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Application of Macromolecular Quaternary Ammonium Salt in Inhibiting Sclerotia Germination of Rice Sheath Blight

A technology of rice sheath blight and quaternary ammonium salts, applied in the field of inhibiting rice sheath blight sclerotia germination, can solve the problems that rice sheath blight cannot be prevented and completely eradicated, and achieve easier biodegradation, quaternary ammonium The effect of increased salt concentration and strong penetration

Active Publication Date: 2018-12-07
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unable to control sclerotia, which is one of the reasons why it is difficult to completely eradicate rice sheath blight

Method used

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  • Application of Macromolecular Quaternary Ammonium Salt in Inhibiting Sclerotia Germination of Rice Sheath Blight
  • Application of Macromolecular Quaternary Ammonium Salt in Inhibiting Sclerotia Germination of Rice Sheath Blight
  • Application of Macromolecular Quaternary Ammonium Salt in Inhibiting Sclerotia Germination of Rice Sheath Blight

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Graft benzyl ammonium chloride (PDMS-g-BC, such as figure 1 Shown in A) the method that aqueous solution suppresses rice sheath blight bacteria sclerotia germination, comprises the steps:

[0029] (1) Preparation of macromolecular quaternary ammonium salt solution: Weigh a certain amount of polysiloxane grafted benzyl ammonium chloride (PDMS-g-BC, number average molecular weight is 2.4×10 3 , the grafting rate of quaternary ammonium salt is 1 / 5, and its specific preparation method refers to the literature "LinYaling, Liu Qiongqiong, Cheng Liujun, Lei Yufeng, Zhang Anqiang. Synthesis and antimicrobial activities of polysiloxane-containing quaternary ammonium saltson bacteria and phytopathogenic fungi. Reactive & Functional Polymers ,2014,85:36-44.” or “Liu Qiongqiong. Synthesis and Characterization of High Molecular Quaternary Ammonium Salts and Their Inhibitory Properties to Bacteria and Fungi; Master Thesis of South China University of Technology, 2014”; Tetrasiloxane...

Embodiment 2

[0035] n-Butylammonium bromide (PDMS-g-BB, such asfigure 1 Shown in B) the method that aqueous solution suppresses rice sheath blight bacteria sclerotia germination is basically the same as embodiment 1, and difference is only: the macromolecular quaternary ammonium salt in the step (1) is polysiloxane graft n-butyl bromide Ammonium chloride (PDMS-g-BB, number average molecular weight is 3.0×10 3 , the grafting rate of quaternary ammonium salt is 1 / 6, and the specific preparation method refers to the literature "Lin Yaling, Liu Qiongqiong, Cheng Liujun, Lei Yufeng, ZhangAnqiang. Synthesis and antimicrobial activities of polysiloxane-containingquaternary ammonium salts on bacteria and phytopathogenic fungi. Reactive & Functional Polymers ,2014,85:36-44.” or “Liu Qiongqiong. Synthesis and Characterization of High Molecular Quaternary Ammonium Salts and Their Inhibitory Properties to Bacteria and Fungi; Master Thesis of South China University of Technology, 2014”; Tetrasiloxane (...

Embodiment 3

[0037] Graft n-hexylammonium bromide (PDMS-g-HEB, such as figure 1 Shown in C) the method that aqueous solution suppresses rice sheath blight bacterium sclerotium germination is basically the same as embodiment 1, and difference is only: the macromolecular quaternary ammonium salt in the step (1) is polysiloxane graft n-hexyl bromide Ammonium (PDMS-g-HEB, number average molecular weight 2.5×10 3 , the grafting rate of quaternary ammonium salt is 1 / 4, and the specific preparation method refers to the literature "Lin Yaling, Liu Qiongqiong, Cheng Liujun, Lei Yufeng, ZhangAnqiang. Synthesis and antimicrobial activities of polysiloxane-containingquaternary ammonium salts on bacteria and phytopathogenic fungi. Reactive & Functional Polymers ,2014,85:36-44.” or “Liu Qiongqiong. Synthesis and Characterization of High Molecular Quaternary Ammonium Salts and Their Inhibitory Properties to Bacteria and Fungi; Master Thesis of South China University of Technology, 2014”; Tetrasiloxane (...

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Abstract

The invention discloses an application of macromolecular quaternary ammonium salt in inhibiting rhizoctonia solani sclerotial germination. The structural formula of the macromolecular quaternary ammonium salt is represented by a formula (I). The main chain of the macromolecular quaternary ammonium salt is hydrophobic PDMS, and the side group of the macromolecular quaternary ammonium salt is QAS. Because the main chain and the side group have relatively high difference in hydrophilicity and hydrophobicity, the macromolecular quaternary ammonium salt can be stably adsorbed on the hydrophobic sclerotium outer surface in a water-based system, such that the quaternary ammonium salt concentration on sclerotium surfaces is greatly increased. Therefore, primary hypha germinated from sclerotial germination hole can be effectively killed, and sclerotial germination can be inhibited. The macromolecular quaternary ammonium salt can be easily dissolved in water, and can be prepared into water solutions with different concentrations with no auxiliary agent such as an emulsifier. Therefore, the macromolecular quaternary ammonium salt is convenient to use.

Description

technical field [0001] The invention relates to the use of macromolecular quaternary ammonium salt, in particular to the use of macromolecular quaternary ammonium salt in inhibiting the germination of rice sheath blight bacteria sclerotia. Background technique [0002] Rice sheath blight, commonly known as foot rot and flower stalk disease, is a worldwide fungal disease that commonly occurs in rice production. It is caused by Rhizoctonia solani and is one of the three major diseases of rice. With the promotion and management of high-yield measures such as multiple tillers, dwarf varieties, dense planting, and increased nitrogen fertilizers, and changes in management, its damage has become more and more serious, and it has now become the first of the three major rice diseases in southern my country. [0003] Because rice sheath blight has a wide range of hosts and strong saprophytic properties, the disease begins at the base, and the disease conditions are closely related to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N55/10A01P3/00
CPCA01N55/00
Inventor 林雅铃刘杨润琦周盛文刘琼琼雷雨风张安强
Owner SOUTH CHINA AGRI UNIV
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