Resistance to powdery mildew in the pea cultivar Xucai 1 is conferred by the gene er1
Suli Sun, Zhongyi Wang, Haining Fu, Canxing Duan, Xiaoming Wang, Zhendong Zhu
The Crop Journal . 2015, (6): 489 -499 .  DOI: 10.1016/j.cj.2015.07.006