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The infection and perennation of the bitter rot fungus, Gloeosporium album , on apple leaves
Author(s) -
TAN A. M.,
BURCHILL R. T.
Publication year - 1972
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1972.tb04705.x
Subject(s) - biology , fungus , conidium , orange (colour) , mycelium , botany , leaf spot , horticulture
SUMMARY In the period from late spring to leaf‐fall (May‐November) Gloeosporium album Osterw. was regularly isolated from leaves of the apple variety Cox's Orange Pippin affected by the disorder called ‘Cox‐spot’. The fungus grew epiphytically on healthy apple leaves, producing a network of mycelium which developed sporulating pustules when in contact with damaged or moribund tissues. Both the imperfect and perfect stages of the fungus were found on overwintered leaves; isolates from ascospores and conidia proved pathogenic on wood and fruit.