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Breeding Method of Indica Rice Restorer Lines with Strong Blast Resistance

A technology of rice blast resistance and rice blast resistance gene, applied in the field of crop genetics and breeding, can solve problems such as hidden dangers and narrowness of rice production safety

Active Publication Date: 2022-05-17
JIANGSU LIXIAHE REGION AGRI RES INST
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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 Indica Rice Restorer Lines with Strong Blast Resistance

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Embodiment 1

[0034] 1. Breeding materials

[0035] 1) Huazhan (parent 1) was used as the female parent. Huazhan is an indica restorer line developed by the China Rice Research Institute. This variety has been applied to and authorized by the Plant Variety Protection Office of the Ministry of Agriculture. The variety right number: CNA 20080059.0 can be purchased from the China Rice Research Institute. This variety is the backbone restorer line of hybrid rice in my country. The hybrid rice prepared has the advantages of high yield, high quality, resistance to rice blast and wide adaptability.

[0036] 2) Fuhui 838 (parent 2) was used as the male parent. Fuhui 838 is an indica conventional rice variety cultivated by Sichuan Institute of Atomic Energy. Although this variety has not applied for new variety rights to the Plant Variety Protection Office of the Ministry of Agriculture, it has been widely used as an indica rice restorer line since it was approved as an indica-type conventional r...

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Abstract

The invention relates to a method for selecting and breeding an indica rice restorer line with strong blast resistance and belongs to the technical field of crop genetics and breeding. The method involves using an indica restorer line parent (Huazhan) that is resistant to blast disease, has excellent comprehensive agronomic traits, strong advantages, and good combining ability as the donor parent of the rice blast resistance gene, and has no resistance to rice blast, excellent comprehensive agronomic traits, and superiority. Parent 2 (Fuhui 838), an indica restorer line with strong and good combining ability, was used as the recipient parent, crossed, and then parent 1 (Huazhan) was used as the recurrent parent for backcrossing once. Molecular markers were used to detect the Rice blast resistance genes such as Pi2, Pi54, Pid3, Pita and Pib, combined with agronomic trait selection and rice blast resistance identification results, bred a new restorer line with strong blast resistance, and then matched with different sterile lines, selected Breed high-quality and high-yield hybrid indica rice combinations that are resistant to rice blast, improve the rice blast resistance of the first generation of hybrids, and make them meet the needs of current rice production.

Description

technical field [0001] The invention provides a method for selecting and breeding an indica rice restorer line with strong blast resistance 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 one of the main ways to increase rice yield, hybrid rice has been widely used and promoted, and has made a great contribution to food safety production. However, recently, the application of hybrid rice in production has been limited due to the non-resistance or degradation of resistance to rice blast. Therefore, there is an urgent need to improve the blast resistance of hybrid rice to meet the needs of rice production. Rice blast caused by Magnaportheoryzae is one of the most important fungal diseases that threaten the safety of rice production in the world. Rice blast caused by rice...

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 李育红李爱宏吴云雨肖宁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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