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Research article - Peer-reviewed, 2023

Genome-Wide Association Analysis of Freezing Tolerance and Winter Hardiness in Winter Wheat of Nordic Origin

Vaitkeviciute, Gabija; Chawade, Aakash; Lillemo, Morten; Liatukas, Zilvinas; Aleliunas, Andrius; Armoniene, Rita; Hoshino, Tomoki; Ogiso-Tanaka, Eri; Somta, Prakit

Abstract

Climate change and global food security efforts are driving the need for adaptable crops in higher latitude temperate regions. To achieve this, traits linked with winter hardiness must be introduced in winter-type crops. Here, we evaluated the freezing tolerance (FT) of a panel of 160 winter wheat genotypes of Nordic origin under controlled conditions and compared the data with the winter hardiness of 74 of these genotypes from a total of five field trials at two locations in Norway. Germplasm with high FT was identified, and significant differences in FT were detected based on country of origin, release years, and culton type. FT measurements under controlled conditions significantly correlated with overwintering survival scores in the field (r <= 0.61) and were shown to be a reliable complementary high-throughput method for FT evaluation. Genome-wide association studies (GWAS) revealed five single nucleotide polymorphism (SNP) markers associated with FT under controlled conditions mapped to chromosomes 2A, 2B, 5A, 5B, and 7A. Field trials yielded 11 significant SNP markers located within or near genes, mapped to chromosomes 2B, 3B, 4A, 5B, 6B, and 7D. Candidate genes identified in this study can be introduced into the breeding programs of winter wheat in the Nordic region.

Keywords

climate change; cold acclimation; GWAS; overwintering; Triticum aestivum L.

Published in

Plants
2023, Volume: 12, number: 23, article number: 4014
Publisher: MDPI

    Sustainable Development Goals

    SDG2 Zero hunger

    UKÄ Subject classification

    Agricultural Science

    Publication identifier

    DOI: https://doi.org/10.3390/plants12234014

    Permanent link to this page (URI)

    https://res.slu.se/id/publ/127695