Abstract: The double monosomic addition lines of Chinese cabbage with No.1 and 6 chromosomes from cabbage were used for generating Chinese cabbage–cabbage disomic alien addition line. The results showed as follows：（1）Three 2n = 22 plants were screened from the 38 plants of the double monosomic addition lines selfing progeny.（2）Through karyotypic analysis and SSR identification，the three 2n = 22 plants were assigned as Chinese cabbage disomic addition line with No.1 chromosome from cabbage.（3）In the vegetative growth period，there were no significant differences between the disomic addition line and diploid Chinese cabbage，however they had some characteristics of cabbage in reproductive growth stage.（4）The observation of meiotic behavior showed that the rate of 11 bivalents was 90.10% at diakinesis，and the rate of chromosome distribution with 11-11-11-11 was 83.50% at anaphaseⅡ，which proved that the disomic addition line have a high genetic stability. 　　

Key words: Chinese cabbage, cabbage, disomic alien addition line, meiosis, SSR