Rape cytoplasmic male sterility + self incompatibility hybrid superiority using method

A technology of male sterility and heterosis, applied in the directions of botanical equipment and methods, applications, and plant genetic improvement, it can solve the problems of difficulty in visual identification of hybrid purity, lack and other problems, so as to reduce the risk of seed production, ensure the purity of seed production, Effects of high uniformity and heterosis strength

Inactive Publication Date: 2005-03-02
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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Problems solved by technology

However, there are also deficiencies in the use of heterosis in self-incompatible lines: ①Self-incompatible lines have a certain degree of self-fruitfulness, especially under high temperature conditions, and the...

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  • Rape cytoplasmic male sterility + self incompatibility hybrid superiority using method

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Embodiment Construction

[0012] The specific embodiment of the present invention method is except that the selection of cytoplasmic male sterility + self-infertility is different, all the other are the same as the existing pol CMS heterosis utilization method (see "breeding and utilization of hybrid rapeseed" editor-in-chief Fu Tingdong, 2000). Specifically, it includes the selection, reproduction, seed production and cultivation of new varieties (hybrid combinations) of the three lines of cytoplasmic male sterility + self-incompatibility.

[0013] The detailed implementation plan is described as follows:

[0014] 1. Breeding of cytoplasmic male sterile + self-incompatibility lines: select self-compatible temperature-sensitive type (produces a small amount of pollen under low temperature conditions, and is completely sterile under high temperature conditions) pol CMS as the female parent, and use pol CMS that can maintain The self-incompatibility line of rapeseed with pol CMS male sterility was used ...

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Abstract

The present invention relates to crossbreeding, back crossing, etc. with temperature sensitive polCMS as female parent and selfing incompatible line capable of maintaining its incompatibility as male parent to shift the selfing incompatibility gene into the temperature sensitive polCMS and breeding cytoplasmic male sterility+ selfing incompatible line selectively from the offspring with high temperature sterility and low temperature fine powder selfing incompatibility; top crossing and back crossing of the line with available rape variety and screening to breed maintainer line and restoring line; maintaining the sterile and selfing incompatibility of the cytoplasmic male sterility+ selfing incompatible line with the maintainer line and restoring the bearing capacity of the cytoplasmic male sterility+ selfing incompatible line with the restoring line to form the matched three lines. The present invention has low breeding cost and risk, high hybrid purity and high heterosis.

Description

technical field [0001] The invention belongs to the improvement of a method for utilizing rapeseed heterosis, and in particular relates to a new method for utilizing rapeseed cytoplasmic male sterility + self-incompatibility three-line heterosis. Its application can effectively reduce the risk of hybrid seed production, improve the purity of hybrids and the intensity of heterosis, thereby increasing the yield of rapeseed, increasing economic income, and promoting the development of rapeseed industry. Background technique [0002] Rapeseed (including Brassica oleracea, Chinese cabbage and mustard) is an important source of edible vegetable oil in my country and even the world. The plant vegetative body of double-low rapeseed can be used as a vegetable or as a feed. It is an excellent source of dietary protein. For a long time, increasing the yield per unit area has been the primary goal of rapeseed research and production, and the use of heter...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 王汉中沈金雄刘贵华郑元本陈吾新王新发杨庆金河成
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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