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Cryphonectria cubensis, a potential pathogen of Psidium guajava in South Africa
Author(s) -
Swart W. J.,
Conradie E.,
Wingfield M. J.
Publication year - 1991
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1991.tb00779.x
Subject(s) - psidium , inoculation , cryphonectria , biology , syzygium , pathogenicity , eucalyptus , myrtaceae , tropical fruit , host (biology) , horticulture , botany , colonization , pathogen , microbiology and biotechnology , ecology , virulence , biochemistry , gene
The pathogenicity of an isolate of Cryphonectria cubensis was tested in artificial inoculations on Eucalyptus grandis, Psidium guajava and Syzygium cordatmn . The isolate was able to colonize host tissue of all three species following inoculations of branch sections. It rapidly colonized the tissue of potted guava plants of the important commercial cultivar, Fan Relief and resulted in the death of a number of inoculated branches. Pathogenicity was also proven on mature guava trees in the field. An important implication of these findings is that the cultivation of guavas in South Africa could be confronted with a potentially severe disease problem in the future.