7Ma L Q, Kenneth M K,Tu C,et al.A Fern That Hyperacoumulates Arsenic [J]. Nature, 2001,409(6820) :579.
8LI H J,PU X B,ZHANG J F,et al.Studies on enhancing yield of embryos in microspore culture of Brassica napus L.[J].Agricultural Science & Technology,2009,10(4):37-40.