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Variations in sensitivity of isolates of Geotrichum candidum to the fungicide guazatine

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Abstract

Isolates of Geotrichum candidum from citrus, cantaloupe, tomato, lychee and potato were tested for their in vitro sensitivity to the fungicide guazatine. Citrus isolates were most sensitive, a tomato isolate the most tolerant, while all other isolates were of intermediate sensitivity. No differences were found in their morphology. The different responses to guazatine supported the concept of a ‘citrus race’ based on physiological differences. The potential for selecting more guazatine-tolerant strains from tomatoes, if guazatine is used to control sour rot, is discussed.

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Authors and Affiliations

  1. Gosford Horticultural Postharvest Laboratory, NSW Agriculture, 2250, Gosford, New South Wales

    B. L. Wild

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  1. B. L. Wild
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Wild, B.L. Variations in sensitivity of isolates of Geotrichum candidum to the fungicide guazatine. Australasian Plant Pathology 21, 13–15 (1992). https://doi.org/10.1071/APP9920013

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  • DOI: https://doi.org/10.1071/APP9920013

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