Regeneration of foreign genes co-transformed plants ofMedicago sativa L byAgrobacterium rhizogenes

Gene encoding sulphur amino acid-rich protein (HNP) and rol genes were transferred into Medicago sativa L (alfalfa) mediated by Agrobacterium tumafeciens. Regeneration of trans-genie plants was induced successfully from hairy root tissue of cotyledon in alfalfa. Cotyledon tissues were an ideally transformed recipient. There was a negative correlation between age of hairy roots and embryogenesis frequency in alfalfa. Production of co-transformed plants with greater yield and super quality was important for development of new alfalfa varieties.     

紫花苜蓿外源基因共转化植株的再生

高含硫氨基酸蛋白(HNP)基因和发根(rol)基因由发根农杆菌介导转入紫花苜蓿, 成功地从子叶毛根组织诱导转基因植株再生. 子叶是较理想的转化受体, 毛根年龄与紫花苜蓿体细胞胚分化频率呈负相关. 共转化植株高产、优质性状的产生对紫花苜蓿新品种的培育有重要意义.