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Rapid three-line sterile line breeding method for paddy rice

A technology of three-line sterile lines and sterile lines, which is applied in the field of rapid breeding of three-line sterile lines in rice, can solve the problems of long breeding time and inability to adapt to the needs of rice production, etc.

Inactive Publication Date: 2017-12-15
GUIZHOU CROP VARIETIES RESOURCE INST
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AI Technical Summary

Problems solved by technology

The traditional three-line male sterile line such as figure 1 As shown, the breeding time of this program is relatively long, and it usually takes 6-10 years to obtain a stable sterile line, which results in the new three-line male sterile line obtained being stable and unable to meet the needs of rice production.

Method used

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  • Rapid three-line sterile line breeding method for paddy rice
  • Rapid three-line sterile line breeding method for paddy rice
  • Rapid three-line sterile line breeding method for paddy rice

Examples

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Embodiment 1

[0018] Step 1: Refer to figure 1 and image 3 As shown, in this example, Pinzi 3B with high quality and strong combining ability was selected as the female parent, and Chengfeng B with strong resistance was used as the male parent for hybridization to obtain the hybrid F 1 , and then self-cross to get F 2 Certainly, the technical scheme of the present invention is not only able to be implemented in the above-mentioned varieties, and the technical scheme of the present invention can also be applied to carry out rapid breeding in other rice varieties. The target traits carried by the female parent and the male parent are not limited to high quality, strong combining ability, strong resistance, etc. Those skilled in the art can selectively select suitable target traits for rapid breeding according to the technical solution of the present invention. .

[0019] Step Two: Plant F 2 Generation segregation population, select a single plant with excellent traits of both parents and...

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Abstract

The invention discloses a rapid three-line sterile line breeding method for paddy rice, which includes the following steps: maintainer lines A and B, the excellent traits of which complement each other, are chosen to be hybridized, so that F1 is obtained, and F2 is then obtained by selfing; individual plants which are suitable for a breeding objective are chosen from the F2 population, the backcrossing of sterile cytoplasm is carried out, and a sterile line is rapidly stabilized. In segregative generations, the method adopts the combination of mixed pollination and individual plant selection, consequently, workload is greatly decreased, the sterile line is rapidly stabilized, and the breeding time is greatly shortened.

Description

technical field [0001] The invention belongs to the technical field of rice breeding, and specifically relates to a rapid breeding method for three-line male sterile lines of rice. Background technique [0002] Since the discovery of wild sterile rice plants in 1964, Chinese hybrid rice has achieved three-line matching in 1973, and it has been widely promoted across the country in 1976, which has promoted a large-scale increase in rice production in China. But in recent years, the yield of three-line hybrid rice has been hovering. Among them, the breeding of excellent three-line male sterile lines is an important factor restricting the yield increase of three-line hybrid rice. The traditional three-line male sterile line such as figure 1 As shown, the breeding time of this program is relatively long, and it usually takes 6-10 years to obtain a stable sterile line, so that the obtained new three-line sterile line cannot meet the needs of rice production when it is stable. ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 陈能刚鄢小青黎小冰陈惠查谭金玉阮仁超焦爱霞
Owner GUIZHOU CROP VARIETIES RESOURCE INST
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