Quantitative trait loci analysis for root traits in synthetic hexaploid wheat under drought stress conditions oleh Rui-xuan LIU, Fang-kun WU, Xin YI, Yu LIN, Zhi-qiang WANG, Shi-hang LIU, Mei DENG, Jian MA, Yu-ming WEI, You-liang ZHENG, Ya-xi LIU