Objective:To evaluate the antifeedant,larvicidal and insect growth inhibitory activities of crude extracts of Pseudocalymma alliaceum tested against fourth instar larvae of Spodoptera litura(S.litura)and Helicoverpa a...Objective:To evaluate the antifeedant,larvicidal and insect growth inhibitory activities of crude extracts of Pseudocalymma alliaceum tested against fourth instar larvae of Spodoptera litura(S.litura)and Helicoverpa armigera(H.armigera).Methods:Hexane,chloroform and ethyl acetate extracts were prepared and tested for antifeedant,insecticidal and growth inhibitory activities against fourth instar larvae of S.litura and H.armigera.Results:Ethyl acetate extract showed promising antifeedant,insecticidal activity against S.litura and H.armigera.Maximum percentage of deformed larvae,pupae and adults were found on treatment with ethyl acetate extract.Percentage of successful adult emergence was deteriorated by extract treated larvae.Ethyl acetate extracts of Pseudocalymma alliaceum,showed higher percentage of antifeedant,insecticidal and growth inhibition activities.Conclusions:This is the first report on S.litura and H.armigera.Further,the active compounds isolated from the ethyl acetate extracts will be useful for controlling economically important insect pests.展开更多
The essential oil from the leaves of Pseudocalymma alliaceum Sandw.was analyzed by GC-MS.The results indicated that there were twenty-seven peaks and seventeen compounds were identified.The identified compounds repres...The essential oil from the leaves of Pseudocalymma alliaceum Sandw.was analyzed by GC-MS.The results indicated that there were twenty-seven peaks and seventeen compounds were identified.The identified compounds represented 93.15% of total content.The major constituents were phytol(54.33%),diallyl disulfide(13.31%),1-octen-3-ol(8.25%),(Z)-3-hexen-1-ol(4.10%),diallyl trisulfide(2.00%),butyl propenyl sulfide(1.91%),etc.The sulfur-containing compounds represented 18.79% of total content.The results provide the basic data for the comprehensive utilization of P.alliaceum leaf.展开更多
基金Supported by UGC,New Delhi,India(Ref No.42-570/2013(SR)).
文摘Objective:To evaluate the antifeedant,larvicidal and insect growth inhibitory activities of crude extracts of Pseudocalymma alliaceum tested against fourth instar larvae of Spodoptera litura(S.litura)and Helicoverpa armigera(H.armigera).Methods:Hexane,chloroform and ethyl acetate extracts were prepared and tested for antifeedant,insecticidal and growth inhibitory activities against fourth instar larvae of S.litura and H.armigera.Results:Ethyl acetate extract showed promising antifeedant,insecticidal activity against S.litura and H.armigera.Maximum percentage of deformed larvae,pupae and adults were found on treatment with ethyl acetate extract.Percentage of successful adult emergence was deteriorated by extract treated larvae.Ethyl acetate extracts of Pseudocalymma alliaceum,showed higher percentage of antifeedant,insecticidal and growth inhibition activities.Conclusions:This is the first report on S.litura and H.armigera.Further,the active compounds isolated from the ethyl acetate extracts will be useful for controlling economically important insect pests.
文摘The essential oil from the leaves of Pseudocalymma alliaceum Sandw.was analyzed by GC-MS.The results indicated that there were twenty-seven peaks and seventeen compounds were identified.The identified compounds represented 93.15% of total content.The major constituents were phytol(54.33%),diallyl disulfide(13.31%),1-octen-3-ol(8.25%),(Z)-3-hexen-1-ol(4.10%),diallyl trisulfide(2.00%),butyl propenyl sulfide(1.91%),etc.The sulfur-containing compounds represented 18.79% of total content.The results provide the basic data for the comprehensive utilization of P.alliaceum leaf.
