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Molecules 2012, 17(6), 7533-7542;

The Joint Action of Destruxins and Botanical Insecticides (Rotenone, Azadirachtin and Paeonolum) Against the Cotton Aphid, Aphis gossypii Glover

College of Resources and Environment, South China Agricultural University, Guangzhou 510602, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 28 April 2012 / Revised: 7 June 2012 / Accepted: 12 June 2012 / Published: 18 June 2012
(This article belongs to the Section Natural Products Chemistry)
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The joint action of destruxins and three botanical insecticides, rotenone (Rot), azadirachtin (Aza) and paeonolum (Pae) against the cotton aphid, Aphis gossypii, was bioassayed. In laboratory experiment, several synergistic groups of destruxins with botanical insecticides were found by means of Sun’s Co-toxicity Coefficients (CTC) and Finney’s Synergistic Coefficient (SC). The best synergistic effect was discovered in the ratio group Des/Rot 1/9 with the CTC or SC and LC50 values of 479.93 or 4.8 and 0.06 μg/mL, respectively. The second and third synergistic effects were recorded in the ratio groups Des/Rot 7/3 and 9/1. Although the ratio groups Des/Aza 6/4, Des/Pae 4/6, 3/7 and 2/8 indicated synergism by Sun’s CTC, they were determined as additive actions by Finney’s SC. Additive actions were also found in most of the ratio groups, but antagonism were recorded only in three ratio groups: Des/Pae 9/1, 7/3 and 6/4. In greenhouse tests, the highest mortality was 98.9% with the treatment Des/Rot 1/9 at 0.60 μg/mL, meanwhile, the treatments Des/Pae 4/6 and Des/Aza 6/4 had approximately 88% mortality. View Full-Text
Keywords: destruxins; rotenone; paeonulum; azadirachtin; Aphis gossypii destruxins; rotenone; paeonulum; azadirachtin; Aphis gossypii
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Yi, F.; Zou, C.; Hu, Q.; Hu, M. The Joint Action of Destruxins and Botanical Insecticides (Rotenone, Azadirachtin and Paeonolum) Against the Cotton Aphid, Aphis gossypii Glover. Molecules 2012, 17, 7533-7542.

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