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Three-way cross combination propagation seed cultivating method for water-saving drought resisting hybrid rice

A hybrid rice and seed breeding technology, applied in the field of hybridization, can solve problems such as insufficient flowering habit, and achieve the effects of high growth vigor and seed production potential, high seed breeding yield, and enhanced drought resistance ability.

Inactive Publication Date: 2008-07-16
SHANGHAI AGROBIOLOGICAL GENE CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • Three-way cross combination propagation seed cultivating method for water-saving drought resisting hybrid rice

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] According to the high-yield breeding technology of the sterile rice line "Zhongzhe A", "Zhongzhe A" and "Zhongzhe B" were planted in isolation, and the sterile and maintainer seeds were propagated; Breeding technology "Huhan 1A" and "Huhan 1B" are isolated and planted, and the sterile line and maintainer seeds are propagated; according to the high-yield seed breeding technology of the heterozygous sterile line "Zhongzhe A / Huhan 1B" The sterile lines and maintainer lines were used to produce the seeds of the heterozygous sterile lines; the hybrid sterile lines "Zhongzhe A / Huhan 1B" and the restorer line "Zhongzhe A / Huhan 1B" and the restorer lines were isolated and planted according to the high-yield seed production technology of water-saving and drought-resistant rice three-cross hybrids. "Hanhui No. 2", the three-cross combination seeds "Zhongzhe A / Huhan 1B / / Hanhui No. 2" were produced, and the seeds of the restorer line were propagated at the same time.

[0019] Accor...

Embodiment 2

[0022] According to the high-yield breeding technology of the sterile rice line "Zhongzhe A", "Zhongzhe A" and "Zhongzhe B" were planted in isolation, and the sterile and maintainer seeds were propagated; Breeding technology "Huhan 1A" and "Huhan 1B" were planted in isolation, and the sterile lines and maintainer seeds were propagated; according to the high-yield breeding technology of the heterozygous sterile line "Huhan 1A / Zhongzhe B", the seeds were isolated and planted The sterile lines and maintainer lines were used to produce the seeds of the heterozygous sterile lines; according to the high-yield seed production technology of water-saving and drought-resistant rice three-cross hybrids, the heterozygous sterile lines "Huhan 1A / Zhongzhe B" and the restorer lines "" "Hanhui No. 3", the three-cross combination seeds "Huhan 1A / Zhongzhe B / / Hanhui No. 3" were produced, and the seeds of the restorer line were propagated at the same time.

[0023] According to the characteristic...

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Abstract

The invention provides a triallel mating seed producing and multiplying method for water-saving drought-resistance rice which is at least provided with four seed producing and multiplying gardens that are respectively used for the seed multiplying of a rice sterile line A1 and a maintenance line B1, of an upland rice sterile line A2 and a maintenance line B2, of a rice sterile line A1 / B2 or A2 / B1 of a hybrid water-saving drought-resistance rice and of a triallel mating A1 / B2 / / R or A2 / R1 / / R of the water-saving drought-resistance rice. The invention can realize the stable seed preparation for the hybrid rice triallel mating and the triallel mating has a remarkably fortified drought-resistance capacity.

Description

technical field [0001] The invention relates to the field of hybrid technology in the utilization of heterosis, and more particularly to a seed production and propagation technology for 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 lot of freshwater resources. Drought is one of the main limiting factors for the stability of large-area average yield of rice because a large number of low- and medium-yielding fields rely on rainfed or the water source and irrigation facilities are seriously insufficient. Improving the drought resistance of rice is the most effective technical measure to solve the above problems. [0003] The research on drought resistance of rice and the selection of new varieties is one of the hotspots in global agricultural research. However, the vast majority of the currentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 罗利军余新桥梅捍卫梁文兵童汉华李名寿
Owner SHANGHAI AGROBIOLOGICAL GENE CENT
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