Fine mapping of the powdery mildew resistance gene PmXQ-0508 in bread wheat
Zejun Qian, Guohao Han, Ningning Yu, Cheng Liu, Ran Han, Paula E. Jameson, Jiaojiao Wang, Ya Zhao, Bei Xiao, Ruishan Liu, Jiadong Zhang, Yuli Jin, Hongjie Li, Pengtao Ma
Abstract
In a wheat breeding line XQ-0508 showing consistent resistance to powdery mildew disease, a recessive gene, designated PmXQ-0508, was identified and mapped to a distal region on chromosome arm 2BS. Of three resistance-associated genes in this region, one encoding a protein kinase was selected as the primary candidate for PmXQ-0508. Ten closely linked DNA markers developed in the study could be used for marker-assisted selection for powdery-mildew resistance in breeding programs.
Topics & Concepts
Powdery mildewBiologyGeneChromosomePlant disease resistanceGeneticsAgronomyWheat and Barley Genetics and PathologyPlant Disease Resistance and GeneticsPlant pathogens and resistance mechanisms