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Tibet is one of the centers of domestication of cultivated barley

journal contribution
posted on 2023-05-17, 13:25 authored by Dai, F, Nevo, E, Wu, D, Comadran, J, Meixue ZhouMeixue Zhou, Qui, L, Chen, Z, Beiles, A, Chen, G, Zang, G
The Near East Fertile Crescent is well recognized as a primary center of barley origin, diversity, and domestication. A large number of wild barleys have been collected from the Tibetan Plateau, which is characterized by an extreme environment. We used genome-wide diversity array technology markers to analyze the genotypic division between wild barley from the Near East and Tibet. Our results confirmed the existence of Tibetan wild barley and suggested that the split between the wild barleys in the Near East and those in Tibet occurred around 2.76 million years ago (Mya). To test the concept of polyphyletic domestication of barley, we characterized a set of worldwide cultivated barley. Some Chinese hulless and six-rowed barleys showed a close relationship with Tibetan wild barley but showed no common ancestor with other cultivated barley. Our data support the concept of polyphyletic domestication of cultivated barley and indicate that the Tibetan Plateau and its vicinity is one of the centers of domestication of cultivated barley. The current results may be highly significant in exploring the elite germplasm for barley breeding, especially against cold and drought stresses.

History

Publication title

PNAS

Volume

109

Issue

42

Pagination

16969-16973

ISSN

0027-8424

Department/School

Tasmanian Institute of Agriculture (TIA)

Publisher

Natl Acad Sciences

Place of publication

2101 Constitution Ave Nw, Washington, USA, Dc, 20418

Rights statement

Copyright 2012 Natonal Academy of Sciences

Repository Status

  • Restricted

Socio-economic Objectives

Barley

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