Data/hora: 09/06/2024 05:21:28

Provedor de dados: | 115
País: | Mexico
Título: | Growth inhibitory effect of extracts from Reynoutria sp. plants against Spodoptera littoralis larvae
Autores: | Pavela,Roman; Vrchotová,Nadezda; Šerá,Bozena.
Data: | 2008-08-01
Ano: | 2008
Palavras-chave: | Reynoutria; Spodoptera littoralis; Growth inhibition; Botanical insecticides; Toxicity test; Plant extracts.
Resumo: | Laboratory studies were conducted to determine the effects of methanolic extracts from three Reynoutria species on feeding, development and mortality of larvae S. littoralis. The extracts of all three Reynoutria species did not reveal feeding deterrence in the Spodoptera littoralis larvae. However they significantly decreased the larvae growth and the efficiency of conversion of the ingested and digested food. Conversion of the ingested food was lower, when compared with control larvae. The use of food provoked prolongation of the larvae development and chronic toxicity. Even if extracts of all three plant species were effecting the larvae mortality with the same results (LC50 ranged from 0.5 to 1 mg g-1 in all extracts), the impact on growth inhibition in the larvae varied. The most efficient extract was R.xbohemica interspecific hybrid (LC50 was 1.24 mg g-1), then the extract of R. japonica (LC50 of 6.72 mg g-1), and the least efficient was the R. sachaliensis extract (LC50 of 9.48 mg g-1).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000500009
Editor: | Colegio de Postgraduados
Formato: | text/html
Fonte: | Agrociencia  v.42 n.5 2008
Fonte: | info:eu-repo/semantics/openAccess