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Guignardia citricarpa a Cause of Black Spot on Mango Foliage in Florida 1
Author(s) -
McMillan R. T.
Publication year - 1986
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1986.tb00940.x
Subject(s) - biology , mangifera , benomyl , ascospore , black spot , inoculation , botany , horticulture , germination , fungus , fungicide , spore
A strain of Guignardia citricarpa Kiely was isolated from infected mango ( Mangifera indica L.) leaves. The morphological and physiological characteristics of perithecia and ascospores were identical with those described for G. citricarpa. Inoculated leaves developed lesions 7 to 10 days after ascospore germination. Young lesions appeared as minute, sunken, blackish depressions on upper and lower leaf surfaces. Mature lesions were roughly circular ranging from 1 to 2 mm in diameter. The fungus was consistently reisolated from the lesions which appeared on the leaves, arising from inoculation. Benomyl at 1.7 g/l provided control of black spot.