Method for cultivating wheat cultivar

A variety, wheat technology, applied in the field of breeding, can solve the problems of insufficient utilization of resources, insufficient expression of genetic types, outdated breeding methods, etc.

Inactive Publication Date: 2011-06-15
CANGZHOU ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Over the years, few breakthrough varieties have been bred by wheat breeding. The fundamental reason is that the breeding methods are outdated and the resources are not fully utilized.
The current conventional hybrid breeding method has been used for nearly 100 years. The pedigree method of single ecological conditions is used to process the combined offspring, which makes it difficult to express the main target trait genes of the combined offspring at the same time, the genetic type cannot be fully expressed, and the blindness of selection is large and low. Generations of selected materials are basically stable and then identified under different ecological conditions, and are often eliminated because they cannot adapt to a variety of complex environmental conditions
The heavy material burden of the low generation cannot be thrown away until the high generation, resulting in a serious waste of manpower and material resources
[0004] Limited by traditional breeding methods, the more serious problem is that the genetic background of the bred varieties is narrow and the genetic resources are poor, because some non-target genes will be discarded every time the cross selection is selected. Over time, the discarded genes will gradually increase. The genotypes are also becoming narrower and narrower, resulting in some individual traits of the bred varieties being particularly prominent, but poor in broad adaptability, unable to adapt to the changing ecological environment
[0005] From the analysis of genetic theory, the conventional hybrid breeding method carries out 1-2 times of hybridization, using only a few or even 1 main effect gene, the number of pairs is large and very scattered, and is highly correlated with various yield traits and stress resistance traits It is difficult to use the micro-effect genes, and these micro-effect gene groups are the essential basis for high and stable yield
The genetic effects of genes used in conventional cross-breeding methods are mainly complementary effects, while the cumulative and additive effects of genes are difficult to achieve, which is one of the internal reasons why it is difficult to breed breakthrough varieties

Method used

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  • Method for cultivating wheat cultivar
  • Method for cultivating wheat cultivar
  • Method for cultivating wheat cultivar

Examples

Experimental program
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Embodiment 1

[0036] Embodiment 1, the cultivation of Canghe 030 wheat variety

[0037] In 1986, the reincarnation population was established by using the Ta1 dominant genetic sterility gene material, with stress-resistant, high-quality, and high-yielding parents as the mainstay. By 1990, the reincarnation selection process was completed. From 1991 to 1994, the descendants of reincarnation were selected and cultivated according to the pedigree method by alternating floods and droughts. In 1995, they entered the production ratio test and sowed sparsely. From 1997 to 1998, they completed the regional test and production test in Hebei Province. In 1999, they were approved by the Hebei Provincial Variety Approval Committee. Passed, the approval number is Jishenmai 99-003, and the specific cultivation method is as follows:

[0038] 1. Excellent parent material of wheat

[0039] According to the requirements of breeding objectives, 423 resource materials of various varieties were extensively col...

Embodiment 2

[0072] Embodiment 2, the cultivation of Canghe 036 wheat varieties

[0073] Canghe 036 is a new wheat variety. In 1986, a reincarnation group was formed using the material of the dominant sterility gene Ta1. In 1991, the reincarnation selection process was completed, and the alternate selection, identification test and sparse seeding were carried out. In 2001-2002, the regional production test was completed. , was approved by the Hebei Provincial Variety Approval Committee in 2002, and the approval number is "Ji Shenmai 2002004". The specific cultivation method is as follows:

[0074] 1. Excellent parent material of wheat

[0075] Canghe 036 (Cangtai 97-19 is the variety code name when participating in the regional test) is also derived from the reincarnation population established in 1986 using the Ta1 dominant sterility gene material, with stress-resistant, high-quality, and high-yielding parents. The hybrid combination scheme of excellent parent material and the establish...

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Abstract

The invention discloses a method for breeding wheat cultivar, comprising the following steps: a. taking a dominant sterility gene Ta1 material as a female parent, and carrying out single cross or multiple cross on a breeding parent material containing required genetic components for combined hybridization to obtain a recurrent selection group CO; b. carrying out mutual hybridization recurrent selection on the descendant of the recurrent selection group CO to obtain a recurrent descendant Cn; and c. breeding the recurrent descendant Cn, building different adverse-situation or non adverse-situation seed selection environments on the same site, and carrying out adverse-situation or non adverse-situation alternate selection and a yield ratio qualification test among generations to cultivate the excellent cultivar of wheat. The wheat cultivar cultivated with the method provided by the invention has the advantages of stress resistance, water saving property, yielding ability and wide adaptability.

Description

technical field [0001] The invention relates to a breeding method, in particular to a method for cultivating wheat varieties. Background technique [0002] Wheat is the food crop with the widest distribution, the largest planting area, the largest total output, and the most abundant processed products in the world. It is the staple food of more than 50% of the world's population. [0003] Over the years, few breakthrough varieties have been bred by wheat breeding. The fundamental reason is that the breeding methods are outdated and the resources are not fully utilized. The current conventional hybrid breeding method has been used for nearly 100 years. The pedigree method of single ecological conditions is used to process the combined offspring, which makes it difficult to express the main target trait genes of the combined offspring at the same time, the genetic type cannot be fully expressed, and the blindness of selection is large and low. Generations of selected material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 赵松山王奉芝陆莉于亮张焕英张金霞钮力亚付晶
Owner CANGZHOU ACAD OF AGRI & FORESTRY SCI
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