Latent mosaic disease of carnation
[pathogen] Carnation latent virus (Carnationlatantvirus,CaLV), lethal temperature 60-65 ℃. The in vitro survival time was 20 ℃ for 2-6 days.
Mosaic can be produced when co-infected with carnation vein mottle virus. Obvious chlorotic foliage can be formed on the indicator plants.
[incidence regularity and epidemic characteristics] the above viruses are mainly transmitted by plant sap and peach aphids, and can also be transmitted by cutting flowers, picking buds, cutting strips and other operating tools or artificial friction. Virus insertion is also an important way for virus transmission. The host range of objective existence is narrow, but the distribution of damage is almost all over the world. The plant is too dense and the diseased and healthy leaves rub against each other, which is beneficial to the occurrence and development of the disease.
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Latent disease of carnation
[symptoms] there are few or no symptoms on carnation. The infection of carnation latent virus alone is not serious, but when it is co-infected with carnation vein mottle virus, it produces serious mosaic. Carnation latent virus (CarnationlatentCaravirus,CLV). It belongs to the genus Carnation latent virus. The virion is straight or slightly curved, 652nm × 12~13nm, and it has also been reported as 620~690nm × 10~12nm.
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ring rot of carnation
Carnation etchedring virus (CaERV), lethal temperature 80-85℃. The survival time in vitro is 140 days. [Symptoms] Annular or wide linear necrotic spots appear on leaves, which are more obvious on seedlings. In severe cases, necrotic spots are connected and leaves are twisted.
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