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Biologia Plantarum

, Volume 18, Issue 4, pp 290–292 | Cite as

Some virus and virus-like diseases of tobacco, tomato, papaya, and rubber tree in vietnam and cambodia

  • J. BRčáK
  • J. POZDěNA
Article

Abstract

In Vietnam a green strain of tobacco mosaic virus was isolated having TIP 89°C (10 min) and causing systemic necrosis in tobacoo ‘Xanthi-nc’ and sometimes also inDatura stramonium. In symptomless tomato plants an elongated virus belonging apparently to the Carlavirus group (NL 630 nm) was found. In papaya trees showing severe symptoms of mosaic and/or ringspot elongated virus particles (NL 730 nm) were observed; this virus being apparently a member of the Potyvirus group, resembled as far as its symptoms in papaya are concerned, the papaya ringspot or the distortion ringspot. In Cambodia some young rubber trees showed malformed leaves (esp. edges and veins) with yellow discolorations along the veins. Such leaves contained elongated virus-like particles (rigid or slightly flexible) of various length (60 to 880 nm), so that their normal length (NL) could not be established precisely. Particles 120 to 150 nm long occurred very frequently.

Keywords

Tomato Plant Tobacco Mosaic Virus Rubber Tree Papaya Tree Necrotic Local Lesion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Institute of Experimental Botany 1976

Authors and Affiliations

  • J. BRčáK
    • 1
  • J. POZDěNA
    • 1
  1. 1.Institute of Experimental BotanyCzechoslovak Academy of SoiencesPrahaCzechoslovakia

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