGR.cas‐2B.2 , QlgGR.cas‐3D.1 , QlgGR.cas‐3D.2 , QlgGR.cas‐4A.2 , QlgGR.cas‐5A.1 , QlgGR.cas‐5A.2 and QlgGR.cas‐6A.1 were colocated with seed dormancy‐related loci. Significant additive effects were obtained for seed longevity by pyramiding favourable alleles. Several candidate genes were found involved in signal transduction and stress resistance pathways by sequencing analysis of significantly longevity‐related molecular markers. These results might provide new sights into the genetic architecture of seed longevity.