A kind of rice breeding method

Abstract

The invention provides a rice breeding method. Synchronous induced identification of rice blast and rice black-streaked dwarf virus is realized. The rice breeding method comprises the following steps: inducing the rice blast by using MingShui scented rice; attracting laodelphax striatellus to suck and propagate the rice black-streaked dwarf virus by using fragrant blood glutinous rice 2315; selecting and breeding group seeds and performing mixed-breeding and mixed-planting with the MingShui scented rice; after bacteria inoculation and virus inoculation are induced, performing field selection and indoor identification, and finally, selecting a single spike which meets a breeding target and performing generation-adding to form a high-quality high-yield rice blast-resistant and rice black-streaked dwarf virus-resistant new variety. According to the method, the breeding of the high-quality high-yield rice blast-resistant and rice black-streaked dwarf virus-resistant new variety can be accelerated, the disadvantages that the rice appearance quality of a variety which is popularized in current production is relatively poor, and the resistance to the rice blast and the resistance to the rice black-streaked dwarf virus are weak are overcome, so that the quality and the commodity characteristic of rice are improved, the using amount of a pesticide can also be reduced, environment pollution is reduced, the economic benefit is improved, and meanwhile, the requirements on green sustainable development industries which are espoused at present are met.

Description

technical field [0001] The invention relates to a rice breeding method, in particular to a method for breeding new rice strains (species) with high quality, high yield and resistance to rice blast and black-streaked dwarf disease, belonging to the technical field of crop genetics and breeding. Background technique [0002] In recent years, rice blast and rice black-streaked dwarf disease have been increasing year by year in the Huanghuai japonica rice region, causing extremely serious impact on yield. Rice blast is one of the most destructive rice diseases caused by the fungus Magnaporthegrisea (Hebert) Barr, especially the mid-to-late panicle neck blast (commonly known as "choke neck blast") can cause large-scale production reduction, or even crop failure, as Ming Shuixiangdao, Xinfeng No. 2, Yujing No. 6, etc. are all heavily susceptible varieties. Rice black streaked dwarf virus (RBSDV) is a vicious rice virus disease that is persistently transmitted non-ovially by the b...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rice breeding method aimed at the deficiencies of the prior art, which can accelerate the cultivation of high-quality, high-yield and resistant rice blast and black-streaked dwarf rice varieties, and make up for the poor appearance quality of popular varieties in current production. The shortcomings of weak resistance to rice blast and rice black-streaked dwarf disease can improve the quality and commerciality of rice, reduce the use of pesticides, and reduce environmental pollution. While improving economic benefits, it is also in line with the current advocacy Green sustainable development industry requirements

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