4 Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China. Electronic address: yangxins013@163.com.
5 Hubei Jinyue Agricultural Products Development Co., Ltd, Guangshui, China; Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China. Electronic address: yangch@ibcas.ac.cn.
6 Hubei Academy of Agricultural Sciences, Wuhan, 430064, China. Electronic address: jiaoch@hotmail.com.