Nonglandular leaf trichomes as short-term inducible defense of the grey alder, Alnus incana (L.), against the chrysomelid beetle, Agelastica alni L.

@article{Baur1991NonglandularLT,
  title={Nonglandular leaf trichomes as short-term inducible defense of the grey alder, Alnus incana (L.), against the chrysomelid beetle, Agelastica alni L.},
  author={R. Baur and Suzanne Binder and Gabriele Benz},
  journal={Oecologia},
  year={1991},
  volume={87},
  pages={219-226}
}
The grey alder compensates leaf area losses due to insect grazing by continuously producing new leaves throughout the vegetative period. Different degrees of defoliation were attained experimentally by a controlled release of the oligophagous beetle Agelastica alni on arbitrarily selected trees from a homogenous population of young alders. The reduction in leaf area per tree significantly influenced the density of leaf trichomes, assessed 10–30 days later, on newly sprouting leaves only. Cross… CONTINUE READING
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Interactions between the grey alder, Alnus incana (L.), and the alder beetle, Agelastica alni (L.): Signs indicating insect-induced resistance of the tree

  • M Scheiwiller, G Benz
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  • 1991

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