Quick breeding method of high-combining-ability rice three-line sterile line

A three-line sterile line and rice technology, applied in the fields of botany equipment and methods, applications, plant gene improvement, etc., can solve the problems of blindness, lack of purpose, time-consuming and labor-intensive, etc., and achieve the purpose of reducing test costs and Strong performance and high selection efficiency

Inactive Publication Date: 2019-03-12
RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a rapid breeding method for three-line male sterile lines of high-combination rice to overcome the problems of lack of purpose, large blindness, time-consuming and labor-intensive breeding of high-combination three-line male sterile lines in traditional breeding

Method used

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  • Quick breeding method of high-combining-ability rice three-line sterile line

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Embodiment 1

[0018] (1) Test material

[0019] The methods used in this example are conventional methods known to those skilled in the art unless otherwise specified, and the reagents and other materials used are all commercially available products unless otherwise specified. The rice varieties used are all commercially available varieties unless otherwise specified.

[0020] (2) Experimental method

[0021] Such as figure 1 As shown, the present example provides a rapid breeding method for a three-line male sterile line of rice, the steps of which include the acquisition of a rice male sterile line introduction line, the selection of a stable rice maintainer line, and the combining ability of a stable maintainer line of rice. Screening and the breeding of three-line male sterile line rice, concrete steps are as follows:

[0022] 1) Obtain the male sterile line introduction line BC5F1

[0023] i) Acquisition of YNS: In 1998, a recessive genital sterile material with no pollen and high ...

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Abstract

The invention discloses a quick breeding method of a high-combining-ability rice three-line sterile line. Rice recessive nucleic sterile material YNS is used as a female parent hybridized and selfed with multiple conventional rice three-line restorers; an isolated sterile plant close to the restorers in trait is used as a female parent for continued back-crossing and selfing with the restorers; asterile line that is stable and basically consistent to the restorers in trait is attained. On this basis, the sterile lines are used as female parents for test crossing with bred stable maintainer lines; the maintainer lines with high combining ability are screened out according to comprehensive agronomic traits of test crossing F1; corresponding three-line sterile lines are further bred. The method herein enables combining ability of three-line sterile lines to be measured and screened in advance; the maintainer lines with poor combining ability are removed; the three-line sterile lines withhigh combining ability are effectively bred; the breeding cost and risk are decreased.

Description

technical field [0001] The invention belongs to the field of crop breeding, and relates to a rapid breeding method for three-line sterile lines of high-combination rice. Background technique [0002] The research and application of three-line hybrid rice has greatly promoted the development of rice breeding in my country. The selection of three-line male sterile lines is the key to the application of three-line hybrid rice. High combining ability male sterile lines can produce more hybrid combinations , great utilization potential. The three-line sterile line selection cycle is long, the workload is heavy, and the blindness is strong. The finally bred sterile line may not be popularized and applied in production due to shortcomings such as poor combining ability; therefore, how to efficiently select three-line sterile lines department is particularly important. [0003] Recessive genital sterile materials were discovered earlier, and the genetic mechanism is simple, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 周坤能夏加发李泽福王元垒马廷臣云鹏
Owner RICE RES ISTITUTE ANHUI ACAD OF AGRI SCI
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