国家"973"项目2012CB518805;国家公益性行业科研专项200903027;江苏省农业三新工程No.SXGC2012402;江苏高校优势学科建设工程资助项目联合资助Supported by the National Basic Research and Development Program of China2012CB518805;the National Department Public Benefit Research Foundation200903027;the Jiangsu Three Novel Engineering Foundation of Agriculture No.SXGC2012402;the Priority Academic Program Development of Jiangsu Higher Education Institutions