Supported by the National Natural Science Foundation of China(61178003,61475039);Guangdong Provincial Department of Science and Technology(2012A080304010,S2012010010115,2012A080304005);Guangzhou Municipal Department of Education(12A005S)
Project supported by the National Natural Science Foundation of China(Project 10964006);the Research Funds for the Science and Technology Innovation Team of Inner Mongolia Agricultural University(No.NDPYTD2010-7)~~