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Effects of herbivory and genotype on growth and survivorship of sand‐dune willow ( Salix cordata )
Author(s) -
BACH CATHERINE E.
Publication year - 1994
Publication title -
ecological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.865
H-Index - 81
eISSN - 1365-2311
pISSN - 0307-6946
DOI - 10.1111/j.1365-2311.1994.tb00246.x
Subject(s) - herbivore , willow , biology , botany , resistance (ecology) , salicaceae , woody plant , agronomy
.1 The response of different clones of sand‐dune willow, Salix cordata , to herbivory by a specialist herbivore, Altica subplicata , was studied in three glasshouse experiments. Plants were caged and exposed to three herbivory treatments: no beetles, low number of beetles, and high number of beetles. 2 Plants consistently had significantly higher growth rates in the absence of herbivory than under conditions of low or high herbivory (1.5–6 times higher). 3 Herbivore treatment influenced mortality from drought stress; more plants from the low and high herbivory treatments (40% and 80%) died from drought stress than did control plants (0%). 4 Clone genotype significantly influenced growth rates and the susceptibility of plants to drought stress. However, clones showed similar growth responses to herbivory, suggesting a lack of genetic variation in tolerance or resistance to herbivory.