J. Exp. Bot. J. Exp. Bot. Genomic and evolutionary evidence for drought adaptation of allopolyploid Brachypodium hybridum Wang Yuanyuan Chen Guang Zeng Fanrong Deng Fenglin Yang Zujun Han Zhigang Xu Shengchun Nevo Eviatar Catalán Pilar Universidad de Zaragoza Chen Zhong-Hua 2025 research-article