Method for rapidly obtaining a large number of wheat double-haploid homozygous populations

Abstract

The invention discloses a method for rapidly obtaining a large number of wheat double-haploid homozygous populations. According to the method, based on a wheat and corn double-haploid breeding technology, through the key links of wheat and corn sowing at different stages, haploid induction, transplantation and vernalization, reduplication and transplantation and winter sowing treatment, after wheat young embryos differentiate into haploid seedlings, transplantation, vernalization and haploid plant reduplication are completed in the same year without over-summer treatment, wheat double-haploid seeds can be harvested in the same year, the requirement for sowing once more can be met after the harvest on the perspective of time, a large number of stable new strains of the wheat homozygous populations can be obtained within one year, the requirement for identifying the new strains at the next stage is met, the natural environment is utilized to the maximum degree, and the time of wheat double-haploid breeding is shortened to one year from two to three years. In this way, the wheat breeding speed is increased, the breeding efficiency is improved, the breeding cycle is shortened, and the breeding cost is lowered.

Description

Technical field [0001] The present invention belongs to the field of wheat breeding technology, which involves a method that quickly obtains a large number of wheat double polymers. Background technique [0002] The conventional wheat breeding technology needs to obtain a solid new product system through the selection, sexual hybridization, separation of offspring, artificial selection, gene pure convergence, and new product identification.Time, the selection process of a new product takes about 10 years, which is time -consuming and laborious. [0003] Wheat double -doubling sports breeding time is gradually adopted by breeding experts and commercial breeding enterprises because of its acceleration of wheat breeding process and shortening the new varieties of wheat varieties.Wheat double -doubling sports species is a wheat monotherapy body disappear through wheat × corn hybridization and hybridization. The wheat monotherapy and their chromosomes are doubled after forming a pure ...

AI Technical Summary

Problems solved by technology

Among them, immature embryo culture, chromosome doubling, multiplication, etc., are currently commonly used methods to produce haploid seedlings through immature embryo culture, transplant them to low-temperature greenhouses, undergo summer cultivation, autumn sowing, and wait for the next year to double into single seedlings. ploidy, and then after one year of multiplication, it will take at least two years to obtain a stable new strain with sufficient seed quantity and enter the new strain identification link, which affects the breeding process to a certain extent and cannot adapt to today's rapid development. Requirements for Breeding New Wheat Varieties with High Yield, High Quality and Multi-resistance