Biological activities of Ipomoea carnea (Jacq.) extracts and chlorpyrifos on the cotton worm Spodoptera littoralis (Boisd.)

Joint Event on 10^th International Conference on Genomics and Molecular Biology & 6^th International Conference on Integrative Biology

May 21-23, 2018 Barcelona, Spain

Mamdouh I Nassar, Mohamed T Taha, Hala M I Mead and Mohamed G M Salama

Cairo University, Egypt
Al-Azhar University, Egypt
Plant Protection Research Institute, Egypt

Posters & Accepted Abstracts: J Mol Genet Med

Abstract :

Biological activities of different safety botanical extracts were very potent against many insect species. The cotton leaf worm, Spodoptera littoralis (Boisd.) is a highly polyphagous insect that causes damages to more than 112 plant species around the word. The toxic effect of Ipomoea carnea (I. carnea) extracts against 4th instar larvae revealed that LC50 and LC90 values of I. carnea extracts were 24.622 and 164.947 ppm, respectively while, LC50 and LC90 of 4th instar larva treated with chlorpyrifos insecticide was 9.497 and 91.126 ppm, respectively. On the other hand all the tested treatments were significantly affected during the larvae, pupae and adult stage. LC50 of I. carnea extracts produced the highest significant increase of total immature duration which was 28.66 days, followed by chlorpyrifos, 28.40 days compared to controls (22.57 days). Adult longevity was slightly affected while the female fertility was decreased by 1277.65 and 1300.79 due to LC50 of I. carnea and chlorpyrifos, respectively compared to controls (1969.23). Moreover, larvae, pupae and adult deformation of S. littoralis were obtained after treatment of 4th instar treated with I. carnea extracts (16%, 6%, and 10%) and chlorpyrifos compound (0%, 6%, and 6%) of larvae, pupa and adult stages, respectively. This study suggested that I. carnea was very essential to attract alternatives to synthetic chemical pesticides for pest management as they reportedly pose threat to the environment and human health. mmnassar2002@yahoo.com