Study on the Adaptation of Alfalfa in Yellow River Delta The Analysis of Plant Isozyme of Different Alfalfa Cultivars with Different Root Regeneration Ability Flaveria bidentis decomposition and residual body regeneration in soils Plant Tissue Culture for 8 Pagoda Tree Var ieties of Papilionoideae and Effects of Genotypes on Regeneration Ability Investigation of Regeneration and Transformation Frequencies Generated from Different Genotypes in Rice (Oryza sativa L.) Plant Tissue Culture for 8 Pagoda Tree Var ieties of Papilionoideae and Effects of Genotypes on Regeneration Ability