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Sclerotinia minor on lettuce: progress of an epidemic
Author(s) -
JARVIS W. R.,
HAWTHORNE B. 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.tb04706.x
Subject(s) - biology , sclerotinia , germination , mycelium , agronomy , plant disease , botany , crop , horticulture , microbiology and biotechnology
SUMMARY Analyses of disease progress curves of lettuce drop, caused by Sclerotinia minor , indicate that early infected plants sometimes provide inocula for later secondary spread within the crop, there sometimes being evidence of plant‐to‐plant spread. It is suggested that primary infections are attributable to aerially dispersed ascospores, produced by germinating sclerotia which are soil‐borne, and that secondary plant‐to‐plant spread is associated with mycelial inocula.