Breeding method of a multi-main shoot clustered rapeseed variety

Abstract

The invention discloses a method for breeding rapeseed varieties with clusters of main stalks, which comprises the following steps: using the cabbage-type rapeseed farm variety as the female parent and the cabbage-type rapeseed green manure variety as the male parent to perform hybridization; the obtained F1 plant is the female parent The BC2F1 population was obtained by backcrossing, and the BC2F1 segregation population or continuous self-crossing was constructed, and a single plant with normal fertility and the number of main stems ≥ 3 was selected for in vitro culture of microspores; after the determination of erucic acid and glucosinolate content, the seed mustard was retained DH strains whose acid and glucosinolate contents are superior to the national "double-low" rapeseed standard are obtained. The breeding method is simple and easy to operate, and has high efficiency. The multi-main shoot cluster type rapeseed variety obtained by breeding has a large number of main shoots, early bolting, and has the characteristics of simultaneous simultaneous growth of multiple main stems, and the main shoots have the same height, which can overcome Currently, Brassica napus shoots are not suitable for mechanized harvesting, and the yield of one-time harvesting is not high.

Description

technical field [0001] The invention belongs to the technical field of rapeseed breeding, and in particular relates to a method for breeding a variety of rapeseed with clusters of main shoots. Background technique [0002] Rapeseed is one of the three major oil crops in the world. Chinese rapeseed scientific and technological workers have fully proved through a large number of studies that rapeseed is not only used for oil, but also has multi-functional uses such as flowers, fertilizers, vegetables, fodder, and honey. Under the condition that the relative economic benefits of rapeseed pure oil are not high, it is an important measure to enhance the competitiveness of the rapeseed industry by rationally developing the multi-functions of rapeseed to achieve "one vegetable with multiple uses". Rapeseed sprouts are rich in dietary fiber, carotene, and vitamin C, which can help digestion and improve human immunity. Double-low high-quality rape sprouts are gradually favored by co...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to create a homozygous and stable multi-main shoot cluster-growing rapeseed variety suitable for mechanized scaping, so as to solve the problem of low yield, unsuitable for mechanized operation and fertilizer biomass for one main stalk in current oilseed rape. Not high technical problems, and further expand the multi-functional application field of Brassica napus to improve the production efficiency of Brassica napus

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