Mature somatic embroies isolated from seeds were inoculated on the mediums with different 2,4-D concentration to induce calli,and the results showed that 2.5 mg/L2,4-D was the optimium auxin concentration on calli induction. Meanwhile,the contents of intrinsic hormones, such as GA3(gibberellins),ZT(zeatin),IAA(indole-3-acetic and),ABA(abscisic acid),IBA(indole butyric acid) in calli and seedlings, were measured by reversed-phase HPLC,and the results were that the contents of total intrinsic hormones in EC were more than those in NEC,and the p...