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A kind of hybrid rice seed production method

A technology for hybrid rice and seeds, which is applied in the fields of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of comprehensive and better utilization that have not yet been effectively carried out, and achieve simple and efficient breeding process, short breeding cycle, and easy operation Effect

Active Publication Date: 2016-08-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the comprehensive and better utilization of mutants with different excellent traits has not been effectively carried out, especially in hybrid rice breeding and seed production

Method used

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  • A kind of hybrid rice seed production method
  • A kind of hybrid rice seed production method
  • A kind of hybrid rice seed production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Hybrid rice seed production technology based on the target hybrid rice combination Yangliangyou 6 (Guangzhan 63-4S / Yangdao 6)

[0024] The target hybrid rice combination selected in Example 1 is Yangliangyou 6 (Guangzhan 63-4S / Yangdao 6).

[0025] Seed material is:

[0026] The two-line CMS line S "Guangzhan 63-4S" was selected by the Northern Hybrid Japonica Rice Research Center and Hefei Fengle Seed Industry Co., Ltd., the variety application number: 20030472.0, and can be purchased from Hefei Fengle Seed Industry Technology Co., Ltd. .

[0027] The target restorer line R "Yangdao 6" was bred by Jiangsu Lixiahe Regional Agricultural Science Research Institute, and passed the approval of Jiangsu, Anhui, and Hubei Crop Variety Approval Committees in 1997, 2000, and 2001. Excellent and prominent mid-indica late-maturing conventional rice varieties can be purchased from Jiangsu Lixiahe Regional Agricultural Science Research Institute.

[0028] The disease-res...

Embodiment 2

[0045] Example 2 Hybrid rice seed production technology based on the target hybrid rice combination Yang II You 7954 (II-32A / Zhehui 7954)

[0046] In this example, the target hybrid rice combination Yang II You 7954 (II-32A / Zhe Hui 7954) was selected.

[0047] Seed material is:

[0048] The three-line CMS line A "II-32A", bred by the China Rice Research Institute, is a hybrid rice CMS line with public welfare intellectual property rights.

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Abstract

The invention discloses a hybrid rice breeding method. The method comprises the following steps: preparing breeding materials, which comprise sterile lines and restorer lines for seed breeding and N types of mutants from the restorer lines, wherein different mutants have at least one unique excellent agronomic trait; making the restorer lines and N mutants carry out hybrid hybridization with the sterile lines so as to obtain seeds of hybrid rice in (N+1) types; and mixing the different type hybrid rice seeds so as to obtain the hybrid rice seed. The hybrid rice seed obtained by the provided breeding method has the excellent characteristics of disease resistance and high yield. Moreover, the preparation method has the advantages of shorter breeding period, simpleness, and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of hybrid seed production, in particular to a hybrid rice seed production method. Background technique [0002] The traditional crop single-variety production and planting methods and breeders have always adopted the breeding strategy of selecting the best from the best, which makes the genetic basis of varieties narrower and narrower, the ability to resist diseases, insect pests and adversity is getting weaker and weaker, and the biodiversity is declining rapidly. At present, rice breeding is facing the limitation that the genetic base is narrower and narrower, and the varieties (combinations) are difficult to surpass in terms of resistance, quality and yield. [0003] To avoid the problems and risks of single varieties, one solution is to carry out genetically diverse rice breeding. The specific breeding methods are as follows: one is to cross and backcross a variety with different excellent traits (such ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 吴殿星舒小丽王寅孙健张宁熊海铮
Owner ZHEJIANG UNIV
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