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Plant stress-resistant inducer and application thereof

A technology of plant stress resistance and inducer, which is applied in the direction of plant growth regulator, plant growth regulator, application, etc., can solve the problems of poor water solubility and limited application, and achieve the effect of low cost, simple use method and rich raw materials

Inactive Publication Date: 2009-09-30
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor water solubility of chitin and chitosan limits their application in agricultural production

Method used

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  • Plant stress-resistant inducer and application thereof
  • Plant stress-resistant inducer and application thereof
  • Plant stress-resistant inducer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Rapeseed seedlings were planted in pots of the same size and with the same soil quality, and were divided into 36 groups after being poured with sufficient water.

[0039] Group 1 is without any stress dH 2 O-treated control 1;

[0040] 8 groups of foliar spray chitosan oligosaccharides (the degree of deacetylation of chitosan oligosaccharides > 90%, the degree of polymerization 2-10, the spraying amount of 30 kg per mu) were sprayed continuously for 3 days at a concentration of 0 (contrast 2) to 75 mg / L, respectively. Spray once a day, and cut off the water for the above materials. Treatment temperature: 16-27°C, relative humidity: 30%-80%, it was found that spraying 50mg / L-75mg / L on the leaves once a day or spraying once a day for 3 consecutive days improved the drought resistance of the crops;

[0041] 8 groups of root-filling chitosan oligosaccharides (the degree of deacetylation of chitosan oligosaccharides>90%, the degree of polymerization of 2-10, and the conce...

Embodiment 2

[0072] Example 2 Effect of Chitooligosaccharides on the Activity of Rapeseed Resistance Enzyme under Low Temperature Stress

[0073] Such as Image 6 , 50mg / L and 75mg / L chitosan oligosaccharide treatment under low temperature stress 1 and 3 times the SOD activity of rapeseed significantly increased on the 3d, 6d and 9th day (P<0.05).

[0074] Effects of chitooligosaccharides on the proline content of rapeseed under low temperature stress: such as Figure 7 , 50mg / L and 75mg / L chitosan oligosaccharide treatment under low temperature stress 1st and 3rd times the proline content of rapeseed significantly increased on the 6th day (P<0.05).

Embodiment 3

[0075] Example 3 Effects of Oligochitosan on Rapeseed Resistance Enzyme Activity under Flooding Stress

[0076] Such as Figure 8 , 50mg / L and 75mg / L chitosan oligosaccharide treatment under low temperature stress 1 and 3 times SOD activity of rapeseed was significantly increased on the 3d, 6d and 9d (P<0.05).

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Abstract

The invention relates to a plant stress-resistant inducer, which takes Chitosan oligosaccharide solution as an effective active component. The invention adopts Chitosan oligosaccharide to induce crops to resist drought, waterlog, cold and freeze. Leaves of the crops are sprayed with the Chitosan oligosaccharide or roots of the crops are irrigated with the Chitosan oligosaccharide in order to induce the stress resistance (drought, waterlog, cold and freeze resistance) of the crops. By inducing the leaves of the crops, the content of resistant enzyme is increased in different degrees; the praline content is obviously increased; the opening degree of stomata obviously declines; the chlorophyll content is obviously increased; and the stress resistance of the crops is improved. The external application of the Chitosan oligosaccharide can improve the stress resistance of the crops, is free from toxicity, causes no environmental pollution, and is simple in usage.

Description

technical field [0001] The invention relates to a plant stress resistance inducing agent, in particular to using chitosan oligosaccharide to induce plant drought resistance, waterlogging resistance, freezing resistance and cold resistance. Background technique [0002] Anti-stress agent refers to the general term for chemical substances applied to soil or crops that can enhance the stress resistance of the crop itself. In recent years, the following types have been researched and applied more in production. [0003] Anti-drought agent: 1. FA Handilong: It is a multifunctional plant anti-drought growth nutrient and plant anti-transpiration agent refined with fulvic acid as the main raw material. 2.6-BA and exogenous abscisic acid (ABA): 6-BA prevents the photosynthetic rate, chlorophyll content and leaf water potential of crops from decreasing under water stress by regulating endogenous hormone levels, and increases RuBP carboxylase and superoxide dismutase and catalase acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/00A01P21/00
Inventor 杜昱光李艳赵小明白雪芳
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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