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Breeding method for disease-resistant functional rice two-line sterile line

A functional, sterile line technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve problems such as low water-soluble protein content, achieve good nutritional and health care effects, excellent agronomic and yield traits, Enhances gut health effects

Active Publication Date: 2015-06-03
FUJIAN HEFENG SEED IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the varieties reported so far are all rich in 1-2 kinds of functional components, rice varieties rich in multiple functional components and highly resistant to rice blast are relatively rare, especially rich in resistant starch and vitamin A at the same time, and water-soluble protein There is no report of two-line CMS lines with low content of disease-resistant functional rice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 2) Planting hybrid F 1 generation, crossed F at flowering stage 1-AB / F 1-CD , have to resubmit F 1 , with F 1-ABCD express;

[0022] 3) Plant F 1-ABCD F 2-ABCD , planting F 2-ABCD , with a population of 2,800 plants, identify rice blast resistance at the seedling stage, select and mark plants with high blast resistance, harvest seeds from individual plants at the mature stage, measure resistant starch content, water-soluble protein content, and vitamin A content, and obtain by screening F which is high in resistant starch, vitamin A and low in water soluble protein 3-ABCD seed;

[0023] 4) 20 copies of strain F 3-ABCD , conduct identification of rice blast induced in the field, select excellent individual plants of strains with high resistance to rice blast and excellent agronomic and yield traits for harvesting, measure resistant starch content, water-soluble protein content, and vitamin A content, and screen to obtain resistance F with high starch content,...

Embodiment 2

[0032] 2) Planting hybrid F 1 generation, crossed F at flowering stage 1-AB / F 1-CD , have to resubmit F 1 , with F 1-ABCD express;

[0033] 3) Plant F 1-ABCD F 2-ABCD , planting F 2-ABCD , with a population of 3,000 plants, identifying rice blast resistance at the seedling stage, selecting and marking plants with high blast resistance, harvesting seeds from individual plants at the mature stage, measuring the content of resistant starch, water-soluble protein, and vitamin A, and screening to obtain F which is high in resistant starch, vitamin A and low in water soluble protein 3-ABCD seed;

[0034] 4) 20 copies of strain F 3-ABCD , conduct identification of rice blast induced in the field, select excellent individual plants of strains with high resistance to rice blast and excellent agronomic and yield traits for harvesting, measure resistant starch content, water-soluble protein content, and vitamin A content, and screen to obtain resistance F with high starch con...

Embodiment 3

[0043] 2) Planting hybrid F 1 generation, crossed F at flowering stage 1-AB / F 1-CD , have to resubmit F 1 , with F 1-ABCD express;

[0044] 3) Plant F 1-ABCD F 2-ABCD , planting F 2-ABCD , with a population of 3,000 plants, identifying rice blast resistance at the seedling stage, selecting and marking plants with high blast resistance, harvesting seeds from individual plants at the mature stage, measuring the content of resistant starch, water-soluble protein, and vitamin A, and screening to obtain F which is high in resistant starch, vitamin A and low in water soluble protein 3-ABCD seed;

[0045] 4) 20 copies of strain F 3-ABCD , conduct identification of rice blast induced in the field, select excellent individual plants of strains with high resistance to rice blast and excellent agronomic and yield traits for harvesting, measure resistant starch content, water-soluble protein content, and vitamin A content, and screen to obtain resistance F with high starch con...

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Abstract

The invention discloses a breeding method for a disease-resistant functional rice two-line sterile line, belonging to the technical field of special rice breeding. The method comprises the following steps: selecting a variety with high rice blast resistance, a rice variety with low water-soluble protein content, rice with high natural vitamin A content and rice with high resistant protein content; performing hybrid and multi-cross polymerization as well as backcross breeding of an excellent two-line sterile line to breed the disease-resistant functional rice two-line sterile line with high rice blast resistance, excellent agronomic trait and yield trait, high resistant starch content, high vitamin A content and low water-soluble protein content. Hybrid rice compounded by using the two-line sterile line is resistant to rice blast, has high resistant starch content, high vitamin A content and low water-soluble protein content, has the functions of reducing blood sugar and blood fat and losing weight, and is suitable for patients with kidney diseases and diabetes.

Description

technical field [0001] The invention specifically relates to a method for selecting a disease-resistant functional rice two-line sterile line, and belongs to the technical field of special rice breeding. Background technique [0002] In recent years, the nutritional and health functions of rice have attracted more and more attention from consumers. Some special rices are favored by consumers because of their unique health effects on the human body. The three-line hybrid functional nutrient rice selected by the Department of Agronomy of Huazhong Agricultural University, and the functional rice Jiangtangdao No. 1 produced by Green Giant Company have increased the content of resistant starch from 1% to 10%. Resistant starch is also known as functional dietary fiber, which has the functions of lowering blood sugar, blood fat and weight loss, and can enhance human intestinal health. Functional rice not only has high yield, but also has a price 30% higher. A good way to increase ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 陈志伟章清杞
Owner FUJIAN HEFENG SEED IND CO LTD
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