Advances on physiological mechanisms of alfalfa resistant to salt and drought

Alfalfa acts the very important roles in the agriculture, animal husbandry, and the ecological construction in the arid and semiarid areas of northwest China. To provide the references for improving the salt and drought tolerance of alfalfa, this paper reviewed the recent results involving the physiological mechanisms of alfalfa resistant to salt and drought, and the assessment of its salt and drought tolerance.