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Wheat Debris as an Inoculum Source for Seedling Infection by Septoria tritici
Author(s) -
BROKENSHIRE T.
Publication year - 1975
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1975.tb01895.x
Subject(s) - biology , septoria , seedling , spore , debris , inoculation , crop , agronomy , cultivar , horticulture , botany , oceanography , geology
SUMMARY Wheat debris was found to be a possible inoculum source for early seedling infection by Septoria tritici. After 50 days, spores from buried debris showed less than 10 per cent viability whilst those from surface debris showed 70 per cent viability. Pathogenicity on wheat seedlings declined with viability. Samples of surface debris from a naturally infected winter wheat crop showed pycnidiospore viability and pathogenicity on wheat seedlings six months after harvest. Maximum pycnidiospore production, on debris occurred after a period of high humidity. Spore production on debris occurred in cycles; the number of cycles and intensity of sporulation depended on the wheat cultivar. Possible control measures to limit disease carry‐over on debris are discussed.