Letter | Published:

A New Virus Disease of the Tobacco Plant

Nature volume 128, pages 187188 (01 August 1931) | Download Citation



IN recent years investigators have recognised many virus diseases of the tobacco plant, all, however, producing chlorosis or necrosis of the leaves. I have investigated at Amani a disease of different manifestation, which I believe to be caused by a virus. The characteristic symptom of this disease is leafy outgrowths from the veins on the lower surface of the leaves, sometimes up to a centimetre wide, but usually amounting to no more than a dark green thickening of sections of the veins. Combined with this feature is a stunting of the whole plant and twisting and curling of the leaves. The manifestation of the disease varies greatly according to environmental conditions and the variety of tobacco concerned. I have, however, never observed chlorosis or necrosis in affected plants.

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  1. 1.

    Rept. of Proceedings, Pan-African Agricultural and Veterinary Conference, Pretoria, 1929, p.91.

  2. 2.

    , Bull. Ent. Res., 21, pp. 169–183.

  3. 3.

    , Bull. Ent. Res., 21, pp. 127–137.

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  1. East African Agricultural Research Station, Amani, Tanganyika Territory, June 17.

    • H. H. STOREY


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