School of Computer Science and Engineering, South China University of Technology, Guangdong, China. hmcai@scut.edu.cn.|School of Computer Science and Engineering, South China University of Technology, Guangdong, China. hmcai@scut.edu.cn.|School of Computer Science and Engineering, South China University of Technology, Guangdong, China. hmcai@scut.edu.cn.|School of Computer Science and Engineering, South China University of Technology, Guangdong, China. hmcai@scut.edu.cn.|School of Computer Science and Engineering, South China University of Technology, Guangdong, China. hmcai@scut.edu.cn.|Agrogenomics Research Center, National Institute of Agrobiological Sciences, 2-1-2, Kannondai, Tsukuba, Ibaraki 305-8602, Japan. miyao@affrc.go.jp.