Molecules 2012, 17(6), 7533-7542; doi:10.3390/molecules17067533
Article

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

Fei Yi † , Chunhua Zou † , Qiongbo Hu* email and Meiying Hu
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; in revised form: 7 June 2012 / Accepted: 12 June 2012 / Published: 18 June 2012
(This article belongs to the Section Natural Products)
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Abstract: 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.
Keywords: destruxins; rotenone; paeonulum; azadirachtin; Aphis gossypii

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Cite This Article

MDPI and ACS Style

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.

AMA Style

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(6):7533-7542.

Chicago/Turabian Style

Yi, Fei; Zou, Chunhua; Hu, Qiongbo; Hu, Meiying. 2012. "The Joint Action of Destruxins and Botanical Insecticides (Rotenone, Azadirachtin and Paeonolum) Against the Cotton Aphid, Aphis gossypii Glover." Molecules 17, no. 6: 7533-7542.

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