Jianlan light mosaic disease

Jian Lan light mosaic disease (Cymbidium mild moasic)

1. Harm: distributed in Japan, mainly harmful to Jianlan.

2. Symptoms: mosaic or light mottling on Jian Lan.

3. Pathogen: Jian Lan light mosaic virus (Cymbidium mild mosaic virus,CyMMV). The virion is globular and 28~3Onm in diameter. The virion is dispersed in the cytoplasm or nucleus of the host.

4. characteristics of the disease: the virus is transmitted by juice.

5. Prevention and control methods:

(1) for some valuable virus-free orchids, they must be isolated from the orchid production base.

(2) in gardening operations such as ramets and turning pots, fingers and tools have to be re-sterilized every time they are planted.

(3) washing roots cannot be washed in the same container, and running water should be used to wash roots.

(4) the media such as peat, moss and gravel used for orchid culture should be disinfected.

Liu Zhongjian