Breeding method for spring cabbage early-maturing variety resistant to premature bolting

Abstract

The invention discloses a breeding method for a spring cabbage early-maturing variety resistant to premature bolting and relates to the technical field of breeding. The breeding method for the springcabbage early-maturing variety resistant to premature bolting comprises the steps that the spring cabbage early-maturing variety resistant to premature bolting is obtained by using DH10-ZG48CMS as a female parent and DH13-20M3 as a male parent to perform hybridization and is named as early spring cabbage 1852. The DH10-ZG48CMS is obtained by hybridizing Ogura cytoplasm male sterility line and maintainer line DH10-ZG48CM of cabbage and then performing fifth-generation backcross transformation on a hybridized product. The maintainer line DH10-ZG48CM is a DH line cultured and prepared from microspores of cabbage early-maturing hybrid seeds (Hope) by using a cabbage isolated microspore culture technology. The DH13-20M3 is prepared by using isolated microspores of a cabbage early-maturing variety (Qin cabbage 50). The breeding method of the spring cabbage early-maturing variety resistant to premature bolting, disclosed by the invention, has the advantage that the bred early spring cabbage 1852 is a novel premature bolting resistant, excellent, disease-resistant and high-yield spring cabbage early-maturing variety.

Description

technical field [0001] The invention relates to the technical field of breeding, in particular to a breeding method for spring cabbage resistant to immature bolting and early maturing varieties. Background technique [0002] Cabbage is one of the main vegetable crops that are cultivated in various seasons and supplied every year in my country. Cabbage is rich in nutrients and anticancer substances, and plays an important role in promoting human health and improving people's living standards. Breeding of multiple varieties of cabbage can achieve annual supply, which plays a key role in alleviating the off-peak season in the market and meeting the annual balanced supply of fresh vegetables. After the 1990s, the cultivation area of ​​cabbage in my country has grown rapidly, especially the growth in the cultivation area of ​​early-maturing cabbage in spring. The current national cultivation area of ​​cabbage is about 916,000 hectares, of which the cultivation area of ​​early spr...

AI Technical Summary

Problems solved by technology

[0003] The main problem facing the early spring cabbage cultivation industry is the lack of good varieties that are resistant to bolting. Due to the "late spring cold" that is prone to occur during the spring cabbage cultivation period in my country, the cabbage varieties with weak spring sex will experience "immature bolting" through vernalization, causing them to lose spring. The significance of cabbage cultivation. Therefore, the country lists the breeding of spring cabbage resistant to bolting as the goal of cabbage breeding. Based on the needs of the domestic spring cabbage industry and the requirements of the national spring cabbage breeding goals, the breeding of immature bolting resistance, high quality, disease resistance, and a single bulb weight of 1.1 kg Around 55-58 days from planting to harvest, the new early-maturing cabbage variety has become the breeding target for this variety selection

Images