Influence of temperature and leaf wetness period (LWP) on the incidence and severity of gala leaf spot (Colletotrichum spp.)

Authors

  • Natasha Akemi Hamada Mestrado em Recursos Genéticos Vegetais na Universidade Federal de Santa Catarina

    DOI:

    https://doi.org/10.52945/rac.v18i2.970

    Keywords:

    apple tree, disease, epidemiology

    Abstract

    To understand the life cycle of the causal agent of gala-leaf-spot (GLS), potted apple plants cultivar
    Gala were inoculated using spore suspension of C. gloeosporioides and submitted to different leaf wetness periods (LWP) at temperatures of 12 and 16oC. At 12oC, the symptoms appeared later and it required longer LWP than at 16oC (after eight days with 72 hours LWP, and after six days with 24 hours LWP, respectively). According to the
    results temperature of 12oC is marginal to GLS infection, as in this temperature the fungus is able to establish on apple leaf but did not manifest symptoms until the occurrence of higher temperatures.

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    Published

    2005-06-23

    Issue

    Vol. 18 No. 2 (2005)

    Section

    Scientific article

    License

    Copyright (c) 2005 Agropecuaria catarinense

    Creative Commons License

    This work is licensed under a Creative Commons Attribution 4.0 International License.

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    How to Cite

    Influence of temperature and leaf wetness period (LWP) on the incidence and severity of gala leaf spot (Colletotrichum spp.). (2005). Agropecuária Catarinense Journal, 18(2), 73-77. https://doi.org/10.52945/rac.v18i2.970