M. Abdullah, A. Pk, Dkma Saleh, A. R. Khan, N. Islam
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引用次数: 6
Abstract
The insecticidal and repellent activity tests of the chloroform extracts of fruit, leaf, root and stem of Urena sinuata L. against the red flour beetle Tribolium castaneum L. adults have been conducted. The leaf, root and stem extracts showed high toxicity by giving mortality of the beetles within 30 min. of exposure. The LD 50 values for the 12, 24, 36 and 48h of exposures were 0.354, 0.262, 0.209 and 0.196mg cm 2 for the fruit extract; 0.587, 0.413, 0.355 and 0.299mg cm 2 for the leaf extract; 0.440, 0.389, 0.340 and 0.268mg cm 2 for the root extract and 0.968, 0.661, 0.491 and 0.362mg cm 2 for the stem extract. The insecticidal activity can be arranged in the order of fruit> root> leaf> stem extracts. The root and stem showed repellent activity against T. castaneum adults at P<0.01 and P<0.05 levels of significance, while the fruit and the leaf extracts did not show repellency at all. DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10740 Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp. 25-28
研究了水莲果、叶、根、茎氯仿提取物对红粉甲虫成虫的杀避活性。叶、根、茎提取物具有较高的毒性，暴露30分钟内可致甲虫死亡。果实提取物在12、24、36和48h的ld50值分别为0.354、0.262、0.209和0.196mg cm 2;叶提取物为0.587、0.413、0.355、0.299mg cm 2;根提取物分别为0.440、0.389、0.340、0.268mg cm 2，茎提取物分别为0.968、0.661、0.491、0.362mg cm 2。杀虫活性排序为果实>根>叶>茎提取物。根和茎对木栗成虫的驱避活性分别达到P<0.01和P<0.05显著水平，果实和叶提取物对木栗成虫无驱避作用。DOI: http://dx.doi.org/10.3329/ujzru.v30i0.10740 Univ. j. zool。Rajshahi university . Vol. 30, 2011 pp. 25-28
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