Sufficient food supply is critically important to humans,and food security will be particularly challenging in view of the evergrowing world population,decreasing arable cropland,and global warming.To meet the challenges,most crop geneticists think it will be necessary to enrich the cultivated gene pool for breeding programs,and thus equally important to increase our understanding of the underlying genetic and molecular mechanism for grain yield.However,crop yield is a complex trait that is controlled simultaneously by multiple genes (i.e.,quantitative trait loci ”QTLs”) and heavily influenced by the surrounding environment;hence,to dissect such a complex trait into component contributory traits is necessary.
My research is financially supported by grants from the Training Program of the Major Research Plan of the National Natural Science Foundation of Chinagrant 91435113;the Chinese Academy of ScienceXDA08020108-3