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Breeding method of high-quality and high-yielding two-line hybrid indica rice combination with blast resistance

A technology of rice blast resistance and hybrid combination, which is applied in the field of crop genetics and breeding, can solve problems such as narrowness and hidden dangers of rice production safety, and achieve the effects of shortening breeding time, protecting intellectual property rights of varieties, and avoiding bad chain burdens

Active Publication Date: 2022-05-20
JIANGSU LIXIAHE REGION AGRI RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the past 40 years, due to the narrow genetic basis of the parents and the diversity of highly pathogenic Magnaporthe grisea, rice blast has become a major problem in hybrid rice production. The continuous outbreak has brought huge hidden dangers to the safety of rice production in my country

Method used

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  • Breeding method of high-quality and high-yielding two-line hybrid indica rice combination with blast resistance
  • Breeding method of high-quality and high-yielding two-line hybrid indica rice combination with blast resistance

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Experimental program
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Effect test

Embodiment 1

[0027] 1. Breeding materials:

[0028] 1) Longke 638S was used as the female parent. Longke 638S is a two-line male sterile line bred by Hunan Yahua Seed Industry Science Research Institute. This variety has been applied for and authorized by the Plant Variety Protection Office of the Ministry of Agriculture. The variety right number: CNA20090950.7 can be purchased from Hunan Yahua Seed Industry Science Research Institute. This variety is a two-line sterile line that has been widely used in my country in recent years. The hybrid rice prepared has the advantages of high yield, high quality and wide adaptability.

[0029] 2) Kangyangdao No. 6 (Yangdao No. 6 × Gumei No. 4, BC 3 f 5 ) as the male parent. Among them, Yangdao No. 6 was bred by the Agricultural Science Research Institute of Lixiahe District, Jiangsu Province. This variety has been applied for and authorized by the Plant New Variety Protection Office of the Ministry of Agriculture. The variety right number: CAN20...

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Abstract

The invention relates to a method for breeding a high-quality and high-yield two-line hybrid indica rice combination resistant to rice blast, and belongs to the technical field of crop genetics and breeding. The method involves the introduction of the broad-spectrum and long-lasting rice blast resistance gene Pigm into the two-line male sterile line through molecular marker-assisted selection (MAS), combined with the selection of main agronomic traits, to breed a new rice blast-resistant two-line male sterile line , and use the bred blast-resistant two-line sterile line to combine with a strong dominant and high-quality restorer line to breed a high-quality, high-yielding two-line hybrid indica rice combination that is resistant to blast demand for rice production.

Description

technical field [0001] The invention provides a method for selecting a high-quality and high-yield two-line hybrid indica rice combination resistant to rice blast, and belongs to the technical field of crop genetics and breeding. Background technique [0002] Rice is one of the main food crops in my country and even in the world. High yield, high quality and disease resistance are important breeding goals of rice. As an effective way to improve rice yield and quality, two-line hybrid rice has been widely used and promoted, and has made a great contribution to food safety production. Applications. Therefore, there is an urgent need to improve the blast resistance of two-line hybrid rice to meet the needs of rice production. Rice blast caused by Magnaporthe oryzae is one of the most important fungal diseases threatening the safety of rice production in the world. Rice blast caused by rice blast reduces rice production by 10%-30% every year in the world. In the past 40 years...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 李育红李爱宏肖宁吴云雨戴正元刘广青潘存红周长海余玲黄年生张小祥季红娟王闯王志平吴诗清李响
Owner JIANGSU LIXIAHE REGION AGRI RES INST
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