[1]Animal Husbandry Pasture and Green Agriculture Institute of Gansu Academy of Agricultural Sciences;
Lanzhou;
Gansu 730070;
China;
[2]Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions;
Northwest Institute of Eco-Environment and Resources;
Chinese Academy of Sciences;
Lanzhou;
Gansu 730000;
China;
[2]Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions;
Northwest Institute of Eco-Environment and Resources;
Chinese Academy of Sciences;
Lanzhou;
Gansu 730000;
China;
Braya humilis; positive selection; Ka/Ks; mitochondria gene variation; NADH-dehydrogenase subunit 6;