Breeding method of brassica vegetable hybrid

Abstract

The invention belongs to the technical field of vegetable breeding, and discloses a breeding method of a brassica vegetable hybrid. A cabbage type rape sterile line as a female parent is mated with acabbage / Chinese cabbage / leaf mustard inbreeding line as a male parent into a hybrid, and a hybrid between brassica plant species is obtained; the male parent is diploid Chinese cabbage AA, the diploid Chinese cabbage AA is mated with tetraploid cabbage type rape AACC into a hybrid, and the hybrid is a triploid AAC cabbage and Chinese cabbage hybrid; the male parent is diploid cabbage CC, the diploid cabbage CC is mated with the tetraploid cabbage type rape into a hybrid, and the hybrid is a triploid ACC cabbage and cabbage hybrid; the male parent is tetraploid AABB, the tetraploid leaf mustard AABB is mated with the tetraploid cabbage type rape into a hybrid, and the hybrid is a tetraploid AABC cabbage and leaf mustard hybrid. The breeding method of the brassica vegetable hybrid createsnew species to promote breeding and utilization of brassicaceae brassica vegetable new species.

Description

technical field [0001] The invention belongs to the technical field of vegetable breeding, in particular to a method for breeding vegetable hybrids of Brassica plants. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] The Brassica genus includes three basic species (cabbage, cabbage, and black mustard) and three composite species (Brassica napus, Brassica napus, and Ethiopian mustard). Among them, Brassica napus, mustard greens, Chinese cabbage and cabbage are used in production. [0004] Cabbage and kale are the most important cruciferous vegetables. Cabbage, cabbage and mustard are characteristic vegetables in southern my country, mainly for leaves, stems and stalks (Wan Zhengjie et al., Research Progress and Prospects of Heterosis Utilization in Mustard Vegetables, Journal of Huazhong Agricultural University, 2018, 115-120 ), the well-known "Hongshan cabbage" and "Guangdong cabbage" belong to Chine...

AI Technical Summary

Problems solved by technology

[0009] The cabbage, cabbage and mustard varieties bred in the prior art have diversity and richness in appearance and growth period, are suitable for the needs of consumers, and have good commercial properties, but have the defects of poor insect resistance, disease resistance and stress resistance

[0010] The cabbage-type rape varieties bred in the prior art have the advantages of high quality, bright green color after frying, firmness, and slightly sweet fragrance, but have the defects of poor appearance and poor commerciality, which are manifested as: Few stalks, poor uprightness, large leaves, long petioles, rough leaf veins, uneven leaf surfaces, wax powder, and drooping leaves within a few hours after picking

[0011] In the existing technology, the genetic diversity of Brassica plant germplasm resources is expanded through interspecific hybridization, and there are defects such as poor self-seed setting of interspecific hybrid offspring, severe trait segregation, biased trait segregation, and stable inheritance of traits requiring many generations.

[0012] (2) The varieties bred in the prior art only have the genome genetic information of one species of Brassica napus, Chinese cabbage, Brassica oleracea or mustard, and do not contain both Brassica napus and Chinese cabbage, Brassica napus and Brassica oleracea, or Brassica napus and mustard Genomic Genetic Resources

[0013] (3) The varieties bred in the prior art can be self-crossed or the buds can be self-crossed to harvest seeds, and individual selection can be carried out in the segregated population of its offspring, so the varieties cannot be effectively protected

Because interspecific hybrid offspring have poor self-seed setting, serious segregation of traits, and biased segregation of traits, not only does it take many generations to stabilize, but also the traits of stable plants tend to be biased towards a certain parent, making it difficult to aggregate parental advantages

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