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Rhizomania

Rhizomania is a plant disease of the Chenopodiaceae family caused by the development of a virus called BNYVV (Beet Necrotic Yellow Vein Virus), which is introduced and transmitted by the soil fungus Polymyxa betae.

Rhizomania is a virus disease which may cause heavy losses in yield and quality.

Symptoms

  • patchy yellowing of beet leaves in the field
  • long petioles, narrow leaf blade
  • stunting and development of a root beard
  • browning of the vascular bundle rings after cutting

Additional characteristic

  • increased sodium content
  • reduced sugar content
  • reduced amino-nitrogen content
  • yield loss

Evidence of the disease: ELISA test in the laboratory

A chemical control of Rhizomania is not possible, the only useful measure at present is the growing of† tolerant varieties. A permanent solution to the problem of controlling Rhizomania can only be obtained by resistance breeding and may be achieved by genetic engineering.

Image gallery of Rhizomania

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