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Electrical resistance and stem water relations in Verticillium‐infected red maple 1
Author(s) -
Newbanks D.,
Tattar T. A.
Publication year - 1982
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1982.tb01381.x
Subject(s) - maple , biology , verticillium dahliae , botany , verticillium , resistance (ecology) , horticulture , agronomy
An inverse relationship exists between stem water potential and electrical resistance (ER) in healthy red maple Acer rubrum L. (r = ‐ .93 to r = ‐ .98). Stem ER of red maple seedlings was measured at 1 to 2 day intervals during a 14 week course of infection by Verticillium dahliae Klebahn. No significant differences (P = .05) in ER were found between moderately to severely infected and control plants, although stem water potential of infected plants was significantly lower than the control plants. In plants which displayed only slight if any symptoms and in which no significant change in stem water potential occurred, ER of the infected plants was significantly lower than that of the control plants.