Analysis of Primary Light Response Parameters of Machilus pauhoi from Different Provenances Adaptation of Eupatorium adenophorum photosynthetic characteristics to light intensity Characteristics of photosynthetic and transpiration of three common afforestation species in the Loess Plateau Cloning,Constructing the Over-expression Vector and Expression Analysis of CPMAX2 in Transgenic Citrange with rolABC Genes Cloning,Constructing the Over-expression Vector and Expression Analysis of CPMAX2 in Transgenic Citrange with rolABC Genes