| Karnal bunt |
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| Tilletia indica |
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Plant hosts
- Major hosts: Triticale, Triticum (wheat), Triticum aestivum (wheat)
To view larger picture click on image.
Image provided by Ruben Durán, Washington State University, United States.
Means of movement and dispersal
Plant parts liable to carry the pest in trade and transport:
- Seeds: spores are born internally and externally. Spores are invisible.
Plant parts not known to carry the pest in trade and transport:
- Bark.
- Bulbs, tubers, corms and rhizomes
- Fruits.
- Flowers.
- Leaves
- Seedlings and micropropagated plants.
- Roots.
- Stems.
- Wood.
Symptoms
Karnal bunt is at best difficult to detect and identify in the field. A microscope and biochemical tests are required to accurately identify the pathogen. The most conspicuous symptom is the presence of small numbers of harvested seeds containing tissue that is gray at first but later turns black. Discoloration is often limited to the embryo end only but may extend over the entire kernal.
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