基金supported by the National Natural Science Foundation of China (31772511)Guizhou Science and Technology Cooperation Project(QianKeHe LH Zi [2016]7214)+1 种基金Earmarked Fund for Construction of the Key Laboratory for Conservation and Innovation of Buckwheat Germplasm in Guizhou(QianJiaoHe KY Zi [2017] 002)the Doctoral Research Project of Guizhou Normal University