Breeding and seed production method of disease-resistant cabbage

Abstract

The invention relates to a method for breeding cabbage and producing seeds, in particular to a method for breeding disease resistant cabbage and producing seeds, which belongs to the technical field of plant breeding. In the invention, environment conditions for arousing diseases easily are created in the breeding stage of cabbage so as to breed high-temperature-resistance, high-humidity-resistance and high-disease-resistance hybrid seeds. Compared with the conventional breeding method, passive quality detection is converted into high-quality seed screening and the controllability is high. Inaspect of disease identification, the method is more complete, more accurate, simpler, more convenient and easier to implement than a manual inoculation method.

Description

technical field [0001] The invention relates to a breeding and seed production method of cabbage, in particular to a breeding and seed production method of disease-resistant cabbage, belonging to the technical field of plant breeding and seed production. Background technique [0002] Cabbage is an important vegetable widely grown in various parts of our country, and plays an important role in vegetable cultivation and supply. So far, although my country's cabbage disease-resistant breeding has made great progress and remarkable results, there is still a certain gap in terms of current vegetable production and market demand, and compared with the advanced technology of cabbage genetics and breeding in developed countries. . In recent years, with the change of consumption demand, the area of ​​protected cultivation and off-season cultivation has been expanding year by year, which puts forward higher requirements for cabbage varieties. For example, in terms of disease resistan...

AI Technical Summary

Problems solved by technology

Since the comparison, identification and screening of offspring populations in the breeding process are carried out under open-field cultivation conditions, although under natural conditions, there are many and complex types of pathogens, and cabbage materials are easily infected by various pathogens, the occurrence and severity of diseases are still related to The temperature and humidity conditions are closely related, so there are problems such as stress resistance, disease resistance, and quality traits under open field cultivation conditions.

Although there is also an artificial inoculation method at the seedling stage to identify the disease resistance of cabbage materials, this method is not only labor-intensive and cumbersome, but often can only be inoculated with one or two diseases, which can treat the symptoms but not the root cause. Inoculation has only been studied and utilized for the combined identification of resistance to three diseases: turnip mosaic virus (TuMV), cucumber mosaic virus (CMV) and black rot

Moreover, the disease resistance performance of artificial inoculation is often affected by the inoculation method, pathogen concentration, temperature and humidity, and seedling age, and sometimes cannot accurately reflect the disease resistance at the adult plant stage (reference: Li Shude, editor-in-chief. Chinese main vegetable disease-resistant breeding Progress [C]. Beijing: Science Press, 1995. 613)

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