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Black Speck on Cabbage in Kent
Author(s) -
COOK R. J.
Publication year - 1976
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.1365-3059.1976.tb01955.x
Subject(s) - biology , guard cell , guard (computer science) , black spot , horticulture , botany , computer science , programming language
SUMMARY Black speck is a non‐parasitic disease of cabbage in Florida, U.S.A.; similar symptoms have been studied, on non‐hearting cabbage for antigun cutting in Kent. Lesions are usually black, 0.1–2.0 mm diameter, often with a chlorotic halo. Development of individual lesions starts with necrosis of the stomatal guard cells. No pathogen has been consistently isolated from lesions although Stemphylium spp. and Pseudomonas viridiflava were frequently obtained. The lesions are believed to be physiological in origin. Grateful thanks are due to several farmers in north and east Kent for their help and cooperation in these observations, and also to many A.D.A.S. colleagues, in particular Miss L. A. E. Baker, Miss M. Bateson and Mrs. M. A. Carter, for technical assistance. Thanks are also due to staff at the National Vegetable Research Station, Wellesboume, and Asmer Seeds Ltd.