Overview: Diseases caused by parasitic melon viruses. The melon virus must live in parasites in melon cells and be highly specialized. A certain virus can infect only one or some plants. But there are also a few diseases that are widespread; such as melon mosaic virus and cucumber mosaic virus. Generally melon viruses have activity only in host hosts; only a few melon viruses can remain active for several days, months, or even years in diseased plant residues. The virus replicates nucleic acid (RNA or DNA) and protein coats in melon cells to form new virions. Plant virion or viral nucleic acid transfer between plant cells is very slow, while in the vascular bundle can be quickly transferred with the direction of the plant's nutrient flow, making the whole plant disease. Hazardous symptoms: There are three main types of symptoms of melon virus disease. One is the appearance of bright veins in the heart, followed by development of mosaic or dark green lesions, malformations, and the diseased leaves shrink in drought, and the melon vines lose their ability to produce results. The second type is yellowing type, which is initially chlorotic and yellow spots on the leaves, and then turns into mottled mosaics. The leaves turn yellow and thick, the veins are prominent, the leaf edges are zigzag, the plants are dwarfed and the internodes are short. The third type is necrotic type, with irregular necrotic chlorotic spots and streak on the leaves, and dwarfing in severe cases. Incidence patterns: melon seeds can be toxic, but also through cotton aphid, peach aphid and mechanical friction infection. High temperature, drought or strong light is conducive to disease. Early and late onset, the severity of the disease and the rate of seed poisoning are related to the melon growth climate. The rate of seed poisoning is high and the disease occurs early. During the growing season, the weather is dry and hot, and the number of aphids is high and the incidence is heavy. LH Ovulation Test Kit,LH Ovulation Test Midstream,Female LH Ovulation Test Midstream,Self Check Lh Ovulation Test Weihai Kangzhou Biotechnology Engineering Co.,Ltd , https://www.weihaikangzhou.com