What is tobacco mosaic disease?

What is tobacco mosaic disease? There are two symptoms of tobacco mosaic disease. 1. Common mosaic disease: infected by the virus, young leaves first began to disease, along the veins of the mesophyll color yellow, appear bright veins. Then dark or light part gradually expanded, forming yellow and green mottled (mosaic); severe leaf thickness uneven, forming blisters, leaf margin to the back curl, leaf shrinkage distortion, was abnormal, there were notches or bands. Early onset, serious dwarfing of plants, shortened internodes, no trees, no leaves. 2. Cucumber mosaic disease: infected by the virus damage, the initial onset of transparent veins, after the change of mosaic, narrow leaves, distortion, surface hair loss, loss of luster. Some diseased leaves often curl upward, some appear yellow-green or dark green spots, some appear brown necrosis of lateral veins, or dark brown lightning-like necrosis along veins. The plant obviously dwarfs, the root system development is bad, -the dead part leaf often appears "the mosaic burns the spot". Click for more tobacco growing technology Click for more flower growing technology