Occurrence of Sphaeropsis knot on citron (Citrus medica L.) in Puerto Rico

Rio Piedras

1984

S. 179-183

Bandaufführung

172693

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.