Laboratory mutants of Venturia inaequalis resistant to sterol inhibitors
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Authors
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R. REVATHI, P. ANNAMALAI and D. LALITHAKUMARI
Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Madras 600 025
Keywords:
Venturia inaequalis, bitertanol, fenapanil, mutants, apple scabAbstract
Laboratory mutants of Venturia inaequalis resistant to two sterol inhibitors, viz., bitertanol and fenapanil were developed by adaptation and EMS mutation. Adapted mutants exhibited much higher resistance to test fungicides than the EMS mutants. Both the adapted and EMS fenapanil mutants completely lost ·the pigmentation and sporulation. The conidial size of bitertanol mutants showed significant reduction in their size over the sensitive strain.
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