A genome-wide association study reveals novel elite allelic variations in seed oil content of Brassica napus

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Sheng LiuYongming Zhou

Abstract

A set of additive loci for seed oil content were identified using association mapping and one of the novel loci on the chromosome A5 was validated by linkage mapping. Increasing seed oil content is one of the most important goals in the breeding of oilseed crops including Brassica napus, yet the genetic basis for variations in this important trait remains unclear. By genome-wide association study of seed oil content using 521 B. napus accessions genotyped with the Brassica 60K SNP array, we identified 50 loci significantly associated with seed oil content using three statistical models, the general linear model, the mixed linear model and the Anderson-Darling test. Together, the identified loci could explain approximately 80 % of the total phenotypic variance, and 29 of these loci have not been reported previously. Furthermore, a novel locus on the chromosome A5 that could increase 1.5-1.7 % of seed oil content was validated in an independent bi-parental linkage population. Haplotype analysis showed that the favorable alleles for seed oil content exhibit cumulative effects. Our results thus provide valuable information for understanding the genetic control of seed oil content in B. napus and may facilitate marker-based breeding...Continue Reading

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Citations

Oct 9, 2016·Plant Science : an International Journal of Experimental Plant Biology·Fengming SunHanzhong Wang
Dec 14, 2017·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Qinghong ZhouYingjin Huang
Jun 7, 2018·The Plant Journal : for Cell and Molecular Biology·Sheila McCormick
Feb 3, 2018·Molecular Genetics and Genomics : MGG·Cong HuangZhongxu Lin
Aug 18, 2018·Frontiers in Plant Science·Nadia RaboanatahiryMaoteng Li
Apr 22, 2017·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Xiaohua WangLei Shi
Apr 13, 2019·BMC Plant Biology·Panhong DaiXiongming Du
Feb 23, 2020·Frontiers in Plant Science·Shaoping LuLiang Guo
Dec 15, 2018·The Plant Journal : for Cell and Molecular Biology·Armin SchebenDavid Edwards
Jul 20, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Wenhao ShenJinxing Tu
Jan 22, 2019·Frontiers in Plant Science·Mingwei GuanCunmin Qu

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