Tilletia indica

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Tilletia indica teliospore (SEM) (click on image to enlarge it)
Author(s): Jim Plaskowitz, USDA Agricultural Research Service
Source: IPM Images

Tilletia indica Mitra (1931) - (Karnal bunt)

The fungus affects wheat and some other cereals in India, neighbouring countries and Africa. It has been found also in North and Central America since 1996. The disease is named after the town Karnal in northern India from where it was first described in 1931. Infections can result in yield losses of up to 20%.

The teliospores persist on seeds and in the soil. They spread mainly through contaminated seeds and farming tools. Under laboratory conditions the teliospores have been reported to survive for at least 16 years. The infections occur mainly during the flowering or grain filling stage of the host plant and result in the development of masses of dark brown spores at the embryo end of the kernels.

Vernacular names
• Deutsch: Indischer Weizenbrand
• English: karnal bunt
• Français: carie de Karnal

Management of the disease involves mainly cultural methods, fungicides and the use of resistant cultivars.

Synonyms:
Neovossia indica

For details see the respective page in Wikipedia.