基金This study was financially supported by the Fujian Natural Science Foundation (2009J05050)the National High Technology Research and Develop-ment Program of China (863 Program) (2007AA100701)+2 种基金the Program of Introducing International Super Agricultural Science and Technology (948 Program) (2006-G37)National Science and Technology Project File of Science and Technology Commission, Fujian Science Department (F2007AA100701)the earmarked fund for Modern Agro-industry Technology Research System