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Method for cultivating novel wheat male sterile line and maintenance line

A technology of male sterile line and maintainer line, which is applied in the fields of botanical equipment and methods, application, and plant genetic improvement, and can solve problems such as difficult recovery.

Inactive Publication Date: 2006-07-26
冯树英 +1
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the "T" type sterile line is difficult to recover, and to provide a method for cultivating a new type of wheat male sterile line and maintainer line, using the method of close hybridization between hexaploid common wheat varieties, to Breeding of Male Sterile Line of Wheat with New Type of Germplasm

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  • Method for cultivating novel wheat male sterile line and maintenance line

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Embodiment Construction

[0013] Cultivation method of the present invention carries out according to the following steps:

[0014] 1. Firstly, select an appropriate common wheat variety for inter-varietal hybridization to generate a first-generation hybrid F1, and self-cross the F1 to generate a second-generation hybrid F2.

[0015] Common wheat varieties for hybridization should be those with distant kinship and large differences in traits. After the pedigree analysis and character observation of wheat varieties, the hybrid combination was selected from the perspective of distant blood relationship and large character difference. The purpose of hybridization is to isolate male sterile plants through recombination of genetic material, which is different from conventional crossbreeding. The selection of varieties does not consider the advantages and disadvantages of their agronomic traits and their complementarity.

[0016] 2. Expand the planting population of the second-generation hybrid F2 and selec...

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Abstract

The invention relates to a method for breeding new pattern male sterility line and retention line for wheat, near cross-breeding with hexaploid common wheat, enlarging plant population of second-filial generation through cross-breeding and auto-copulation, choosing sterility plant for test crossing, back crossing and sister crossing to breed male sterility line which is easy to maintain and restore, which is characterized by sterility of nuclear interaction, wide restore source, strong copulation and appreciable heterosis.

Description

technical field [0001] The invention relates to a method for cultivating novel wheat male sterile lines and maintainer lines, and belongs to the technical field of crop heterosis utilization. Background technique [0002] Using heterosis to increase crop yield and improve crop quality is one of the most advanced and economical core technologies in the world today. The research on the utilization of wheat heterosis in the world has lasted for more than 50 years. In the early 1960s, the "T" type male sterile line and other sterile lines have been bred by the way of wheat distant hybridization, and the three-line matching has been realized. So far, no breakthrough has been made in the application of breeding lines. The main problem is that it is difficult to restore the fertility of common wheat. Specifically speaking, its recovery source is very narrow, which seriously limits the research and utilization of "T" type sterile lines and their homotype sterile lines. The "T" typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 冯树英冯姗
Owner 冯树英
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