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Technology for making male sterile of female lines for rice hybridization

A technology of hybrids and self-breds, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of heavy labor and difficult to remove, so as to save manpower and material resources, avoid losses, and ensure production purity Effect

Inactive Publication Date: 2003-05-21
湖北省农业科学院农业现代化研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of mark removal is that it needs to be manually operated in the field, which is labor-intensive and difficult to remove.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] Select the female parent 8077 with the recessive traits sensitive to amide or urea paddy herbicides and restorer lines to prepare hybrids. After the hybrid F1 is sown to the 5.0 leaf age, follow the herbicide supplier's recommended field herbicide application concentration Or dosage, evenly apply amide or urea paddy field herbicides in the seedling field. After spraying, the mixed 8077 self-bred seedlings were inhibited from growing, their leaves were yellowed, and they could not grow normally, while the real F1 generation hybrid seedlings grew normally and had no symptoms of damage. Therefore, when 8077 encounters abnormal low temperature during seed production and self-breeding occurs, the purpose of using chemical agents to selectively kill the self-breeding seedlings after sowing the prepared hybrid seeds is realized.

[0035] The above-mentioned method can be used for the purity preservation of hybrid seed production of rice environment-sensitive male sterile lines...

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PUM

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Abstract

A technique for eliminating female parent self-bred seedlings from the hybridized rice seedlings with herbicide features that the female parent with recessive character of sensitive lethality to bentazon is chosen to hybridize with recovery line and during the stage from green presentation to ear sprouting the solution of bentazon (10 mg / L-5000 mg / L) is sprayed onto their leaves to eliminate said self-bred seedings for keeping the high-purity of hybridized rice seedlings. It can be used in high-speed discrimination of purity for hybridized rice seedlings.

Description

Technical field: [0001] The invention belongs to a production method for improving the purity of rice hybrids, in particular to a method for removing impurities from female parental self-bred seedlings by using herbicides in rice hybrid F1 generation seedlings. Background technique: [0002] Rice is a self-pollinating crop. The female parent used for hybrid seed production must have the characteristics of male sterility. But in many cases, the male sterility of the breeding female parent is not complete. For example, the light (temperature) sensitive male sterile line controlled by light and temperature, if it encounters abnormal low temperature during seed production, it will lead to partial recovery of fertility and self-crossing phenomenon. Another example is male sterility caused by chemical agents. Due to differences in agents and application conditions, incomplete male sterility sometimes occurs and self-fertilization occurs. The incomplete male sterility of the fem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 张集文武晓智
Owner 湖北省农业科学院农业现代化研究所
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