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Oecologia

Title:		Environmental conditions affecting the strength of induced resistance against mites in cotton
Author(s):		Karban R;
Address:		"Department of Entomology, University of California, 95616, Davis, CA, USA"
Journal Title:		Oecologia
Year:		1987
Volume:		73
Issue:		3
Page Number:		414 - 419
DOI:		10.1007/BF00385258
ISSN/ISBN:		1432-1939 (Electronic) 0029-8549 (Linking)
Abstract:		"Spider mites (Tetranychus urticae) were raised on cotton plants that had been damaged by a previous bout of mite feeding (T. turkestani) and on control plants that were previously not exposed to mites. The effect of induced plant responses upon mite populations was variable ranging from a 4-fold reduction in population growth to no difference at all. The strength of induced resistance was greatest when the population growth of mites was low for other, unknown, reasons. When mite population growth on control plants was great, the effects of induced resistance were diminished.Mite population growth was inversely related to levels of initial damage caused by previous feeding. There was no evidence of a damage threshold that needed to be exceeded before induced resistance became effective. Increased levels of initial damage were not associated with morphological changes in the plants"
Keywords:		Cotton Induced resistance Plant-herbivore interactions Population regulation Spider mites;
Notes:		"PubMed-not-MEDLINEKarban, R eng Germany 1987/09/01 Oecologia. 1987 Sep; 73(3):414-419. doi: 10.1007/BF00385258"