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Evaluation of the Insecticidal Effects of Aqueous Extracts of the Leaves of:Erythrophleum guineense and Uvaria chamae against Caryedon serratus Ol.(Coleoptera,Bruchidae),an Insect Pest of Groundnut Grains in the Republic of Guinea
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作者 Aboubacar Safi Sylla Adama Moussa Sakho +1 位作者 Aboubacar Diallo Abdoulaye Keita 《Journal of Environmental Science and Engineering(A)》 CAS 2024年第6期199-206,共8页
The aim of this study is to evaluate the insecticidal potential of aqueous extracts of the leaves of Erythrophleum guineense and Uvaria chamae on Caryedon serratus Ol.(Coleoptera,Bruchidae),an insect pest of groundnut... The aim of this study is to evaluate the insecticidal potential of aqueous extracts of the leaves of Erythrophleum guineense and Uvaria chamae on Caryedon serratus Ol.(Coleoptera,Bruchidae),an insect pest of groundnut grains in the Republic of Guinea.To do this,tests on their insecticidal efficacy were carried out separately on groups of 8 bruchids using concentrations of aqueous extracts from their leaves in jars each containing 20 g of groundnut.The mortality of the bruchids and the impact of their aqueous extracts were observed and recorded for 96 h and 120 days after infestation,followed by a test of the germinative power of the seeds.Concentrations(C1)of aqueous extracts of the leaves of Erythrophleum guineense and Uvaria chamae applied to 20 g of groundnut resulted in bruchid mortality of 86.99%and 78.82%of each plant respectively.At the same doses,the treated seeds were not attacked during 4 months’storage.The germination rate of groundnut seeds at the start and end of the experiment was 97.65%and 93.60%respectively.Thus,aqueous extracts of the leaves of Erythrophleum guineense and Uvaria chamae can be considered as an alternative bio-insecticide against pests in groundnut storage shops. 展开更多
关键词 Insecticidal effect Erythrophleum guineense Uvaria chamae Caryedon serratus Ol
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Two New Isoprenylated Stilbenes from Artocarpus chama
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作者 Yong-Hong Wang Ai-Jun Hou Dao-Feng Chen 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2007年第5期605-608,共4页
Two new stllbenes with two Isoprenoid groups, namely artostllbenes A (compound 1) and B (compound 2), were Isolated from the stems of Arfocarpus chama Buch.-Ham. by repeated column chromatography. The& structures... Two new stllbenes with two Isoprenoid groups, namely artostllbenes A (compound 1) and B (compound 2), were Isolated from the stems of Arfocarpus chama Buch.-Ham. by repeated column chromatography. The& structures were elucldated as (E)-4-[2-(7-meth-xy-2-2-d-methy-6-(3-methy-but-2-eny-)-2H-1-benz-pyran-5-y-)v-ny-]benzene-1- 2-dlol (compound 1) and (Z)-4-[2-(7-meth-xy-2-2-dimethy--6-(3-methy-but-2-eny-)-2H-1-benz-pyran-5-y-)v-ny-]ben- zene-l,2-dlol (compound 2) by spectroscopic methods, mainly by 1D-, 2D-NMR and MS spectra. Compounds 1 and 2 are two cls- and trans-lsomers and compound 2 is the flrst cis-stllbene isolated from Moraceous plants. 展开更多
关键词 Artocarpus chama artostilbenes A and B isoprenylated stilbene Moraceae.
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