Symptoms The whole plant was onset. The leaves showed mosaic symptoms and the leaves were shrunken and deformed.
Pathogens are caused by the cucumber mosaic virus {CMV}. The virus particles are globular, with a diameter of 35 nm, a toxic temperature of 60-70°C, a dilution end point of 1:10000, an in vitro virus protection period of 3-5 days, and tooth-to-mouth or juice contact. Wide range of hosts.
The virus of the transmission route may be transmitted through the aphid and sap rubbing to spread the virus, so that disease-free health strains will develop. Cucumber mosaic virus can be infected by aphids and sap, but the field is mainly aphid infection. Seeds can not be transmitted virus, pollen can not be infected with the pollen of the diseased plants. The locust transmission is non-persistent. After the locust first sucks on the diseased plant for a few minutes, the virus in the diseased plant sap is adsorbed on the mouthparts of the virus. Directly injected into the plant during the process. The most commonly transmitted locusts are Myzus persicae, followed by cotton aphids and Brassica oleracea.
Control methods
1. Strengthen cultivation management science fertilization: Reapply organic fertilizers, use compound fertilizers, increase application of phosphorus and potassium fertilizers, and avoid applying partial nitrogen fertilizers to improve plant nutrient conditions and improve its antiviral activity; Loose soil is conducive to plant root development.
2, timely eradication of weeds in the field, remove the source of infection. Early control of aphids and eradication of viral vectors.
Pathogens are caused by the cucumber mosaic virus {CMV}. The virus particles are globular, with a diameter of 35 nm, a toxic temperature of 60-70°C, a dilution end point of 1:10000, an in vitro virus protection period of 3-5 days, and tooth-to-mouth or juice contact. Wide range of hosts.
The virus of the transmission route may be transmitted through the aphid and sap rubbing to spread the virus, so that disease-free health strains will develop. Cucumber mosaic virus can be infected by aphids and sap, but the field is mainly aphid infection. Seeds can not be transmitted virus, pollen can not be infected with the pollen of the diseased plants. The locust transmission is non-persistent. After the locust first sucks on the diseased plant for a few minutes, the virus in the diseased plant sap is adsorbed on the mouthparts of the virus. Directly injected into the plant during the process. The most commonly transmitted locusts are Myzus persicae, followed by cotton aphids and Brassica oleracea.
Control methods
1. Strengthen cultivation management science fertilization: Reapply organic fertilizers, use compound fertilizers, increase application of phosphorus and potassium fertilizers, and avoid applying partial nitrogen fertilizers to improve plant nutrient conditions and improve its antiviral activity; Loose soil is conducive to plant root development.
2, timely eradication of weeds in the field, remove the source of infection. Early control of aphids and eradication of viral vectors.
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