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Three-way cross combination breeding method for water-saving drought resisting hybrid rice

A technology of hybrid rice and rice, applied in the field of breeding, can solve problems such as insufficient flowering habits

Inactive Publication Date: 2008-07-16
SHANGHAI AGROBIOLOGICAL GENE CENT
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  • Summary
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AI Technical Summary

Problems solved by technology

[0004] Since the breeding of male sterile lines of water-saving and drought-resistant rice is still in its infancy, the cultivated sterile lines often have deficiencies in flowering habits, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1 Three-cross combination breeding method

[0013] In this example, "Zhongzhe A" (available from the China Rice Research Institute) was used as the rice sterile line (A1), and "Shanghai Han 1B" (available from Shanghai Sangrui Agricultural Technology Co., Ltd.) was used as the water-saving and drought-resistant rice maintenance line. Line (B2), "Hanhui No. 2" or "Hanhui No. 3" (available from Shanghai Sangrui Agricultural Technology Co., Ltd.) are water-saving and drought-resistant rice restoration lines (R).

[0014] Using "Zhongzhe A" as the female parent and "Shanghai 1B" as the male parent, a heterozygous water-saving and drought-resistant rice sterile line (namely "Zhongzhe A / Shanghai 1B") was produced. The hybrid has a high The male sterile line meets the requirements of the sterile line in hybrid rice production.

[0015] Using the above-mentioned heterozygous male sterile line as the female parent and "Hanhui No. 2" or "Hanhui No. 3" as the male parent,...

Embodiment 2

[0018] Example 2 Three-cross combination breeding method

[0019] In this example, "Zhongzhe B" (available from the China Rice Research Institute) was used as the rice maintainer line (B1), and "Shanghai Han 1A" (available from Shanghai Sangrui Agricultural Technology Co., Ltd.) was used as the water-saving and drought-resistant rice sterile line. Line (A2), "Hanhui No. 2" or "Hanhui No. 3" (available from Shanghai Sangrui Agricultural Technology Co., Ltd.) are water-saving and drought-resistant rice restoration lines (R).

[0020] Using "Zhongzhe B" as the male parent and "Shanghai 1A" as the female parent, a heterozygous water-saving and drought-resistant rice sterile line (namely "Zhongzhe B / Shanghai 1A") was produced. The hybrid has a high The male sterile line meets the requirements of the sterile line in hybrid rice production.

[0021] Using the above-mentioned heterozygous male sterile line as the female parent and "Hanhui No. 2" or "Hanhui No. 3" as the male parent, ...

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Abstract

The invention provides a triallel mating breeding method for water-saving and drought-resistance rice. The method of the invention firstly takes a rice sterile line A1 as a female parent and a maintenance line B2 for the water-saving drought-resistance rice as a male parent to prepare a mixed sterile line A1 / B2 for the water-saving drought-resistance rice, or takes a sterile line A2 of the water-saving drought-resistance rice as a female parent and a rice maintenance line B1 as a male parent to prepare a mixed sterile line A2 / B1 for the water-saving drought-resistance rice; and then takes the mixed sterile line A1 / B2 or A2 / B1 for the water-saving drought-resistance rice or the mixed sterile line A2 / B1 for the water-saving drought-resistance rice as the female parent and takes a restorer line R of the water-saving drought-resistance rice as the male parent to prepare a triallel mating A1 / B2 / / R or A2 / B1 / / R of the water-saving drought-resistance rice. The triallel mating hybrid rice bred by the invention has a remarkably fortified drought-resistance capacity.

Description

technical field [0001] The invention relates to a breeding technology, in particular to a breeding method of a three-cross combination of water-saving and drought-resistant hybrid rice. Background technique [0002] The shortage of water resources is becoming more and more serious, and agricultural water, especially rice water, consumes a large amount of fresh water resources. Since a large number of low-yield fields rely on rain-fed, or due to the serious shortage of water sources and irrigation facilities, drought is one of the main limiting factors for the average yield and stable yield of rice in large areas. Improving the drought resistance of popularized rice varieties is the most effective technology to solve the above problems measure. [0003] Rice drought resistance research and new variety breeding are one of the hotspots in global agricultural research. However, most of the conventional upland rice varieties currently used in production are far behind the latest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 罗利军张安宁余新桥梅捍卫李名寿
Owner SHANGHAI AGROBIOLOGICAL GENE CENT
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