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Tomato chlorosis virus inhibitor as well as preparation method and application thereof

A tomato chlorotic virus and inhibitor technology, applied in the field of tomato chlorotic virus inhibitors and its preparation, can solve the problems of tomato chlorotic virus prevention and control difficulties, can not suppress the virus well, achieve good prevention and control effect, reduce Flying ability, increase the effect of photosynthesis

Active Publication Date: 2021-09-03
HUNAN PLANT PROTECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there are no tomato varieties resistant to tomato chlorosis virus at home and abroad, coupled with the influence of a series of complex factors such as the repeated occurrence of whitefly, resulting in great difficulties in the control of tomato chlorosis virus
[0004] Rhodopseudomonas palustris PSB-06 can improve the photosynthesis of plants and increase the disease resistance of plants. We found that it can reduce the occurrence of tomato chlorosis virus disease, but it can not inhibit the virus well when applied alone
[0005] Jinggangmycin is an antibiotic produced by actinomycetes. It has strong systemic properties and is easily absorbed by bacterial cells and conducts rapidly within it, interfering with and inhibiting the growth and development of bacterial cells. It is currently mainly used to control rice Sheath blight can also be used for rice false smut, corn spot disease, etc., but Jinggangmycin currently produced has not been used to prevent and control tomato virus diseases

Method used

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  • Tomato chlorosis virus inhibitor as well as preparation method and application thereof
  • Tomato chlorosis virus inhibitor as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A tomato chlorotic virus inhibitor, including 200mg / L Jinggangmycin and 3.3mg / L PSB06 bacterial agent.

[0021] A kind of application of the tomato chlorotic virus inhibitor of the present embodiment in suppressing tomato chlorotic virus, its application method is:

[0022] After the tomato is inoculated with tomato chlorosis virus in the room, it is transplanted to the field, and the tomato chlorosis virus inhibitor of embodiment 1 is applied in 10, 20, and 30 days after transplanting, and 15kg of tomato chlorosis virus inhibitor is applied in one mu of land. , to examine its control effect. The inspection results are listed in Table 1.

Embodiment 2

[0032] The prevention and control effects of different concentrations of Jinggangmycin (0, 50, 100, 200, 400, 600 mg / L) on tomato chlorosis virus were investigated, and the results of the investigation are listed in Table 2.

[0033] Table 2: Control effect of different concentrations of Jinggangmycin on tomato chlorosis virus

[0034] Concentration of Jinggangmycin (mg / L) ToCV incidence rate (%) 0 100 50 95.3 100 88.5 200 53.1 400 65.4 600 87.8

[0035] From the results in Table 2, it can be seen that with the increase of Jinggangmycin concentration, the control effect on tomato chlorotic virus first increased and then decreased. When the concentration of Jinggangmycin was 200-400 mg / L, the control effect was the best. If the concentration is too low, the flight of Bemisia tabaci cannot be reduced, and when the concentration is too high, it will damage the plants.

Embodiment 3

[0037] The prevention and control effects of different concentrations of PSB06 bacterial agents (0, 1.7, 3.3, 6.7, 16.7, 26.7 mg / L) on tomato chlorosis virus were investigated, and the results of the investigation are listed in Table 3.

[0038] Table 3: Control effect of different concentrations of PSB06 bacterial agent on tomato chlorosis virus

[0039] Concentration of PSB06 bacterial agent (g / L) ToCV incidence rate (%) 0 100 1.7 95.6 3.3 49.3 6.7 58.6 16.7 85.3 26.7 77.2

[0040] From the results in Table 3, it can be seen that with the increase of the concentration of PSB06 bacterial agent, the control effect on tomato chlorosis virus first increases and then decreases. When the concentration of PSB06 bacterial agent is 3.3-6.7 mg / L, the control effect is the best . When the concentration is too low, the promotion effect on plants is poor, and when the concentration is too high, it will cause too fast vegetative growth of pla...

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Abstract

The invention discloses a tomato chlorotic virus inhibitor as well as a preparation method and application thereof. The tomato chlorotic virus inhibitor comprises 200 to 400 mg / L of validamycin and 3.3 to 6.7 mg / L of PSB06 microbial agent. The preparation method of the tomato chlorosis virus inhibitor comprises the following steps: mixing the validamycin and the PSB06 microbial agent to prepare the tomato chlorosis virus inhibitor. According to the tomato chlorotic virus inhibitor disclosed by the invention, the action mechanism of the validamycin is that the trehalase activity of bemisia tabaci is inhibited, and the content of trehalose of the bemisia tabaci is reduced, so that the flying ability of the bemisia tabaci is reduced; the action mechanism of the PSB06 microbial agent is to increase the photosynthesis of plants, increase the chlorophyll content and increase the sugar content of the plants. According to the invention, the validamycin and the PSB06 microbial agent are mixed to achieve a synergistic effect on prevention and control of the tomato chlorosis virus.

Description

technical field [0001] The invention belongs to the field of agricultural products, and relates to a tomato chlorotic virus inhibitor and its preparation method and application. Background technique [0002] Tomato chlorotic virus disease (ToCV) is a disease caused by tomato chlorotic virus infecting plants. Its symptoms appear later, similar to the symptoms of nutrient deficiency, with a long incubation period and strong hazards. Once the plants get sick, especially before the flowering period, it will lead to a substantial decline in fruit yield and commodity value, and even cause farmers to lose their harvest. [0003] The virus disease is transmitted in a semi-persistent way by vector insects such as whitefly, so it is closely related to the occurrence of whitefly. When the number of whitefly is large, the occurrence of viral disease is more serious. So far, there is no tomato variety resistant to tomato chlorosis virus at home and abroad, coupled with the influence of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/16A01N63/27A01P1/00A01P3/00A01P21/00
CPCA01N43/16A01N63/27Y02A40/10
Inventor 史晓斌刘勇张德咏张战泓张卓谭新球杜娇穆扬王天旗
Owner HUNAN PLANT PROTECTION INST
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