Journal article

Elucidation of the origin of 'agriocrithon' based on domestication genes questions the hypothesis that Tibet is one of the centers of barley domestication

Mohammad Pourkheirandish, Hiroyuki Kanamori, Jianzhong Wu, Shun Sakuma, Frank R Blattner, Takao Komatsuda

PLANT JOURNAL | WILEY | Published : 2018


Wild barley forms a two-rowed spike with a brittle rachis whereas domesticated barley has two- or six-rowed spikes with a tough rachis. Like domesticated barley, 'agriocrithon' forms a six-rowed spike; however, the spike is brittle as in wild barley, which makes the origin of agriocrithon obscure. Haplotype analysis of the Six-rowed spike 1 (vrs1) and Non-brittle rachis 1 (btr1) and 2 (btr2) genes was conducted to infer the origin of agriocrithon barley. Some agriocrithon barley accessions (eu-agriocrithon) carried Btr1 and Btr2 haplotypes that are not found in any cultivars, implying that they are directly derived from wild barley through a mutation at the vrs1 locus. Other agriocrithon bar..

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Awarded by Japanese Ministry of Agriculture, Forestry and Fisheries (Genomics for Agricultural Innovation)

Funding Acknowledgements

We are very grateful to Professor Robert McIntosh (Sydney University) for critical reading and valuable comments on an early version of this manuscript. The authors are grateful to Dr Helmut Knupffer and the Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) for providing the agriocrithon accessions. Financial support given to MP and TK by the Japanese Society for Promotion of Science, and to TK by the Japanese Ministry of Agriculture, Forestry and Fisheries (Genomics for Agricultural Innovation grant no. TRS1002) is gratefully acknowledged.