Research Progress on Alfalfa (Medicago sativa L.) Adaptability under Drought Stress
Alfalfa (Medicago sativa L.) is one of the most important leguminous forage in China,and distributed most widely in the world.Because of Its high nutritional value,large biomass and strong reproducibility and improved soil green manure plants,it is a kind of green manure plant capable of improving soil and known as "the king of forage".Alfalfa has strong adaptability under drought stress,and could adapt drought conditions through its physiological metabolism,structure development and morphology construction.Drought resistance in alfalfa is always a hot research subject of forage,and the research has been gradually developed from the morphological level to more-deeply physiological,biochemical and molecular biology fields,and has made many valuable research achievements.