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Method for breeding yellow-seed high oil content rape or cytoplasm male sterility recovery line

A technology of male sterility and restorer lines, applied in the fields of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of genetic instability and ineffectiveness, and achieve good economic traits, strong stress resistance, and adaptability Good results

Inactive Publication Date: 2004-01-14
HUAZHONG AGRI UNIV
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AI Technical Summary

Problems solved by technology

Since the traits of yellow seeds are controlled by multiple pairs of genes and are genetically unstable, it is difficult to use common hybrid breeding methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach ： Embodiment 1

[0019] Specific implementation methods: Example 1: Breeding example of the restorer line YR6245 with high oil content in yellow seeds

[0020] Using the sterile plants in the recurrent selection population of the established yellow-seed rape restorer line as the female parent, they were respectively crossed with Brassica napus yellow-seed lines No.2127-1, Yn-90-1016, 2000V57 or Rakow to obtain F1 Backcross once with the corresponding yellow seed parent, and then mix and sow the seeds of the backcross offspring to enter recurrent selection. Its specific selection steps are:

[0021] (1) Using different sources of yellow seed rape (for example: Brassica napus yellow seed line No.2127-1, Yn90-1016, 2000V57 or Rakow) and the established cytoplasmic male sterile restorer line to select the nuclear males in the population Hybridization of sterile plants to obtain F1 hybrids;

[0022] (2) Backcross the F1 hybrid with the corresponding Huangzi parent once;

[0023] (3) mixing the h...

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Abstract

A method for selectively breeding the rape variety with yellow seeds and high oil content features that different yellow-seed rape varieties are hybridized with the karyon male-sterility plant in the recurrent selection group of created cytoplamic male sterility restoring line to create the recurrent selection group of cytoplasmic male sterility restoring line, and recurrent selection is performed to selectively breed the cytoplasmic male sterility restoring line of said rape with yellow seeds and high oil content. Its advantages are simple process, low cost, continuous directional selection, and high effect.

Description

technical field [0001] The invention belongs to the technical field of selection and breeding of rapeseed cytoplasmic male sterile restorer lines. In particular, it relates to a new breeding method for selecting and breeding new varieties of yellow-seed rape. Background technique [0002] A large number of studies have shown that yellow seed rape has the advantages of high oil content, high protein content and low crude fiber content. Therefore, many breeders at home and abroad regard yellow-seed breeding as an important breeding goal, and breeding yellow-seeded hybrid rapeseed is an effective way to further increase the yield of yellow-seeded rape varieties. [0003] Cytoplasmic male sterility is currently the most effective way for hybrid breeding of rapeseed (for example, Fu Tingdong: "Breeding and Utilization of Hybrid Rapeseed", Wuhan, Hubei Science and Technology Press, 2000). The hybrid varieties of rapeseed with high oil content in Huangzi can be assembled by breed...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 杨光圣傅廷栋
Owner HUAZHONG AGRI UNIV
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