La Trobe
1199079_Zhao,H_2022.pdf (1.51 MB)
Download file

Genome-wide association studies dissect the G × E interaction for agronomic traits in a worldwide collection of safflowers (Carthamus tinctorius L.)

Download (1.51 MB)
journal contribution
posted on 04.05.2022, 03:48 by Huanhuan ZhaoHuanhuan Zhao, KW Savin, Y Li, EJ Breen, P Maharjan, JF Tibbits, Surya KantSurya Kant, Matthew HaydenMatthew Hayden, Hans DaetwylerHans Daetwyler
Genome-wide association studies were conducted using a globally diverse safflower (Carthamus tinctorius L.) Genebank collection for grain yield (YP), days to flowering (DF), plant height (PH), 500 seed weight (SW), seed oil content (OL), and crude protein content (PR) in four environments (sites) that differed in water availability. Phenotypic variation was observed for all traits. YP exhibited low overall genetic correlations (rGoverall) across sites, while SW and OL had high rGoverall and high pairwise genetic correlations (rGij) across all pairwise sites. In total, 92 marker-trait associations (MTAs) were identified using three methods, single locus genome-wide association studies (GWAS) using a mixed linear model (MLM), the Bayesian multi-locus method (BayesR), and meta-GWAS. MTAs with large effects across all sites were detected for OL, SW, and PR, and MTAs specific for the different water stress sites were identified for all traits. Five MTAs were associated with multiple traits; 4 of 5 MTAs were variously associated with the three traits of SW, OL, and PR. This study provided insights into the phenotypic variability and genetic architecture of important safflower agronomic traits under different environments.

Funding

Open Access funding enabled and organized by CAUL and its Member Institutions This study was funded by Agriculture Victoria Research, Victoria state government, Australia.

History

Publication Date

01/04/2022

Journal

Molecular Breeding

Volume

42

Issue

4

Article Number

ARTN 24

Pagination

14p.

Publisher

Springer

ISSN

1380-3743

Rights Statement

This article is licensed under a Creative Com-mons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Crea-tive Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.