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. 2015 Sep 29;6:794. doi: 10.3389/fpls.2015.00794

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Copyright © 2015 Fatouros, Paniagua Voirol, Drizou, Doan, Pineda, Frago and van Loon.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Proportion (mean ± SE) of female Trichogramma evanescens wasps choosing volatiles of differently treated B. nigra plants when tested against untreated or solvent-treated control plants in a Y-tube olfactometer. Each treatment, (1) P. brassicae eggs 24 h after egg deposition, (2) ARG (of virgin P. brassicae females, (3) ARG of mated P. brassicae females 2 h after mating, (4) ARG of mated P. brassicae females 48 h after mating, (5–6) BC in two concentrations (1 and 10 ng/100 μl ethanol) was replicated with four to seven plant pairs and 20 wasps per plant pair (n = 80–140 wasps per treatment). ^∗p < 0.05, ns, not significant (p > 0.05); one-sample t-test. The dashed line indicates 0.5 = no preference. For statistical analysis, data were first arcsine transformed and then back-transformed for presentation.