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Activity of Ricinus
communis (Euphorbiaceae) against Spodoptera
frugiperda (Lepidoptera: Noctuidae)
M. A. Ramos-López1*,
S. Perez-G1, C. Rodríguez-Hernández2,
P. Guevara-Fefer3 and Miguel A. Zavala-Sánchez1
1Universidad
Autónoma Metropolitana-Xochimilco. Calzada del Hueso 1100,
Col. Villa Quietud, México, D.F., CP. 04960.
2Colegio
de Postgraduados en Ciencias Agrícolas, Campus Montecillos
Km 36.5 Carretera México-Texcoco, Texcoco, Edo. Mex, CP
56230.
3Universidad
Nacional Autónoma de México, Universidad 3000, Circuito
Exterior s/n, Ciudad Universitaria, México, D. F., CP 04510.
*Corresponding author. E-mail:
agromyke@yahoo.com.
Tel/ Fax: +52 (55) 54 83 74 10.
Abbreviations: MeOH,
Methanol; Hx, hexane; AcoEt, ethylacetate;
Sd, seed extract; Lf, leaf extract; LVC50,
half maximum larvae viability concentration; ANOVA,
analysis of variance.
Accepted
19 January, 2010 |
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One of the
most studied plant species with insecticidal properties is
the castor bean Ricinus communis. However, its
activity against Spodoptera frugiperda is unclear.
Therefore, to determinate the
insecticidal and insectistatic activities of methanol,
hexane and ethyl acetate extracts of the seeds and leaves of
R. communis, castor oil and ricinine were
tested at different concentrations against S. frugiperda.
This study demonstrated for the first time, that the castor
oil and ricinine are active ingredients of
R. communis
that acts against S. frugiperda and that each of the
seed extracts exhibited better insecticidal and
insectistatic activity than the leaf extracts.
The half maximum
larvae viability concentration (LVC50) were
0.38 × 103 mg ml-1 for the ricinine,
0.75 × 103 mg ml-1 for a methanol
extract of seeds, 1.97 × 103 mg ml-1
for an ethyl acetate seed extract, 2.69×103 mg ml-1
for the castor oil, 4.83 × 103 mg ml-1
for a methanol extract of leaves, 5.07 × 103 mg
ml-1 for an ethyl acetate extract of leaves, 9.95
× 103 mg ml-1 for a hexane extract of
seeds and 10.01 × 103 mg ml-1 for a
hexane extract of leaves.
Key
words:
Ricinus communis, Spodoptera frugiperda,
insecticidal, insectistatic, castor oil, ricinine. |
