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Method for reducing plant virus content in bemisia tabaci by utilizing insecticide fungi

A plant virus, Bemisia tabaci technology, applied in the directions of botanical equipment and methods, chemicals for biological control, plant growth regulators, etc., can solve problems such as impact, reduce environmental pollution, and improve the level of pollution-free control , the effect of reducing the amount of plant virus

Inactive Publication Date: 2017-09-29
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After the insecticidal fungus infects the vector insect carrying the plant virus, will it affect the plant virus in the insect body? There are no research reports at home and abroad

Method used

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  • Method for reducing plant virus content in bemisia tabaci by utilizing insecticide fungi

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Embodiment Construction

[0011] The embodiment of the present invention adopts the method of indoor measurement.

[0012] The determination method is as follows:

[0013] 1. Bemisia tabaci and insecticidal fungus I. javanica

[0014] Toxin-carrying older nymphs: Select the leaves with a high density of older nymphs of Bemisia tabaci and relatively neat leaf growth on tomato plants with obvious tomato yellow leaf curl disease, and use them for insecticidal fungus treatment.

[0015] Virus-infected newly emerged adults: Collect older nymphs of Bemisia tabaci with a relatively consistent density and growth (about 10 days old, preferably 4 days before eclosion) and leaves with obvious yellow leaf curl disease of tomato, and put them in a disposable In the cup, the emergence of Bemisia tabaci was observed every day, and the adults that emerged on the same day were collected together for the test.

[0016] I. javanica: Prepare 2 × 10 5 Spores / ml and 2×10 6 Spores / ml suspensions with two concentrations, ...

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Abstract

The invention discloses a method for reducing tomato yellow leaf curl virus content in bemisia tabaci by utilizing insecticide fungi isaria javanicus. In order to solve the problem that the tomato yellow leaf curl virus content in bemisia tabaci is not reduced for promoting the disease control effect, the insecticide fungi isaria javanicus is utilized to treat the bemisia tabaci and the tomato yellow leaf curl virus content in the bemisia tabaci can be obviously reduced, so that the capacity of transmitting virus of the bemisia tabaci can be weakened and the promotion for the control effect for the virus and disease is benefited. Compared with the traditional methods in production, for example, utilizing insect resistant variety, controlling the bemisia tabaci quantity and utilizing virus antagonist to prevent and control the tomato yellow leaf disease, the method disclosed by the invention has the advantages that the insecticide fungi isaria javanicus is utilized to reduce the tomato yellow leaf curl virus content in the bemisia tabaci so as to promote the virus control effect, the disease control mode is novel, the safety is high and the method has a certain application prospect.

Description

1. Technical field [0001] The invention belongs to the technical field of disease and insect pest control, and in particular relates to a method for reducing the plant virus content in whitefly by using the insecticidal fungus I. japonicus. 2. Technical Background [0002] The whitefly Bemisia tabaci is a worldwide pest, which directly damages crops by piercing and sucking. The greater damage is the spread of plant viruses, causing the spread of viral diseases and bringing devastating disasters to agricultural production. Tomato yellow leaf curl virus (Tomato Yellow Leaf Curl Virus, TYLCV) is the most important plant virus transmitted by whitefly. Virus. The strong invasiveness of Bemisia tabaci has caused the prevalence of tomato yellow leaf curl virus disease in many countries in Asia, Africa, America and other regions. Tomato yellow leaf curl virus disease has occurred and prevailed in most provinces of my country, causing crops Reduced production and lower quality of ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N63/04A01P1/00
CPCA01N63/30
Inventor 郭慧芳王壮张志春钟万芳
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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