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The effect of harvest date and duration of wound healing conditions on the susceptibility of damaged potato tubers to infection by Phoma exigua (gangrene)
Author(s) -
ADAMS M. J.,
GRIFFITH R. L.
Publication year - 1978
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.1744-7348.1978.tb00678.x
Subject(s) - biology , phoma , gangrene , curing (chemistry) , inoculation , horticulture , exigua , botany , surgery , medicine , chemistry , biochemistry , spodoptera , gene , polymer chemistry , recombinant dna
SUMMARY In experiments extending over 3 yr, King Edward tubers harvested on various dates from early September until early November were uniformly wounded and kept at 15 o C and c. 95% r.h. for periods of up to 21 days for wounds to cure. When tubers were subsequently inoculated with Phoma exigua var.foveata and incubated at 5 o C for 12 wk, curing for 3 and 7 days decreased gangrene incidence to respectively c. 13 and 4% of the non‐cured controls. When tubers were inoculated before curing and immediately after wounding, curing for 7 days decreased gangrene incidence to only c. 68% of the non‐cured controls. Curing was also progressively less effective the later the date of harvesting, suggesting that there would be advantages in harvesting potato crops early in the autumn.