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Replacement method of cytoplasm of blue abortion sterile line

A technology of cytoplasm and germplasm, which is applied in the field of cytoplasmic replacement of R. indigo male sterile line, can solve the problems of inability to realize cytoplasmic replacement of dominant nuclear sterile line, short research time, etc., and achieve the effect of cytoplasmic replacement

Inactive Publication Date: 2020-11-10
淄博爱民种业有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The research time of indigo sterility is relatively short, from Taigu GMMS, dwarf sterility, and indigo sterility, people have been looking for suppressor genes, or epistatic genes, in order to realize the cytoplasmic replacement of dominant genic male sterile lines, which is double heterosis (Heterosis between different cytoplasms and nuclei, and between nuclei and nuclei) It is possible to create conditions by using them, but the current indica germplasm cannot achieve cytoplasmic replacement of dominant genital sterile lines

Method used

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Embodiment Construction

[0028] The present invention will be further explained below in combination with specific embodiments.

[0029] 1. The inventor speculates through analysis that in common wheat relatives, there may be inhibitory Ms 2 Non-allelic epilepsy (dominant or recessive) for trait expression. If a recessive epistatic germplasm is present, it will be crossed with canthratum germplasm as follows:

[0030] The genetic behavior of Indigo male sterile line conforms to the characteristic of monosomy inheritance. Assuming that a certain white-grained variety has a non-allelic recessive epistatic gene (bb) on the chromosome outside the monosomy addition line 2 The expression of the gene can be inhibited, so use this germplasm (bb, ms 2 ms 2 ) against Blue (4D / 4E -BB, Ms 2 ms 2 ) pollination will occur as follows:

[0031] The genotype of the 4D monosomy female gamete of the Lanbai 4D / 4E translocation addition line is B-Ms 2 , the average female gamete transmission rate of the monosom...

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PUM

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Abstract

The invention discloses a replacement method of cytoplasm of a blue abortion sterile line, and belongs to the field of wheat breeding. According to the replacement method, a germplasm containing recessive epistatic non-allelic genes with the inhibition effect on expression of a blue abortion Ms2 character is obtained through autonomous breeding, and the germplasm can enable more than half of bluegrains borne by blue abortion plants to be fertile and nearly half of the blue grains to be sterile; the current situation that the blue grains borne by the existing blue abortion plants are all sterile is broken through; and the germplasm is used as an intermediate bridge germplasm, so that replacement of the cytoplasm of the blue abortion sterile line is realized.

Description

technical field [0001] The invention relates to the field of wheat breeding, in particular to a method for replacing the cytoplasm of a sterile line of indica. Background technique [0002] Lanbai is a blue-grain-marked genic male sterile line whose blue-grain (4D / 4E), anther abortion (Ms 2 ) Two dominant traits are linked on chromosome 4D, which is a translocation addition line 4D # monomer. The genetic behavior of Indigo male sterile line conforms to the characteristic of monosomy inheritance. [0003] The sterility gene of Indigo male sterile line is dominant genic male sterile single gene Ms from Taigu genic male sterile 2 , the gene germplasm has many advantages such as complete abortion of anthers and large glume opening angle. After successive researches by the teams of Tian Ning and Geng Aimin, Lanbai has fully demonstrated the many advantages of this approach in the utilization of wheat heterosis, bringing opportunities and hope for the utilization of wheat hete...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 耿爱民陈凤龙刘玉东耿少楠耿冬梅徐学亮吴倩耿名男
Owner 淄博爱民种业有限公司
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