1. Applied Plant Genomics Laboratory, Crop Genomics and Bioinformatics Center and National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Jiangsu 210095, China (P.X., Y.X., H.Z., H.X., Z.Z., C.Z., L.Z., Z.M.); and Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China (P.X.)