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Mechanization seed making method of hybridized rice using three line method

A technology of hybrid rice and three-line method, which is applied in the field of mechanized production of three-line hybrid rice seeds, can solve the problems of low seed production quality, high labor intensity, and low seed production efficiency, so as to improve the quality of seed production, increase efficiency, The effect of saving man-hours

Inactive Publication Date: 2003-09-17
曹立勇
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is the mechanization of hybrid rice seed production, to overcome the above-mentioned disadvantages of separate planting, artificial powdering, and separate harvesting, low seed production efficiency, high labor intensity, and low seed production quality, and provide three-line method hybridization Rice Mechanized Seed Production Method

Method used

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Embodiment Construction

[0025] The mechanized seed production method of three-line hybrid rice uses an indica wide-compatibility variety Dular with brown hull color (which has a large color difference from normal hull color and is used as a brown hull mark) to cooperate with the maintainer line with normal hull color. Qingzao B was crossed, and a maintainer line with brown chaff color was selected from it, and then it was bred into a male sterile line with brown chaff color (called "color selection A"); When hybrid seed production of the restorer line is carried out, an airplane is used for direct seeding, and the airflow generated by the helicopter is used to catch the powder during the flowering period. Hybrid seeds with brown husk and restorer seeds with normal husk color; the single recessive bentazone lethal gene was introduced into the maintainer line with brown husk color, and the brown husk color was directly seeded by airplane when breeding the sterile line The seeds of the sterile line and ...

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Abstract

A mechanized method for preparing the seeds of three-line hybridized paddy rice includes such steps as hybridizing the rice whose husk color is different from rormal color with the maintenance line whose husk color is normal to obtain the maintenance-line seeds whose husk color is different from normal color; transfer culturing of the sterile-line seeds whose husk color is different from normal color, mixing the maintenance-line seeds with the sterile-line seeds, mechanical sowing, harvesting; and further using color selecting machine for color separation to obtain the hybridized seeds and recovery-line seeds.

Description

technical field [0001] The invention belongs to rice breeding, and relates to hybrid rice seed production technology, in particular to a method for mechanized production of three-line hybrid rice seeds. Background technique [0002] The utilization of heterosis in rice (Oryza sativa L.) can be divided into three-line method and two-line method. At present, the utilization of heterosis is mainly based on the three-line method. The main way to utilize the heterosis of rice in the three-line method is to achieve strong selection by cultivating the male sterile line (A), the male sterile maintainer line (B) and the male sterile restorer line (R) (collectively called the three lines). The purpose of combining advantages. As early as 1958, Kiyoshi Katsuo of Tohoku University in Japan carried out research on male sterile lines for the use of rice heterosis, and found that China's red awn wild rice could cause male sterility in Fujisaka 5. In 1966, Xincheng C...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 曹立勇程式华何立斌杨长登
Owner 曹立勇
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