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Production method of rose violet type three lines hybridization paddy seeds

A technology of three-line hybrid rice and its production method, which is applied in the field of utilization of crop rice heterosis, can solve the problems of poor rice quality, exacerbation of single source of cytoplasmic source of wild-type male sterility, etc., and achieve the goal of increasing yield and strong heterosis Effect

Inactive Publication Date: 2005-01-26
李传国 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is that the combination of three-line hybrid rice planted in production generally has the problem of poor rice quality
The second is that the homogenization of wild-type male sterile cytoplasm contained in three-line hybrid rice is becoming more and more serious

Method used

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  • Production method of rose violet type three lines hybridization paddy seeds
  • Production method of rose violet type three lines hybridization paddy seeds
  • Production method of rose violet type three lines hybridization paddy seeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Parent (1): Yuetai A (bred by Rice Research Institute of Guangdong Academy of Agricultural Sciences)

[0018] Parent (2): Yangdao 6 (bred by the Agricultural Science Institute of Lixiahe District, Jiangsu Province)

[0019] Yuetai A×Yangdao 6→Yueyou 6 (three-line hybrid)

[0020] 1. The traits and breeding process of Yuetai A:

[0021] 1.1 Traits and characteristics

[0022] 1.1.1 Sterility

[0023] The sterile rate of the thousand-plant population of the sterile line reaches 100%, and the pollen sterility rate reaches 99.9%.

[0024] 1.1.2 Growth period

[0025] It was sown in early March in Guangzhou, and the days from sowing to the first ear of the CMS line were 90-93 days; it was sown in late July in Guangzhou, and the days from sowing to the first ear of the CMS line were 69-73 days; in Sanya City, Hainan Province It was sown in early January, and the days from sowing to the first ear of the sterile line were 96-99 days.

[0026] 1.1.3 Quality

[0027] The g...

Embodiment 2

[0073] Parent (1): Yuetai A (bred by Rice Research Institute of Guangdong Academy of Agricultural Sciences)

[0074] Parents (2): R938 (bred by inventor Li Chuanguo before entering the current unit)

[0075] Yuetai A×R938→Yueyou 938 (three-line hybrid)

[0076] 1. The characteristics and breeding process of the restorer line R938:

[0077] 1.1 Traits and characteristics

[0078] 1.1.1 Restoration

[0079] The anthers of the F1 generation crossed with the red lotus CMS line and R938 are hypertrophic, flowering and pollination are normal, and the seed setting rate is generally about 85%. Cracking, the firmness rate is only about 30%. Therefore, R938 belongs to the germplasm of red lotus indica restorer line.

[0080] 1.1.2 Growth period

[0081] It was sown in early March in Guangzhou, and the restorer line was sown to the first ear about 101-103 days ago; it was sown in early December in Sanya City, Hainan Province in winter, and the time from sowing to the first ear was ...

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Abstract

The invention relates to honglian type three-line hybridized rice seed production method, which characterized as: hybridizing honglian type sterile-line parent yuetai A and honglian type restoring line parent yangdao 6 or R938 to produce hybrid species. The inventive method accomplishes high quality of hybridized rice on the basis of high yield, and solves the problem of indica rice three-line hybrid rice wild-abortive type male sterility cytoplasm source simplification. The inventive hybrid seed has low cost, high economic benefit.

Description

technical field [0001] The invention relates to a method for producing late-maturing three-line hybrid rice seeds, which belongs to the technical field of utilization of rice heterosis in crops. Background technique [0002] At present, the main ways to utilize heterosis in indica rice at home and abroad include the three-line method (sterile line, maintainer line, restorer line) based on nucleoplasmic interaction such as the wild type or red lotus type, and the two-line method based on light and temperature sensitive conditions. Law. Since 1973, when my country was the first in the world to realize the three-line combination of indica hybrid rice, my country has maintained a world-leading level in the field of rice heterosis utilization research. In the 1970s and 1980s, my country's production of Shangshanyou system and Weiyou system three-line hybrid rice developed rapidly; in the 1990s, my country's Shanyou, Weiyou, Gangyou, IIyou, Youyou, Boyou A total of hundreds of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 李传国缪炳良伍应运
Owner 李传国
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