Method for selectively breeding anti-bolting cabbage

Abstract

The invention discloses a method for breeding Chinese cabbage which is shoot-withering-resistant, applying the shoot-withering-resistant auto-copulation incompatible seed material O1S315 as female parent, applying the shoot-withering auto-copulation compatible seed material O1S105 as male parent, crossing the male parent and female parent and getting the product. The Chinese cabbage bred in this invention is the first hybrid ripening in the middle of the ripening time with the child-bearing age about 60-65 days (from plant to recovery), the height of the plant is 37.1 cm, the expansion degree is 60.3 cm, the growth potential is great, the sheet number of the exite is 13, the color of leaf is dark green and the leaf stalk is white, the leaf ball overlaps with each other and forms a reverse egg shape, the leaf ball is milky white, the ball height is 19.6 cm, the sphere index is 1.5, the weight of single ball is 1.8-2.5 kg, the pure vegetable index is over 73.9%, the number of leaf is about 60, and the soot-withering-resistance in early time is strong. At the seed producing time, the flower phrase of female parent is 7-10 days earlier than that of male parent, the male parent should be sewed 15-25 days earlier or more because of stronger winter prosperity than male parent, the line proportion between female parent and male parent is 2:1, and the sprout left number per acre is 4000-4500.

Description

technical field [0001] The invention belongs to the discipline of crop genetics and breeding in agricultural science and technology, and in particular relates to a method for selecting and breeding Chinese cabbage resistant to bolting. Background technique [0002] Chinese cabbage (Brassica campestris ssp. Pekinensis olsson) is one of the main vegetable species originated in China, and plays an important role in the annual supply and export trade of vegetables in my country. In recent years, with the improvement of people's living standards, people hope to be able to eat Chinese cabbage, the "national dish" that is fresh, delicious, nutritious, and diverse in color and variety in every season. However, the problem of immature bolting is a key restrictive factor for the production of spring heading cabbage in my country and even in the world. The most fundamental and effective way to solve this problem is to cultivate bolting-resistant, disease-resista...

AI Technical Summary

Problems solved by technology

Therefore, the excavation, improvement, innovation and rapid identification of bolting-resistant Chinese cabbage germplasm is one of the problems that need to be solved urgently; the second problem that needs to be solved urgently is that the bolting period of Chinese cabbage resistant to bolting is longer than that of ordinary varieties It is much longer, which greatly limits the breeding process of bolting-resistant Chinese cabbage, and is far from meeting the urgent needs of breeding units and the market for the speed and quantity of new varieties.