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Rapid directional improvement technology for wheat target traits

A technology for targeted traits and directional improvement, applied in the field of crop genetics and breeding, can solve the problems of rapid factory breeding without rapid breeding technology, and achieve the effect of shortening the breeding cycle and improving the breeding efficiency.

Pending Publication Date: 2021-04-27
SHIHEZI UNIVERSITY +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The above methods do not use functional gene markers and whole genome chips for accurate and efficient assisted selection, nor do they combine rapid breeding technology for rapid factory breeding

Method used

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  • Rapid directional improvement technology for wheat target traits
  • Rapid directional improvement technology for wheat target traits
  • Rapid directional improvement technology for wheat target traits

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Embodiment Construction

[0026] With reference to the accompanying drawings, this technical solution takes the rapid and directional improvement of the leaf rust resistance traits of strong winter wheat as an example to describe the specific implementation of the technology of the present invention in detail:

[0027] The recipient variety is Shi 2013-2, which does not contain the main anti-leaf rust gene, and the donor variety is Zhongmai 1062, which contains the main anti-leaf rust gene Lr9 and Lr14a, and the recipient wheat Shi 2013 is rapidly and directionally improved within 1 year and 6 months. Leaf rust resistance traits in 2013-2.

[0028] 1. In September of that year, the seeds of Shi 2013-2 and Zhongmai 1062 were sterilized in a petri dish with 0.1% arsenic and mercury, and then germinated. After the grains became white, they were placed in the refrigerator for 10-14 days at a low temperature of 2-4°C. Devernalization treatment culture. Add 0.3% H for the first 1-2d during low temperature c...

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Abstract

The invention belongs to the agricultural technology, and relates to the field of crop genetics and breeding. The invention relates to a rapid directional improvement technology for wheat target traits. The rapid directional improvement technology comprises the following steps of 1, hybridizing a receptor variety which does not contain a target trait gene and is used as a female parent and a donor wheat variety which contains the target trait gene and is used as a male parent to generate F1 seeds; carrying out backcross on the F1 seeds and receptor varieties to generate BC1 seeds; carrying out backcross on the selected single plant carrying the target trait gene and the receptor variety to generate BC2 seeds; and 2, planting the BC2 seeds in a greenhouse, carrying out KASP marker-assisted selection and whole genome background selection, and carrying out backcross on the selected single plant carrying the target trait gene and the receptor variety to generate BC3 seeds and the like. By means of the technology, in the wheat breeding process, rapid and accurate directional selection and directional improvement can be achieved on target traits, the new variety breeding period is greatly shortened, and the new variety breeding efficiency is improved.

Description

technical field [0001] The invention belongs to agricultural technology, and relates to the field of crop genetics and breeding, in particular to a technology for rapid and directional improvement of wheat target traits. Background technique [0002] The technology for improving the target traits of wheat belongs to the commonly used technology in wheat breeding and research. The targeted improvement technology of wheat target traits is a basic experimental technology for wheat breeding, germplasm innovation and scientific research. [0003] At present, in the process of wheat breeding, the selection and improvement of target traits cannot achieve rapid and precise directional selection and directional improvement. In addition, it usually takes 7-8 years to produce a progeny system through cross breeding between varieties, after years of continuous selection until a homozygous stable strain is formed. It generally takes more than 10 years for new varieties at the fastest, ...

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 李诚李春艳付凯勇李超张祥池
Owner SHIHEZI UNIVERSITY
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