t. strain LBA4404 carrying antibiotic-resistance gene and betaine synthetase gene. 48 Km resistant shoots transformed with CMO gene and 6 hygromycin resistant shoots transformed with BADH gene were obtained.

• 通过根癌农杆菌介导的叶片转化法，进行了甜菜碱合成酶基因的遗传转化研究，获得了48株转CMO基因及6株转BADH基因的抗生素抗性植株。