Insecticidal activities of the leaves of nishinda (Vitex negundo L. Verbinaceae) against Tribolium castaneum Hbst.
Insecticidal activities of the leaves of nishinda (Vitex negundo L. Verbinaceae) against Tribolium castaneum Hbst.
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nishinda（Vitex negundo L. Verbinaceae）叶子对赤拟谷盗 Hbst 的杀虫活性。
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
M. Khalequzzaman
中科院分区：
文献类型：
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作者：
N. Chowdhury;W. Islam;M. Khalequzzaman
尼辛达、黄荆子对红粉甲的杀虫活性被调查过了。用有机溶剂石油醇、乙酸乙酯、丙酮、甲醇依次提取尼辛达叶。用残膜法测定了不同提取物对三株赤眼蜂成虫和不同龄期的杀灭效果。各提取物的LD50值不同，但对幼虫和成虫均表现出较高的毒性。在这些溶剂中，甲醇提取物对成虫和幼虫的毒性更大。不同溶剂的毒性大小依次为甲醇>、石油精>、丙酮>、乙酸乙酯。在这些菌株中，FSS-II对所研究的所有类型的提取物的敏感度最高。按昆虫品系的感病顺序为：FSSII>；CTC-12>；卡诺。
Insecticidal activities of nishinda, Vitex negundo L. on red flour beetle ( Tribolium castaneum Hbst.) was investigated. Nishinda leaves were sequentially extracted with organic solvents petrolium spirit, ethyl acetate, acetone and methanol. Efficacy of these extracts was determined against adults and different larval instars of three strains of T. castaneum using residual film method. The LD 50 values of the extracts were not similar but it showed higher degree of toxicity on both larval and adult insects. Among the solvents, methanolic extracts elucidated more toxicity on both adult and larval instars. The degree of toxicity according to solvents was methanol > petrolium spirit > acetone > ethylacetate. Among the strains, FSS-II showed the highest degree of susceptibility to all types of extracts studied. The susceptibility order according to insect strains was FSSII>CTC-12>KANO.