The Breeding Projects Foundation of the Education Department of Guangdong Province(LYM08068);Guangzhou City Science and Technology Plan Project(2009J1-C421-1)
Supported by the National Natural Science Foundation ofChina (No .60478010);Science and Technology Committeeof Guangdong Province ( Nos . 2003c103021 ,2004B10301014 and 04105406 ) ;Science andTechnology Bureau of Guangzhou ( Nos .200J1-C0031 and2004J1-C0226)