Photo 1. The dark green distorted area on the leaf is typical of CBDV in the "male" taro, the common type of taro in the Pacific islands. This is not a serious disease as only 1-2 leaves are affected.
Photo 2. Bobone on the "female" taro variety Oga showing stunted distorted leaves (Malaita, Solomon Islands) after infection by CBDV.
Photo 3. Leaf infected with TaVCV showing the yellowing is along the smaller veins giving a feather-like symptom.
Photo 4. Leaf with symptoms of TaVCV. Note the yellow feather patterns are starting to decay as the leaf ages; this does not happen with Dasheen mosaic virus.
Photo 5. Feather like pattern on a leaf infected with TaVCV. Note the insects on the leaf are Tarophagus sp., which are likely to spread this virus.
Photo 6. Rod-shaped virus particles of TaVCV in a taro leaf. The virus particles can be seen lengthways and end on.
Bobone and an unnamed disease
Colocasia bobone rhabdovirus (CBDV) and Taro vein chlorosis virus (TaVCV).
AUTHORS Helen Tsatsia & Grahame Jackson
Photo 6 Rothamsted Research, Harpenden, UK.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
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