Somatic embryogenesis and plant regeneration were induced by higher concentrations of auxins with immature cotyledon, leaf, cotyledonary node and hypocotyl of fifty-five genotypes from Northeast area and abroad in soybean. The factors affecting somatic embryogenesis were investigated such as genotypes, category of explants, kinds and concentrations of anxins, and time of pretreatment with lower temperature. The secondary embryos of soybean were induced and correlative factors with proliferation, germination...