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Application of a bisabolane-type sesquiterpenoid in the control of powdery mildew

A powdery mildew and compound technology is applied in the field of botanical pesticides in the technical field of agricultural fungicides to achieve the effects of reducing the degree of disease damage, avoiding side effects and reducing economic losses

Active Publication Date: 2022-04-19
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various compounds contained in the above turmeric have not been used in the prevention and treatment of powdery mildew in the agricultural field

Method used

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  • Application of a bisabolane-type sesquiterpenoid in the control of powdery mildew
  • Application of a bisabolane-type sesquiterpenoid in the control of powdery mildew
  • Application of a bisabolane-type sesquiterpenoid in the control of powdery mildew

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Application of bisabolane-type sesquiterpenoids extracted from turmeric to the control of cucumber powdery mildew

Embodiment 11

[0091] Select the compound (turmeronol A) of bisabolane type sesquiterpene No. 1, that is, compound No. 1. Dissolve 100mg of compound No. 1 in 1ml DMSO to prepare 100mg ml -1 solution, and then according to the required solution concentration ratio (DMSO content in the prepared solution is very small), it is prepared into 10, 20, 40, 80μg ml -1 Concentration for use. The test crops were cucumbers at the stage of 3 true leaves, and the concentration was 1×10 5 spores / mL of powdery mildew was sprayed on the surface of cucumber leaves for inoculation. After 24 hours, the prepared No. 1 compound of various concentrations was evenly sprayed on the leaves until they were all wet. Three pots per treatment were repeated four times. Cultivate for 8 days at a temperature of 22°C and a humidity of 75%. When the diseased leaf rate of the blank control reaches more than 80%, the incidence of each treatment is investigated step by step, and then the data is analyzed statistically. The res...

Embodiment 12

[0093] With the compound (turmeronol B) of No. 2, namely No. 2 compound, replace No. 1 compound, all the other are the same as embodiment 1.1, the result shows that No. 2 compound prevents and cures the LC obtained by indoor bioassay of cucumber powdery mildew. 50 34.81 μg ml -1 .

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Abstract

The invention discloses the application of a birrha alkane-type sesquiterpene compound in the prevention and treatment of powdery mildew. Further, the bisabolane-type sesquiterpenes include curcumonol A, curcumonol B, 8-hydroxy-aromatic curcumone, α-curcumene, (+)-(S)-aromatic curcumone One or more of them can be separated and extracted from turmeric plants, which is conducive to the development of new botanical pesticides, effectively preventing and controlling powdery mildew, reducing the degree of disease damage, and reducing economic losses in agricultural production, and has low toxicity and low toxicity. Pollution and targets are not easy to produce drug resistance, avoiding a series of side effects of chemical pesticides.

Description

technical field [0001] The invention relates to a botanical pesticide in the technical field of agricultural fungicides, in particular to the application of a bisabolane-type sesquiterpene compound in the prevention and treatment of powdery mildew. Background technique [0002] Cucumber is a year-round herbaceous plant belonging to Cucurbitaceae Cucurbitaceae, which has a cultivation history of more than 2,000 years in my country. Cucumber is rich in vitamin A, vitamin C and a variety of beneficial minerals. It is one of the main vegetables in our country. In recent years, with the adjustment of my country's agricultural industry structure and the rapid development of economy, the cultivation area of ​​cucumber in my country has expanded rapidly, the varieties have become more abundant, and the division of cultivation crops has become more detailed. [0003] Cucumber powdery mildew is caused by Sphaerotheca fuliginea, which can infect cucumbers throughout their growth perio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C49/213C07C49/647A01N35/02A01N35/06A01N31/06A01N27/00A01N43/90A01N31/08A01P3/00
CPCA01N27/00A01N31/06A01N31/08A01N35/02A01N35/06A01N43/90
Inventor 代光辉傅伟杰刘佳张敏
Owner SHANGHAI JIAOTONG UNIV
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