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Comparison of the Distributions of the Pink and the Green Biotypes of the Potato Aphid, Macrosiphum euphorbiae (Thos.), on Potato Plants
Author(s) -
Wightman J. A.,
Gibson R. W.
Publication year - 1972
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.1365-3059.1972.tb01726.x
Subject(s) - macrosiphum euphorbiae , biology , aphid , botany , horticulture , pest analysis , aphididae , homoptera
SUMMARY Field trials were condueted in 1967 and 1969 in south‐west England to compare the distributions on potato plants of green and pink biotypes of Macrosiphum euphorbiae. In both trials, the green biotype was most abundant on the lower, older leaves, whereas the pink biotype was of similar abundanee on all leaves irrespective of their position on the plant. Furthermore, the numerical predominence of the green biotype was greater on older plants.