Polymerization breeding method for rice

A technology of aggregation breeding and rice, which is applied in the field of breeding, can solve the problems of comprehensive utilization and trait aggregation that have not yet been effectively carried out, and achieve the effects of convenient and feasible breeding selection, short breeding cycle, simple and efficient breeding process

Inactive Publication Date: 2015-01-14
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the comprehensive utilization and trait aggregation of mutants with different excellent traits have not been effectively carried out.

Method used

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  • Polymerization breeding method for rice
  • Polymerization breeding method for rice
  • Polymerization breeding method for rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 A rice rapid aggregation breeding method based on the targeted target rice key variety "Yangdao No. 6"

[0024] The rice breeding materials used in Example 1 are: the backbone variety "Yangdao No. 6" and its mutation-resistant mutant "Zhemidao No. 1", the tall and strong stem mutant "Zhedao No. 1", Insect mutant "Zhe Kangdao No. 1" and multi-tiller mutant "Zhe Duo Pai Dao".

[0025] Among the corresponding breeding materials, "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. Prominent mid-indica late-maturing conventional rice varieties can be purchased from Jiangsu Lixiahe Academy of Agricultural Sciences.

[0026] The disease-resistant mutant "Zhemidao No. 1" is a mutant with extremely compact plant type and strong resistance to sheath blight, which was selected by the mutation of "Yangdao No. 6" of Zhejiang U...

Embodiment 2

[0045] Example 2 A rice rapid aggregation breeding method based on the targeted target rice key variety "Zhehui 7954"

[0046] The rice breeding materials used in this example are: the backbone variety "Zhehui 7954" and its quality mutant "Zhefu 111" produced by mutagenesis, the long-grain mutant "Zhehui 7954-LG2", and the large-grain mutant "Zhehui 7954-LG2". Hui 7954-BG3" and the late-maturing mutant "LR7954".

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Abstract

The invention discloses a polymerization breeding method for rice. The polymerization breeding method for the rice comprises the following steps: selecting and determining a backbone variety of rice, taking four mutant varieties of the backbone variety of the rice as breeding materials, wherein different mutant varieties at least have one different excellent agronomic trait; grouping the four mutant varieties into two groups, mutually hybridizing the two mutant varieties in the first pair to obtain first double-cross F1<++> plants, and mutually hybridizing the two mutant varieties in the second pair to obtain second double-cross F1<++> plants; mutually hybridizing the first double-cross F1<++> plants and the second double-cross F1<++> plants to obtain four-way-cross F1<++++> plants; carrying out selfing on the four-way-cross F1<++++> plants, selecting four mutant varieties in four-way-cross F2<++++> plants and polymerizing to obtain a single polymerization plant with excellent agronomic trait; and systemically breeding the posterities of the single polymerization plant. The high-speed polymerization breeding method for the rice is simple, convenient and efficient, and is short in breeding period.

Description

technical field [0001] The invention belongs to the technical field of breeding, and in particular relates to a rice aggregation breeding method. Background technique [0002] In order to improve the comprehensive performance of rice disease resistance, insect resistance, quality and yield, multi-trait aggregation breeding is an important technical means. The specific breeding method is to cross and backcross breeds with completely different genetic backgrounds with different excellent traits and a variety with good comprehensive traits respectively. [0003] The Chinese patent document with the publication number CN102754591A discloses a method for breeding multi-resistant rice germplasm, comprising the following steps: the parent P1 carrying the bacterial blight resistance genes Xa21 and Xa23 at the same time and the parent P1 carrying the blast resistance gene Pi at the same time -K h Crossbreed with Pi-1's parent P2 to obtain hybrid F1; plant F1, harvest at maturity to...

Claims

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Application Information

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Patent Type & Authority Applications(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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