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Cabbage type rape three-way cross hybrid breeding method

A cabbage rape and hybrid technology is applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of insufficient safety, convenience, high efficiency, high yield and the like, and achieves the effect of expanding sources

Inactive Publication Date: 2017-08-18
湖南省春云农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a method for breeding three-cross hybrids of Brassica napus to solve the problems of insufficient safety, convenience, high efficiency and high yield in the breeding process of existing rapeseed varieties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0018] A stable new line 159-6 with high oil content and good comprehensive traits was selected as the female parent. After testing, 159-6 was sensitive to chemical andricides. The currently promoted Fengyou 520 hybrid with good comprehensive traits was selected as the male parent. Fengyou 520 It is a CMS hybrid obtained by crossing Xiang'ai A and 520 in Hunan Crop Research Institute. The male parent and the female parent are planted in rows at intervals, the ratio of the parents to the parent row is 1:3, and a safety isolation zone is set up within 1 km around the plant. Cruciferous crops are not allowed to be planted in the isolation zone. The crops should be removed in time; when the female parent is just budding, the female parent is sprayed with chemical andricide twice to make the female parent sterile. The chemical andricide is WP water agent. The ratio of 1:200 was diluted to form the master dose, and then the master dose was formulated into the use agent at a ratio of...

specific Embodiment 2

[0021] When crossing for the first time, two stable new lines with high oil content, 159-6 and Qu 491, were first selected. 159-6 was selected as the female parent of the pretreatment, and Qu 491 was used as the male parent of the pretreatment. The female parent was sterilized and formed into a hybrid with District 491. The selection of chemical andricide species and dosage and the operation method during the allocation process were the same as the second crossing as follows.

[0022] The hybrid obtained from the first crossing was used as the male parent of the second crossing, and the female parent of the second crossing was selected as the popularized variety that won the second prize of the National Science and Technology Progress Award and Xiangyou No. 15, which is sensitive to chemical andricides. During the second hybridization, the male parent and the female parent are planted in separate rows, the ratio of the parents to the parent row is 2:6, and a safety isolation zo...

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Abstract

The invention discloses a cabbage type rape three-way cross hybrid breeding method. According to the method, existing cabbage type rape varieties, sensitive to chemical hybridization agents, of non-sterile lines and non-sterile line hybrids serve as female parents, various kinds of existing hybrids or new hybrids with good properties are selected as male parents, the female parents are subjected to hybridization treatment, so that the female parents are highly male sterile and hybridized with the male parents, and accordingly existing hybridization advantages are achieved; a combination higher in advantage is selected through free parent selection and multi-parent advantage complementation, it can be ensured that no risks are caused during hybrid production, sources of good properties are widened, and it is guaranteed that rape variety breeding is safe, convenient, efficient and high in yield.

Description

technical field [0001] The invention relates to the technical field of crop breeding, in particular to a method for breeding three-cross hybrids of Brassica napus. Background technique [0002] In recent years, with the development of the economy and the continuous improvement of people's living standards, the market demand for rapeseed is increasing, while the area of ​​cultivated land occupied by industry has increased sharply, the area of ​​rapeseed has been relatively reduced, and the contradiction between supply and demand has become more prominent. International and domestic supply The global demand for vegetable oil is increasing, so how to increase the yield per unit area of ​​rapeseed is particularly important. In the past two decades, the breeding of rapeseed has made great progress, and hybrid rapeseed has been popularized and applied in large quantities. Quality improvement and other aspects have achieved great success. Facts have proved that research and improve...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 王国槐贺彭毅
Owner 湖南省春云农业科技股份有限公司
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