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Method for breeding high-yield wheat variety (line)

A technology of wheat and varieties, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of loss of chromosome fragments of wheat itself, poor agronomic traits of wheat recipient parents, etc., and achieve efficient and rapid breeding, resistance The effect of good disease resistance and strong adaptability

Pending Publication Date: 2021-05-07
CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI
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Problems solved by technology

The reason is mainly from the following three points [4,5] : (1) The agronomic traits of the wheat recipient parent are poor; (2) During the translocation process, the wheat chromosome segment is lost, and the imported heterologous chromosome segment cannot fully compensate for the wheat segment loss; (3) The imported heterologous chromosome segment unfavorable gene

Method used

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  • Method for breeding high-yield wheat variety (line)
  • Method for breeding high-yield wheat variety (line)
  • Method for breeding high-yield wheat variety (line)

Examples

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Embodiment 1

[0029] A method for breeding high-yield wheat varieties (lines) comprises the following steps: using the varieties (lines) carrying 5B-7B reciprocal translocation chromosomes as parents, hybridizing with other wheat varieties (lines), and performing self-crossing or backcrossing of hybrid F1 Or top-crossing, through summer multiplication to shorten the breeding period, the offspring are evaluated for disease resistance and agronomic traits in the field, and then high-throughput fluorescence in situ hybridization technology is used to track and identify the 5B-7B reciprocal translocation chromosomes in the offspring, so as to select and carry A new high-yield wheat variety (line) with 5B-7B reciprocal translocation.

[0030] The wheat variety Chuanmai 62 carrying the 5B-7B reciprocal translocation was used as the male parent, and Jing 05-3805-06 was used as the female parent, and a hybrid combination was prepared for summer propagation, and then backcrossed with Chuanmai 62 as t...

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Abstract

The invention relates to the technical field of wheat breeding, in particular to a method for breeding a high-yield wheat variety (line). According to the method disclosed by the invention, the high-yield wheat new variety (line) is bred by utilizing self 5B-7B mutual translocation chromosomes in wheat seeds, and the translocation chromosomes do not involve introduction of heterologous chromosomes, namely do not carry adverse genes; and meanwhile, the translocation has the advantages of being related to high yield and excellent agronomic characters, high in adaptability and good in disease resistance, and the high-yield new variety (line) can be efficiently and rapidly bred by combining 5B-7B mutual translocation with a high-throughput fluorescence in-situ hybridization technology.

Description

technical field [0001] The invention relates to the technical field of wheat breeding, in particular to a method for breeding high-yielding wheat varieties (lines). Background technique [0002] Wheat is one of the important food crops in the world, about 35% of the population takes wheat as staple food. In my country, the planting area and output of wheat are second only to rice, and it is the second largest food crop. The safety of wheat production is of great significance to economic development and social stability. With the development of chromosome engineering technology, excellent genes of close relatives of wheat are continuously introduced into the genetic background of wheat, which is of great significance for improving the yield, resistance and adaptability of wheat. Among them, the introduction of exogenous genes is mainly in the form of chromosomal translocation, and has been successfully applied to wheat breeding and improvement, mainly in wheat-rye 1RS·1BL, ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 恩年杨漫宇
Owner CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI
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