Use of resistance inducer in prevention and treatment on potato scab

A technology of potato scab and inducer, applied in application, pest control, biocide, etc., to achieve the effect of reducing the disease rate and disease index

Inactive Publication Date: 2016-02-03
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the potato plant itself, the application of chlormequat to the research of resistance induction and prevention and treatment of scab has not been reported before this application is filed.

Method used

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  • Use of resistance inducer in prevention and treatment on potato scab
  • Use of resistance inducer in prevention and treatment on potato scab
  • Use of resistance inducer in prevention and treatment on potato scab

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The effect of exogenous chlormequat on the susceptibility index of seed potato scab and plant growth in greenhouse potato seed production was studied using susceptible Chapotty potato varieties as materials. By analyzing the changes of various physiological indicators such as POD activity, PAL activity, and chlorophyll content of plant leaves, the physiological basis of induced resistance was explored.

[0023] During the production cycle with the highest temperature and the most severe outbreak of scab from May to August, 20-50ppm of chlormequat is applied externally, and the application rate is 10 grams / mu; the time of external application of chlormequat is after the potatoes are planted Day 10-20.

[0024] 14 days after the external application of chlormequat, the second leaf of the plant was taken for the following measurements:

[0025] Determination of morphological changes in potato plants:

[0026] The measurement results showed that after external application...

Embodiment 2

[0036] It is carried out during the production cycle when the temperature is the highest and the scab outbreak is the most severe from May to August. The external application of chlormequat is 80-130ppm, and the application rate is 8 grams / mu; the time of external application of chlormequat is after the potatoes are planted Day 20-30.

[0037] 14 days after the external application of chlormequat, the second leaf of the plant was taken for the following measurements:

[0038] Determination of morphological changes in potato plants:

[0039] The measurement results showed that after external application of 80-130ppm CCC, the plants were obviously dwarfed and thick, and the leaf color also changed obviously. Plant dwarfing is prominently manifested in the shortening of stem nodes. After 80-130ppm CCC foliar spraying, the plant height of potato plants decreased by 22.0% compared with the control, and the difference reached a significant level. See figure 1 Effects of chlormeq...

Embodiment 3

[0049] It is carried out during the production cycle when the temperature is the highest and the scab outbreak is the most severe from May to August. The external application of chlormequat is 150-200ppm, and the application rate is 5 grams / mu; the time for external application of chlormequat is after the potatoes are planted. Day 35-40.

[0050] 14 days after the external application of chlormequat, the second leaf of the plant was taken for the following measurements:

[0051] Determination of morphological changes in potato plants:

[0052] The measurement results showed that after external application of 150-200ppm CCC, the plants were obviously dwarfed and thick, and the leaf color also changed obviously. Plant dwarfing is prominently manifested in the shortening of stem nodes. After 150-200CCC foliar spraying, the plant height of potato plants decreased by 15.0% compared with the control, and the difference reached a significant level. See figure 1 Effects of chlorme...

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Abstract

The invention discloses a use of a resistance inducer in prevention and treatment on potato scab. Through a susceptible variety Shepody as a material, the influence produced by exogenous cycocel on a potato scab decease infection index and plant growth in greenhouse potato seed production. Through analysis of change of a plurality of physiological indexes such as plant leaf peroxidase and chlorophyll content, PAL activity and superoxide anion free radical content, induced resistance physiological basis is explored. A result shows that exogenous cycocel can substantially reduce a potato seed infective rate, stunt a plant, inhibit overground portion growth and improve leaf chlorophyll and carotenoid synthesis. Through induced improvement of antioxidase system activity, superoxide radical and MDA content of a leaf is effectively reduced and plant systemic resistance to scab is improved.

Description

technical field [0001] The invention relates to the field of agricultural production, in particular to the application of an inducer in preventing and treating potato scab. Background technique [0002] Potato scab is a worldwide disease caused by a variety of pathogenic bacteria of the genus Streptonyces. The disease is especially serious in areas with heavy continuous cropping and in greenhouse seed potato production, causing a large number of scabs on the surface of potato pieces, seriously affecting quality and commodity value, and causing huge economic losses. At present, it is mainly aimed at pathogenic bacteria, using chemical methods combined with cultivation measures to prevent and control potato scab, such as killing with chemical agents such as Kede and Biquimide, changing the ratio and ion concentration of the culture substrate, and using antagonistic streptomyces for prevention and control. [0003] The physiological function of chlormequat (CCC) is to control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N33/12A01P1/00A01P21/00
Inventor 陈小兰汤晓莉薛红芬王燕云杨晨璇尹进超张根松邓清
Owner YUNNAN UNIV
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