A method for cultivating three-line hybrid rice combinations

A technology of three-line hybrid rice and strong dominant combination, applied in the field of breeding three-line hybrid rice combination

Inactive Publication Date: 2016-06-01
江西省农业科学院水稻研究所
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  • Abstract
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Problems solved by technology

[0006] The invention provides a method for cultivating a three-line hybrid rice combination, aiming at solving the potential risk of hybrid rice due to the long-term promotion of a single cytoplasmic source

Method used

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  • A method for cultivating three-line hybrid rice combinations
  • A method for cultivating three-line hybrid rice combinations

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the invention.

[0019] figure 1 The implementation flow of the method for cultivating a three-line hybrid rice combination provided by the embodiment of the present invention is shown.

[0020] The method includes the following steps:

[0021] In step S101, the "Dongye type" cytoplasmic male sterile line is used as the female parent, and the "Dongye type" cytoplasmic male sterile line is used as the male parent to carry out extensive testing and mating groups to obtain the "Dongye type" and "three lines" "Hybrid rice test cross combination;

[0022] In step S102, the obtained "East wild type" and "Three-line" hybrid...

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Abstract

The invention discloses a method for cultivating three-line hybrid rice combinations. The method comprises the following steps: carrying out wide test-crossing and matching by taking a 'Dongye-type' cytoplasm male sterility line as a female parent and taking a 'Dongye-type' cytoplasm male sterility restoring line as a male parent so as to obtain 'Dongye-type' 'three-line' hybrid rice test-crossing combinations; carrying out dominant comparison test on the 'Dongye-type' 'three-line' hybrid rice test-crossing combinations, and screening 'Dongye-type' 'three-line' hybrid rice dominant combinations; carrying out multi-point comparison test on the 'Dongye-type' 'three-line' hybrid rice dominant combinations, and screening 'Dongye-type' 'three-line' hybrid rice shoot combinations. According to the invention, novel cytoplasm source three-line hybrid rice combinations are cultivated by cultivating the cytoplasm male sterility line and the restoring line thereof with novel male sterile cytoplasm sources continuously; the method is a universal method for cultivating the 'Dongye-type' 'three-line' hybrid rice; the problem that the hybrid rice generates a potential hazard because single cytoplasm source is popularized for a long time is solved effectively.

Description

technical field [0001] The invention belongs to the technical field of hybrid rice breeding, in particular to a method for cultivating a three-line hybrid rice combination. Background technique [0002] Since the 1970s, a variety of rice cytoplasmic male sterile lines (CMS) from different sources have been bred by interspecific hybridization and nuclear replacement. [0003] At present, rice cytoplasmic male sterile lines from different sources used in production can be generally divided into wild-type (WA-CMS), Baotai-type (BT-CMS) and Honglian-type (HL- CMS) and other three major male sterile cytoplasmic types. [0004] Cultivate the cytoplasm of the new type of cytoplasm with different recovery and preservation relationship with the three main male sterile cytoplasm types (WA-CMS), Baotai type (BT-CMS) and Honglian type (HL-CMS) Male sterile lines and their hybrid rice combinations, promoting the diversity of hybrid rice cytoplasm and avoiding the potential risks of hyb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 沈显华严松黄仁良沈林军熊宏亮朱珊
Owner 江西省农业科学院水稻研究所
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