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Honglian type method for breeding japonica hybrid rice

A technology of hybrid japonica rice and red lotus type, which is applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of insufficient stability of sterility and single cytoplasm, and achieve the solution of insufficient stability of sterility, sterility Sexual stability, solving the effect of single cytoplasm

Inactive Publication Date: 2009-01-21
YANGZHOU UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to realize the matching of three lines of red lotus type japonica rice by breeding red lotus type japonica rice sterile line and restorer line, and cultivate red lotus type japonica hybrid rice to solve the sterility of hybrid japonica rice BT type sterile line in current production Insufficient stability and the problem of single cytoplasm

Method used

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  • Honglian type method for breeding japonica hybrid rice
  • Honglian type method for breeding japonica hybrid rice
  • Honglian type method for breeding japonica hybrid rice

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Experimental program
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Embodiment

[0024] Example: Breeding of Red Lotus Type Hybrid Japonica Rice

[0025] The process of selection method is as follows: figure 1 shown

[0026] 1. Transplanted red lotus-type japonica male sterile line:

[0027] 1.1 The indica CMS line with red lotus cytoplasm was used to transform the red lotus japonica CMS line.

[0028] In 1992, the japonica rice line Liuqianxin was selected as the recurrent parent and crossed with the red lotus indica CMS line Congguang 41A and backcrossed continuously for multiple generations until BC 5 f 1 , the basic traits of the transgenic offspring are the same as Liuqianxin, and the comprehensive traits are consistent, and the sterility is stable, that is, the red lotus type japonica CMS line Liuqianxin A is bred, and the transgenic process is as follows:

[0029] In the season of 1992, Yangzhou red lotus type Congguang 41A×Liuqianxin

[0030] ↓

[0031] 1992-1993 Hainan F 1 × six thousand Xin

[0032] ...

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Abstract

A honglian-type hybrid japonica rice breeding method pertains to an application technique in the technical field of biology and modern agriculture, and is applicable to three-line japonica rice heterosis utilization. The honglian-type hybrid japonica rice breeding method comprises the following steps: honglian-type sterile cytoplasm of indica type rice is introduced to the japonica rice variety for transformation breeding of the honglian-type japonica rice sterile line; the honglian-type japonica rice sterile line is used for the test-cross screening or hybridization breeding of the honglian-type japonica rice restoring line; the honglian-type hybrid japonica rice is bred by selected mating of the honglian-type japonica rice sterile line and the honglian-type japonica rice restoring line. By breeding the honglian-type japonica rice sterile line and the corresponding restoring line to breed the honglian-type hybrid japonica rice, the honglian-type hybrid japonica rice breeding method solves the problem that the hybrid japonica rice BT sterile line in the existing production has unstable sterility and haploid cytoplasm and realizes three-line matching of the honglian-type japonica rice.

Description

technical field [0001] The invention belongs to the applied technology in the technical fields of biology and modern agriculture, and is suitable for utilizing the heterosis of japonica rice by three-line method. Background technique [0002] The planting area of ​​hybrid indica rice in my country accounts for about 80% of the total planting area of ​​indica rice, and the promotion of three-line hybrid rice is the main method, among which the use of wild-type sterile lines is more common, and red lotus-type sterile lines are rarely used. The popularization area of ​​hybrid japonica rice is small, accounting for only 3% of the total planting area of ​​japonica rice, and the BT type male sterile line is mainly used. The three cytoplasmic sterile lines of wild abortive type, red lotus type and BT type have different recovery relationships, pollen abortion stages and characteristics, and fertility inheritance methods, and are generally considered to be three representative types...

Claims

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Application Information

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IPC IPC(8): A01H1/04A01H1/02
Inventor 汤述翥顾铭洪张宏根程祝宽梁国华严长杰刘巧泉于恒秀陆驹飞裔传灯龚志云
Owner YANGZHOU UNIV
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