4Houyuan Lu,Jianping Zhang,Kam-biu Liu,Naiqin Wu,Yumei Li,Kunshu Zhou,Maolin Ye,Tianyu Zhang,Hai-jiang Zhang,Xiaoyan Yang,Licheng Shen,Deke Xu,Quan Li.Earliest domestication of common millet(Panicummiliaceum)in East Asia extended to 10 000 years ago [J].Proceedings of the National Academy of Sciences of the Unit-ed States of America,2009,106:7367-7372.