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Application of sargentgloryvine stem polysaccharide-containing plant resistance inducer in prevention of plant diseases

A plant induction and plant disease technology, applied in the field of pesticides, can solve undiscovered problems, reduce environmental pollution, benefit sustainable agricultural development, and reduce the use of pesticides

Active Publication Date: 2020-10-16
贵州量子数力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the use of S. sagittarius polysaccharide as an inducer for the control of agricultural diseases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: The test of preventing wheat powdery mildew by Sacredvine polysaccharides

[0025] The Caulis sagelicula polysaccharide prepared in the above-mentioned preparation examples was formulated into a 0.1 mg / mL aqueous solution of the sagecabula polysaccharide, and then the aqueous solution of the sagecabula polysaccharide was sprayed on the potted wheat leaves of 2 leaves and 1 heart stage with consistent growth, every Spray once every 2 days, spraying 3 times in total, and repeat 3 times for each treatment. The control group was treated with the same concentration of amino-oligosaccharides, and the blank group was replaced with water. Two days after the last spraying, the powdery mildew conidia were inoculated by the spore shake-off method, and the amount of spores was controlled at about 25 spores per field of view under a 10×10 magnification electron microscope. After 7-10 days, after the incidence of blank control wheat plants stabilized, the incidence of whea...

Embodiment 2

[0029] Embodiment 2: The test of the prevention of strawberry botrytis by the polysaccharide of Rhododendron sagitta

[0030] The above-mentioned preparation examples prepared the Caulis sanctum polysaccharides prepared into a 0.1 mg / mL aqueous solution of the Caulis sanctum polysaccharides, and then the aqueous solution of the Caulis sanctum polysaccharides was sprayed on uniformly growing strawberry plants, and each treatment was repeated 3 times. The control group was amino oligosaccharides of the same concentration, and the blank group was replaced with water. After 24 hours, spray and inoculate the strawberry seedlings with a suspension of Botrytis cinerea spores, and the spore concentration is 20-30 spores per field of view under the microscope. After 7-10 days, after the incidence of blank control strawberry plants stabilized, the incidence of strawberry gray mold was counted and the control effect was calculated.

[0031] See Table 2 for the results of the resistance ...

Embodiment 3

[0034] Example 3: Test of Preventing Potato Late Blight by Polysaccharides of S.

[0035] The above-mentioned preparation examples prepared the Rhizoctonia polysaccharides prepared into 0.1mg / mL of Rhizoctonia polysaccharides aqueous solution, then sprayed the Rhizoctonia polysaccharides aqueous solution on the potato leaves with a plant height of about 15cm, each treatment was repeated 3 times, and the control The same concentration of amino oligosaccharides was used in the group, and the blank group was replaced with water. After 24 hours, the germinated potato late blight spore suspension (1.3×10 4 per mL) on the leaves, and after 7-10 days, the incidence of potato late blight was counted and the control effect was calculated after the incidence of blank control potato plants stabilized.

[0036] See Table 3 for the anti-potato late blight resistance results of S. It can be seen from Table 3 that the polysaccharides of Rhizoma sagitta has a good preventive effect on potat...

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PUM

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Abstract

The invention relates to application of a sargentgloryvine stem polysaccharide-containing plant resistance inducer in prevention of plant diseases. The application is characterized in that the sargentodoxa stem polysaccharide-containing plant resistance inducer is used for inhibiting the following crop pathogenic bacteria: Blumeria graminis, Botrytis cinerea, Phytophthora infestans, Pyricularia grisea or Pseudomonas solanacearum. The sargentgloryvine stem polysaccharide-containing plant resistance inducer is prepared by sequentially adding petroleum ether and ethanol for extraction, suction filtration and other steps. The sargentgloryvine stem polysaccharide can induce plants to generate resistance, has a broad-spectrum prevention effect on various crop pathogenic bacteria, can reduce theuse of a large amount of chemical bactericides, and can reduce the problem of environmental pollution caused by the use of chemical pesticides.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and relates to a plant polysaccharide used for preventing plant diseases, and more particularly relates to a plant polysaccharide used for preventing plant diseases. . [0002] technical background [0003] For a long time, the prevention and control of plant diseases has mainly been based on chemical agents, but the long-term use of chemical pesticides in large quantities has caused a great impact on the environment and human health. Therefore, more and more people pay more and more attention to the methods of disease prevention and control that are safer and more environmentally compatible. Among them, plant inducers have attracted people's attention because of their high efficiency and low toxicity. Plant inducers can induce plants to produce defense responses after use, and then make plants develop stress resistance. [0004] Polysaccharides are a class of substances with various activit...

Claims

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Application Information

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IPC IPC(8): A01N43/16A01P1/00A01P3/00C08B37/00
CPCA01N43/16C08B37/0003
Inventor 陈华保杨春平张敏张一博魏海林李晓燕李伟
Owner 贵州量子数力科技有限公司
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