Selective breeding method for cabbage cytoplasm male sterile line

Abstract

The present invention relates to a method for selecting and breeding celery cabbage cytoplasmic male sterile line. It is characterized by that it selects natural mustard rape male sterile plant, uses high-quality celery cabbage DH line 63-5 as maintainer line, utilizes distant hybridization, continuous backcross and molecular marking auxiliary selection to obtain genetic stable celery cabbage cytoplasmic male sterile line, breeding said sterile line so as to obtain the celery cabbage cytoplasmic male sterile line CMS 63-5 for production application.

Description

technical field [0001] The invention belongs to the technical field of cruciferous vegetable breeding, and in particular relates to the breeding, breeding and utilization methods of a new cytoplasmic male sterile line of Chinese cabbage. Background technique [0002] Cytoplasmic male sterility is the most important pathway of heterosis in rapeseed. At present, there are many types of cytoplasmic male sterility reported at home and abroad. According to their different sources, they can be divided into two categories: heterologous cytoplasmic male sterility and homologous cytoplasmic male sterility: in heterologous CMS, the most useful and has begun Commercial breeding includes ogu CMS, kosena CMS and touCMS; among the homologous CMSs, the one with commercial value is mainly Polima cytoplasmic male sterile line (English abbreviation: Pol CMS, the same below). Pol CMS is the first international rapeseed cytoplasmic male sterile line with practical value discovered and recogniz...

AI Technical Summary

Problems solved by technology

However, due to the problems of low-temperature seedling yellowing and underdeveloped nectaries in the original Ogu CMS, these cytoplasmic male sterile lines have not been popularized and utilized in production so far.

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