High-density genotyping of the A.E. Watkins Collection of hexaploid landraces identifies a large molecular diversity compared to elite bread wheat.

Plant Biotechnology Journal
Mark WinfieldKeith J Edwards

Abstract

The importance of wheat as a food crop makes it a major target for agricultural improvements. As one of the most widely grown cereal grains, together with maize and rice, wheat is the leading provider of calories in the global diet, constituting 29% of global cereal production in 2015. In the last few decades, however, yields have plateaued, suggesting that the green revolution, at least for wheat, might have run its course and that new sources of genetic variation are urgently required. The overall aim of our work was to identify novel variation that may then be used to enable the breeding process. As landraces are a potential source of such diversity, here we have characterized the A.E. Watkins Collection alongside a collection of elite accessions using two complementary high-density and high-throughput genotyping platforms. While our results show the importance of using the appropriate SNP collection to compare diverse accessions, they also show that the Watkins Collection contains a substantial amount of novel genetic diversity which has either not been captured in current breeding programmes or which has been lost through previous selection pressures. As a consequence of our analysis, we have identified a number of accessi...Continue Reading

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Citations

Sep 12, 2019·Plant, Cell & Environment·Jordan ValenteClaire Prigent-Combaret
Apr 30, 2019·Frontiers in Plant Science·Arantxa MonteagudoErnesto Igartua
Dec 15, 2018·The Plant Journal : for Cell and Molecular Biology·Armin SchebenDavid Edwards
May 30, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jindong LiuXianchun Xia
Apr 17, 2018·Briefings in Bioinformatics·Armin SchebenDavid Edwards
Jul 8, 2020·International Journal of Molecular Sciences·Irina N LeonovaElena A Salina
Nov 27, 2020·Communications Biology·Jemima BrintonCristobal Uauy
Jul 3, 2021·Plants·Daniela MaroneGrazia M Borrelli
Apr 15, 2021·Genome Génome / Conseil National De Recherches Canada·Xiu YangHouyang Kang
Jul 22, 2021·Plant Biotechnology Journal·Michael C U Hammond-KosackKim E Hammond-Kosack

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Methods Mentioned

BETA
genotyping
nucleic acid extraction
PCR
Assay

Software Mentioned

BLASTN
[UNK] CNV Summary Tools
Affymetrix
R Core
GTC
STRUCTURE HARVESTER
R
CLUMPAK
Chapman
STRUCTURE

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