Expression of special genes resistant to powdery mildew (Blumeria graminis f. sp. tritici) in wheat germplasm N9820 WU Jin-Hua1, MA Zhi-ying1, Zhang Xi-ping2, JI Wan-quan3(1College of Agronomy, Agricultural University of , Baoding 071001,China; 2Institute of Urban and Rural Construction, Agricultural University of Hebei, Baoding 071001, China; 3College Expression of Special Genes Resistant to Powdery Mildew (Blumeria graminis f. sp. tritici) in Wheat Germplasm N9436 Expression Pattern of Special Genes Resistant to Powdery Mildew (Blumeria graminis f. sp. tritici) in SSH-cDNA Library of Wheat