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Method of converting wheat chemical insecticide composition into triseries composition

A technology of wheat and maintainer lines, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve problems such as low recovery, variation in recovery, and haploid production

Inactive Publication Date: 2007-05-30
NORTHWEST A & F UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of direct directional transfer of the standard strong dominant combination formulated by chemical killing method into non-1B / 1R wheat male sterile three-line qualified strong dominant combination, which can effectively induce male sterility by chemical andricidal The organic combination with the three-line method (Cytoplasm-nucleus Male Sterility, abbreviated as CMS) has solved some difficult problems in the current research and production of male sterility of myxoids, such as the single male sterile line produced Ploidy, low degree of recovery, large variation in recovery, etc., in order to breed an excellent three-line combination that can be directly used in production

Method used

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  • Method of converting wheat chemical insecticide composition into triseries composition
  • Method of converting wheat chemical insecticide composition into triseries composition

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Embodiment Construction

[0061] The present invention uses rigorous and scientific chromosome engineering technology and cytogenetic analysis technology to transfer the 1B chromosome carrying the sterile gene (rfv1) of the sticky male sterile line in wheat to replace the 1B chromosome of the female parent in the CHA strong dominant combination (without carrying the rfv1 gene); the 1B chromosome carrying the restorer gene (Rfv1) of the myxoid male sterile line is specifically oriented to replace the 1B chromosome of the male parent in the CHA strong dominant combination (without carrying the Rfv1 gene ). And through chromosomal marker selection and directional continuous replacement backcrossing, keep the other genetic background of the recipient of the changed parent (CHA parent) basically unchanged, and breed the same male sterile line, maintainer line, and restorer line as the CHA similar combination parent , so as to achieve three-line matching, and finally through the combination selection and bre...

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Abstract

A method for culturing the male sterile wheat by transferring from the chenmical male-sterilizing combination to the three-line combination features that the chromasone transfer technique is used to transfer the chromosen 1B with sterile gene rfv1 in SP4 or other parents to the female parent of chemical male-sterilizing combination for selectively culturing the male sterile maintenance line and sterile line of excellent glutinous non-1B / 1R wheat, and the chromosome 1B with recovery gene Rfv1 in the excellent recovery line of male sterile line for glutinous wheat is transferred the male parent of chemical male-sterilizing combination to selectively culture excellent recovery line.

Description

technical field [0001] The invention relates to the field of wheat heterosis utilization, and relates to a method for converting a wheat chemical-killing combination into a three-line combination. Background technique [0002] Heterosis is a common phenomenon in the biological world. Using heterosis to increase crop yield is one of the important achievements in the field of modern genetics research. The utilization of heterosis in wheat, since Wilson and Ross found in 1962 the male sterility (called T-type sterile line) and its fertility restoration system with Timofevi wheat (T.Timopheevi) cytoplasm, all countries in the world actively The research on utilization of wheat heterosis by using T-type male sterile lines was carried out. However, with the practical application of T-type male sterile lines, it has been found that the shortcomings of T-type sterile lines such as seed shrinkage and narrow recovery source have become the biggest obstacle to the further expansion an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 张改生牛娜王军卫袁虎林杜伟莉邵景侠张慧成
Owner NORTHWEST A & F UNIV
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