Thursday, January 22, 2009

Powdery Mildew Cleistothecia - UPDATE 22/1/2009


A light infection of Powdery on the berries – if you look closely you can see Cleistothecia. Cleistothecia are small fungal fruit-bodies that contain microscopic ‘seeds’ (called ascospores). These seeds fall off and lodge in bark to survive over winter. Powdery infection next spring comes from these spores, or alternatively flag shoots which are buds that were infected with powdery early this season.

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