Novel three-line method for mechanical production of hybrid rice seeds

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 efficiency, high labor intensity, and low seed production quality, and achieves improved efficiency, saved man-hours, and improved seed production. quality effect

Inactive Publication Date: 2012-05-30
DALIAN ZHAOYANG SOFTWARE TECH
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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 pow

Method used

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Embodiment Construction

[0025] The mechanized seed production method of three-line hybrid rice uses the indica wide-compatibility variety Dular with brown husk color (which has a large color difference from normal husk color and is used as a mark of brown husk) to cooperate with the maintainer line with normal husk 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 l...

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Abstract

Disclosed is a three-line method for mechanical production of hybrid rice seeds. The method is characterized in that a rice variety with hull color different from normal hull color (abnormal color) is selected to hybridize with a maintainer line rice variety with normal hull color so as to obtain maintainer line rice seeds with abnormal hull color, and trans-breeding is performed to obtain sterile line rice seeds with abnormal hull color; and that the obtained sterile line rice seeds with abnormal hull color and restorer line rice seeds with normal hull color are mechanically sown in a mixed manner, mechanical pollen shedding is carried out during the blooming stage, hybrid rice seeds with abnormal hull color and restorer line rice seeds with normal hull color obtained by rice selfing are mechanically harvested, and hybrid seeds and restorer line seeds are separated by use of a color sorter. The method of the invention can be applied to hybrid rice seed production.

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 heterosis utilization is mainly based on the three-line method. The main way to utilize the heterosis of rice in the three-line method is to cultivate the male sterile line (A), the male sterile maintainer line (B), and the male sterile restorer line (R) (collectively referred to as three lines), so as to achieve strong selection. 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 Changyou of the ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01G16/00A01G22/22
Inventor 栾晓健
Owner DALIAN ZHAOYANG SOFTWARE TECH
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