Genome-Wide Association Mapping for Tolerance to Preharvest Sprouting and Low Falling Numbers in Wheat

Frontiers in Plant Science
Shantel A MartinezCamille M Steber

Abstract

Preharvest sprouting (PHS), the germination of grain on the mother plant under cool and wet conditions, is a recurring problem for wheat farmers worldwide. α-amylase enzyme produced during PHS degrades starch resulting in baked good with poor end-use quality. The Hagberg-Perten Falling Number (FN) test is used to measure this problem in the wheat industry, and determines how much a farmer's wheat is discounted for PHS damage. PHS tolerance is associated with higher grain dormancy. Thus, breeding programs use germination-based assays such as the spike-wetting test to measure PHS susceptibility. Association mapping identified loci associated with PHS tolerance in U.S. Pacific Northwest germplasm based both on FN and on spike-wetting test data. The study was performed using a panel of 469 white winter wheat cultivars and elite breeding lines grown in six Washington state environments, and genotyped for 15,229 polymorphic markers using the 90k SNP Illumina iSelect array. Marker-trait associations were identified using the FarmCPU R package. Principal component analysis was directly and a kinship matrix was indirectly used to account for population structure. Nine loci were associated with FN and 34 loci associated with PHS based on...Continue Reading

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Citations

Jul 19, 2019·PloS One·Fernanda Zatti BarretoMonalisa Sampaio Carneiro
Jul 22, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yulei ZhuChuanxi Ma
Jan 30, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shantel A MartinezCamille M Steber
Sep 25, 2018·Frontiers in Plant Science·Marcus NewberryJean-Philippe F Ral
Oct 18, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shubing LiuGuihua Bai
Mar 7, 2021·Plants·Emma M McGintyAmber L Hauvermale
Jul 28, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jin ShiDabing Zhang
Aug 2, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kassa SemagnDean Spaner

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Methods Mentioned

BETA
ELISA

Software Mentioned

lme4
R
GenomeStudio
GAPIT R
SAS
JMP
BEAGLE
STAT

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