pln10(2)_plants10020211.pdf 2.82 MB
Mahjoob, Mazin Mahjoob Mohamed United Graduate School of Agricultural Sciences, Tottori University / Agricultural Research Corporation, Wheat Research Program
Gorafi, Yasir Serag Alnor Agricultural Research Corporation, Wheat Research Program / Arid Land Research Center, Tottori University
Kamal, Nasrein Mohamed Agricultural Research Corporation, Wheat Research Program / Arid Land Research Center, Tottori University
Tahir, Izzat Sidahmed Ali Agricultural Research Corporation, Wheat Research Program
Matsuoka, Yoshihiro Department of Bioscience, Fukui Prefectural University
Aegilops tauschii, the D-genome donor of bread wheat, is a storehouse of genetic diversity that can be used for wheat improvement. This species consists of two main lineages (TauL1 and TauL2) and one minor lineage (TauL3). Its morpho-physiological diversity is large, with adaptations to a wide ecological range. Identification of allelic diversity in Ae. tauschii is of utmost importance for efficient breeding and widening of the genetic base of wheat. This study aimed at identifying markers or genes associated with morpho-physiological traits in Ae. tauschii, and at understanding the difference in genetic diversity between the two main lineages. We performed genome-wide association studies of 11 morpho-physiological traits of 343 Ae. tauschii accessions representing the entire range of habitats using 34,829 DArTseq markers. We observed a wide range of morpho-physiological variation among all accessions. We identified 23 marker–trait associations (MTAs) in all accessions, 15 specific to TauL1 and eight specific to TauL2, suggesting independent evolution in each lineage. Some of the MTAs could be novel and have not been reported in bread wheat. The markers or genes identified in this study will help reveal the genes controlling the morpho-physiological traits in Ae. tauschii, and thus in bread wheat even if the plant morphology is different.
(C) 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Mahjoob Mazin Mahjoob Mohamed, Gorafi Yasir Serag Alnor, Kamal Nasrein Mohamed, et al. Genome-Wide Association Study of Morpho-Physiological Traits in Aegilops tauschii to Broaden Wheat Genetic Diversity. PLANTS-BASEL. 2021. 10(2). doi:10.3390/plants10020211
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