Effect of the aqueous extracts of the seeds of Talisia esculenta and Sapindus saponaria on fall armyworm

Brazilian Archives of Biology and Technology

Wander Laizo Dos Santos²  Maria Das Graças M. Freire¹  Paulo Cesar Bogorni¹  José Djair Vendramim¹  Maria Lígia R. Macedo² 

[1] ,Universidade Federal de Mato Grosso do Sul Departamento de Ciências Naturais Laboratório de Purificação de Proteínas e suas Funções BiológicasTrês Lagoas MS ,Brasil

关键词: Talisia esculenta;    Sapindus saponaria;    Sapindaceae;    Spodoptera frugiperda;    natural insecticide;   

DOI  :  10.1590/S1516-89132008000200018

来源: SciELO

【 摘 要 】

The effect of aqueous extracts of Talisia esculenta (T.E.) and Sapindus saponaria (S.S.), were evaluated on the development and mortality of 8-14th day-life Spodoptera frugiperda, an important pest of maize. Corn leaves were dipped in the aqueous extracts (1% w/v) and offered as food to the caterpillars. The treated corn leaves with the extracts caused larval mortality (26.71%/T.E.; 63.3%/S.S.) and also showed effect on the larval weight (237.50 mg/T.E.; 86.65 mg/S.S.) when compared with the control (11.3% and 293.45 mg), mortality and larval weight, respectively. The electrophoresis with gelatin (0.1%) showed two very clear white areas (trypsin activity) in the caterpillars midgut of all the treatments. Only the caterpillar treated with S. saponaria presented significant differences, showing trypsin activity (10.59%). Sapindus saponaria appeared better than Talisia esculenta and showed good potential to be used as control agent for S. frugiperda.

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