[Progress in the biotechnology of legume forage plants].

As important forage crops,legume forage plants can play an important role in improving natural environment, maintenins water and soil. With development of molecular biology and improvement of plant transformation techniques,molecular breeding of legume forage plants by biotechnology is possible. This review summarized recent progress on improvement of several forage crops,including improvement of nutrient quality, increase of biomass,enhancement of the assimilation and efficient absorb of nutrient element, and enhancement of abiotic and biotic stress resistance.