Breeding method of high-quality two-line rice sterile line

A high-quality, rice technology, applied in the fields of botanical equipment and methods, applications, plant genetic improvement, etc., can solve problems such as limited rice yield improvement

Inactive Publication Date: 2021-05-07
湖南省春云农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that the sterile line o

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The rice high-quality two-line male sterile line breeding method of the present embodiment comprises the steps:

[0075] 1) On November 20, the rice seeds were sown in Sanya and transplanted 15 days after sowing;

[0076] The rice seed is Zhenliangyoudizhan which is a two-line hybrid; when transplanting, a single plant is used, with a row spacing of 6*6 inches, and a single plant of 0.5 mu;

[0077] 2) Step 1) After planting, record the growth situation, which includes the shape of the leaves, the number of leaves, the height of the plant, the number of tillers in the tillering stage, and then mark and eliminate the plants that meet one of the following conditions:

[0078] a. The leaf shape is obviously deformed or there are obvious visible lesions;

[0079] b. 45 days after planting, the number of leaves is less than 8;

[0080] c. The plant height is less than 50cm 45 days after planting;

[0081] d. The number of tillers in the tillering stage is greater than 3; ...

Embodiment 2

[0094] The rice high-quality two-line male sterile line breeding method of the present embodiment comprises the steps:

[0095] 1) On November 10, the rice seeds were sown in Sanya, and transplanted 12 days after sowing;

[0096] The rice seed is Zhenliangyoudizhan, which is a hybrid of two lines; when transplanting, a single plant is used, with a row spacing of 6*6 inches, and a single plant of 1 mu;

[0097] 2) Step 1) After planting, record the growth situation, which includes the shape of the leaves, the number of leaves, the height of the plant, the number of tillers in the tillering stage, and then mark and eliminate the plants that meet one of the following conditions:

[0098] a. The number of leaves is less than 6 45 days after planting;

[0099] b. The plant height is less than 45cm 45 days after planting;

[0100] c. The number of tillers in the tillering stage is greater than 3;

[0101] 3) Observing and recording the flowering situation of the single plant reta...

Embodiment 3

[0112] The rice high-quality two-line male sterile line breeding method of the present embodiment comprises the steps:

[0113] 1) On November 30 of that year, the rice seeds were sown in Sanya and transplanted 18 days after sowing;

[0114] The rice seed is Zhenliangyoudizhan, which is a hybrid of two lines; when transplanting, a single plant is used, with a row spacing of 6*6 inches, and a single plant of 0.8 mu;

[0115] 2) Step 1) After planting, record the growth situation, which includes the shape of the leaves, the number of leaves, the height of the plant, the number of tillers in the tillering stage, and then mark and eliminate the plants that meet one of the following conditions:

[0116] a. The number of leaves is less than 6 45 days after planting;

[0117] b. The plant height is less than 45cm 45 days after planting;

[0118] c. The number of tillers in the tillering stage is greater than 3;

[0119] 3) Observing and recording the flowering situation of the sin...

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Abstract

The invention relates to the technical field of hybrid rice breeding, and particularly discloses a breeding method of a high-quality two-line rice sterile line. The breeding method of the high-quality two-line rice sterile line comprises the following steps: (1) sowing rice seeds in a first breeding field, and transplanting; (2) observing the growth condition, the flowering condition and the fruiting condition of transplanted single plants, screening the single plants according to the growth condition, the flowering condition and the fruiting condition, eliminating the selected fertile single plants, and screening out sterile single plants; (3) planting the sterile single plants screened out in the step (2) in a second breeding field, and screening out single plants which cannot bear fruits; and (4), in the first breeding field or the second breeding field, conducting directional hybridization on the single plants which cannot bear fruits and stress-resistant varieties and planting, and conducting test matching from the advanced generation until obtaining the sterile line. The sterile line obtained through the breeding method of the high-quality two-line rice sterile line is better in quality and yield increasing performance.

Description

technical field [0001] The application relates to the technical field of hybrid rice breeding, more specifically, it relates to a method for breeding high-quality two-line male sterile lines of rice. Background technique [0002] As the country pays more and more attention to the grain seed industry, the seed production industry of various grain crops will develop rapidly. Rice is the most important food crop. The main method of rice breeding is hybrid breeding. Hybrid rice research has gone through half a century in my country, and the cumulative increase in rice production has exceeded 700 billion kilograms, making important contributions to food security. [0003] Male sterile lines play an important role in rice hybrid seed production and increase agricultural yield. Therefore, the selection of male sterile lines is very important for crop breeding and agricultural production. Compared with the three-line method, the two-line method is not restricted by the restoration ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 贺彭毅
Owner 湖南省春云农业科技股份有限公司
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