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Ibrahim, H. (2015). CHARACTERIZATION OF CHEMICAL CONSTITUENTS OF Citrullus colocynthis (L.) EXTRACTS AND THEIR RELATION TO TOXICITY AGAINST COWPEA APHID, Aphis Craccivora Koch.. Journal of Plant Protection and Pathology, 6(10), 1323-1336. doi: 10.21608/jppp.2015.75284
Heba Y. E. Ibrahim. "CHARACTERIZATION OF CHEMICAL CONSTITUENTS OF Citrullus colocynthis (L.) EXTRACTS AND THEIR RELATION TO TOXICITY AGAINST COWPEA APHID, Aphis Craccivora Koch.". Journal of Plant Protection and Pathology, 6, 10, 2015, 1323-1336. doi: 10.21608/jppp.2015.75284
Ibrahim, H. (2015). 'CHARACTERIZATION OF CHEMICAL CONSTITUENTS OF Citrullus colocynthis (L.) EXTRACTS AND THEIR RELATION TO TOXICITY AGAINST COWPEA APHID, Aphis Craccivora Koch.', Journal of Plant Protection and Pathology, 6(10), pp. 1323-1336. doi: 10.21608/jppp.2015.75284
Ibrahim, H. CHARACTERIZATION OF CHEMICAL CONSTITUENTS OF Citrullus colocynthis (L.) EXTRACTS AND THEIR RELATION TO TOXICITY AGAINST COWPEA APHID, Aphis Craccivora Koch.. Journal of Plant Protection and Pathology, 2015; 6(10): 1323-1336. doi: 10.21608/jppp.2015.75284

CHARACTERIZATION OF CHEMICAL CONSTITUENTS OF Citrullus colocynthis (L.) EXTRACTS AND THEIR RELATION TO TOXICITY AGAINST COWPEA APHID, Aphis Craccivora Koch.

Article 1, Volume 6, Issue 10, October 2015, Page 1323-1336  XML PDF (441.67 K)
Document Type: Original Article
DOI: 10.21608/jppp.2015.75284
Author
Heba Y. E. Ibrahim
Plant protection Research Institute, ARC, Dokki, Giza, Egypt.
Abstract
Citrullus colocynthis (L.) fruits were separately extracted with different organic solvents (petroleum ether, ethyl acetate and methanol). The volatile components of each solvent extract were characterized and identified by GC/MS technique. The insecticidal properties of each extracts were tested against adults and nymphs of cowpea aphid, Aphis  craccivora Koch.  Methanol extract was the most efficient against both adults and nymphs with LC50 : 639.68 ppm and LC50: 555.9 ppm, respectively. Ethyl acetate extract showed moderate efficacy against adults and nymphs with LC50 : 968.85 ppm and LC50: 833.58 ppm, respectively. Petroleum ether extract showed weak toxicity against adults and nymphs with 3144.99 ppm and LC50: 2768.52 ppm, respectively. 
 
Keywords
Aphis craccivora; Citrullus colocynthis; GC/MS analysis of colothyn extract
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