Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (31): 14-22.doi: 10.11924/j.issn.1000-6850.casb2023-0903

Previous Articles     Next Articles

Application of Flow Cytometry in Ploidy Breeding of Chinese Cabbage

MENG Chuan(), WANG Qingfeng, WU Fang, MA Lei, MU Jingui, WANG Yuhai, WANG Mingqiu(), LIU Xiaodong()   

  1. Institute of Cash Crops Research, Hebei Academy of Agricultural and Forestry Sciences/Hebei Vegetable Engineering and Technology Centre, Shijiazhuang 050051
  • Received:2023-12-29 Revised:2024-07-12 Online:2024-11-05 Published:2024-11-04

Abstract:

In order to establish a set of flow cytometry application methods that can rapidly and accurately identify the ploidy of tetraploid Chinese cabbage, 12 vegetable crops with known ploidy were used to verify the results of ploidy detection by flow cytometry. At the same time, diploid Chinese cabbage ‘Jibai 4’ and tetraploid Chinese cabbage ‘Duowei 462’, ‘Duo 505’ and ‘Duoyu 2’ were selected as materials, and the ploidy identification was carried out in different periods and parts of the plant, so as to screen out the suitable sampling periods and parts. The results showed that 12 vegetables with known ploidy verified the accuracy and reliability of the flow cytometry results used in this experiment; the ploidy detection results of young cotyledons taken from ‘Jibai 4’, ‘Duowei 462’, ‘Duo 505’ and ‘Duoyu 2’ during the cotyledon stage were consistent with known ploidy. Therefore, the young cotyledons at the cotyledon stage are the best time and place for ploidy sampling in Chinese cabbage.

Key words: Chinese cabbage, flow cytometry, tetraploid, cotyledon stage, ploidy identification