The Plant Pathology Journal

Fig. 1.

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Fig. 1. Symptoms of Glomerella leaf spot (GLS) on apple. (A) Initial brown to ochre necrotic leaf lesions and (B) advanced, irregular and necrotic leaf lesions associated to chlorosis. (C) Fruit lesions surrounded by a red border. (D) Random distribution of leaf lesions in the tree. (E) Random distribution of symptoms in the orchards and severe defoliation in cv. Galaxy and (F) cv. Cripps pink. (G) Reproductive structures of Colletotrichum spp. over leaf lesion (black arrow). Structures present on leaves with typical symptoms of Glomerella leaf spot disease, collected from apple orchards. Detail of (H) acervuli and (I) perithecia. Micrsocopic detail of crushed (J) acervulus showing conidiphore and conida and (K) peritecium showing asci and ascospores.
Plant Pathol. J. 2019;35:100-11
© 2019 Plant Pathol. J.