Method for securing purity of seeds for rice by bilinear hybridization

A hybrid rice and seed technology, which is applied in botany equipment and methods, rice cultivation, plant genetic improvement, etc., can solve the hidden dangers of seed production purity, and achieve the effects of ensuring seed production purity, improving seed purity, and reducing risks
CN1537419AInactive Publication Date: 2004-10-20JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
Publication Date
2004-10-20
Estimated Expiration
Not applicable · inactive patent
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Abstract

A method for ensuring the purity of seeds in preparing the rice seed by two-line hybridization features that when the average temp per day is lower than 23.5 deg.C during 5-15 days before the female parent is in the ear, the water at the temp higher than 25 deg.C is used for deep irrigation for improving the small-area weather in field, and when said average temp is raised to 23.5 deg.C, the water is drained.
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Description

technical field

[0001] The invention relates to a method for ensuring seed purity in two-line hybrid rice seed production, which is suitable for two-line hybrid rice seed production with a sterile line fertility transition temperature below 24°C. Background technique

[0002] my country's two-line hybrid rice research has achieved world-leading theoretical and practical results. By 2003, the cumulative planting area had exceeded 5 million hectares 2 . The research on super hybrid rice using the two-line method as a technical approach has also achieved breakthrough results. The two-line super rice Liangyoupeijiu bred by the applicant unit was the first in China to achieve the first phase of China’s super rice breeding goal, and was awarded the 2000 my country’s Science and Technology Progress The top ten news. According to incomplete statistics, the combination has planted 3.5 million hm 2 , is the two-line hybrid rice with the largest planting area at home and abroad. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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