EUCOMMIA ulmoides is not only a famous medicinal plant,but also a most promising rubber-source plant in the temperate zone.All the individuals present in this species are diploid(2n=2x=34),and the obj
THE responses of plant photosynthesis to elevated CO_2 could be divided into short-term re-sponse and long-term response or acclimation.In the short-term response,photosynthesiscan be enhanced at the