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Barley (Hordeum vulgare L.) is an important cereal crop around the world and is of major importance to many countries [1][2]. In terms of global acreage and production, barley is the fourth major cereal crop after wheat, rice and corn globally [3], and is regarded as one of the most tolerant crops for drought and alkaline soils, and it has the highest water-use efficiency compared to other cereal crops, but it is less tolerant to acidic soils [4][5][6][7].Cultivation conditions of barley genetic diversity are essential for adapting to future environmental changes,