State Key Laboratory for Crop Genetics & Germplasm Enhancement/Jiangsu Provincial Center of Plant Gene Engineering/College of Agriculture Nanjing Agricultural University Nanjing 210095 P.R.China;
Nanchong Academy of Agricultural Sciences Nanchong 637000 P.R.China;
Key Laboratory of Plant Functional Genomics Ministry of Education/Co?Innovation Center for Modern Production Technology of Grain Crops Yangzhou University Yangzhou 225009 P.R.China;