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A kind of Bacillus Velez for preventing and treating rice blast and its screening method

A technology for bacillus and rice blast, which is applied in the field of Bacillus velesi for preventing and treating rice blast and its screening field, can solve the problem that the veleis strain cannot be comprehensively controlled and the like, and achieves the effect of good control effect.

Active Publication Date: 2021-02-23
SHENYANG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual application process, rice blast is not a single disease species, often accompanied by sheath blight and rice false smut, and the Veles strains that have been reported so far cannot be comprehensively controlled. Biocontrol strains with comprehensive control effects on rice blast, rice false smut and sheath blight are particularly important

Method used

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  • A kind of Bacillus Velez for preventing and treating rice blast and its screening method
  • A kind of Bacillus Velez for preventing and treating rice blast and its screening method
  • A kind of Bacillus Velez for preventing and treating rice blast and its screening method

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Embodiment 1

[0033] A Bacillus velezensis PJWN-1 for controlling rice blast, the preservation number is: CGMCC No.17237. The preservation date is: January 25, 2019. The depository unit is: General Microbiology Center of China Committee for the Collection of Microbial Cultures. The preservation address is: Institute of Microbiology, Chinese Academy of Sciences, No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing.

[0034] The screening method of the Veles bacillus of this control rice blast comprises the following steps:

[0035] Soil samples were taken from paddy fields in the main rice producing areas of various places, and the microbial strains existing in the soil were isolated from the soil samples, and the three-point confrontation culture method was used to conduct confrontation experiments with the blast fungus strains;

[0036] (1) Pour the culture medium suitable for the growth of pathogenic bacteria on the petri dish;

[0037] (2) put a blast fungus bacterium cake wit...

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Abstract

The invention relates to the technical field of rice blast prevention and control, in particular to a Bacillus velezensis PJWN‑1 strain with a preservation number of CGMCC No. 17237; and the application of the strain to rice blast. Bacillus velezensis of the present invention has better control effect to rice blast, and by three-point confrontation culture test, the results show that Bacillus velezensis (Bacillus velezensis) PJWN-1 has a bacteriostatic zone of 30.67 to rice blast. mm.

Description

technical field [0001] The invention relates to the technical field of rice blast prevention and control, in particular to a Bacillus Velez for preventing and treatment of rice blast and a screening method thereof. Background technique [0002] Rice blast (Pyricularia oryzae) is an important disease that is sudden and easy to spread, and it occurs in the countries that mainly produce rice in the world. Rice blast is also the most serious rice disease in my country's north and south rice regions, causing 10% to 20% of rice output loss every year, and the output loss in severely damaged areas reaches 40% to 50%. At present, people use blast-resistant varieties and chemical control as the main control measures. Because the resistance of blast-resistant varieties will gradually weaken or even lose, the residues of chemical agents will destroy the ecological environment and the health of humans and animals. The impact is very bad, so the biological control of rice blast is parti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12N1/02A01N63/22A01P3/00C12R1/07
CPCA01N63/00C12N1/02C12N1/20C12N1/205C12R2001/07
Inventor 魏松红李晶
Owner SHENYANG AGRI UNIV