Standardsignatur
Titel
Occurrence of Sphaeropsis knot on citron (Citrus medica L.) in Puerto Rico
Verfasser
Rocío Rodruguez (*)
Pedro L. Meléndez
Erscheinungsort
Rio Piedras
Verlag
University of Puerto Rico
Erscheinungsjahr
1984
Seiten
S. 179-183
Material
Bandaufführung
Datensatznummer
172693
Quelle
Journal of agriculture of the University of Puerto Rico, S. 179-183
Abstract
Citron (Citrus medica L.) stems and branches showing numerous round to elongated knots were brought to the laboratory for diagnosis. Microscopic studies of dried small knots revealed the presence of picidia bearing conidia typical of the fungus Sphaeropsis tumefaciens Hedges. Original disease symptoms were reproduced through pathogenicity trials conduced in the greenhouse.