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A DISEASE OF THE VIOLA CAUSED BY RAMULARIA DEFLECTENS
Author(s) -
CAMPBELL MARIE E.
Publication year - 1938
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.1744-7348.1938.tb04352.x
Subject(s) - pycnidium , biology , sclerotium , botany , fungus , spring (device) , mechanical engineering , engineering
S ummary1 Viola plants, of the variety Kate Blyth, which were badly infected with the fungus Ramularia deflecens , were received from Coventry in the early spring. 2 Sclerotium‐like bodies were found on the leaves. 3 Pycnidia containing pycnospores were obtained in culture. 4 By comparison it is seen that these sclerotium‐like bodies are really pycnidia which have not developed fully. 5 The formation of pycnidia in culture depends on nutrition. 6 Perithecia are found neither on the plant nor in cdture. 7 In the early spring positive results from infection experiments are obtained.