| Titre |
Ovicide and Larvicide Activities of the Essential Oils Extracted from Polyalthia longifolia and Clausena anisata on Sitotroga cerealella |
| Auteurs |
ADJALIAN Elvis [1],
ALITONOU GUY ALAIN [3],
NOUDOGBESSI Jean Pierre [4],
SESSOU PHILIPPE [2],
KOSSOU Dansou [5],
MENUT Chantal [6],
Sohounhloue Dominique [7],
|
| Journal: |
OnLine Journal of Biological Sciences |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0 |
| Volume Journal: |
17 |
| DOI: |
10.3844/ojbsci.2017.193.200 |
| Resume |
This work has objectives to study the chemical composition o
f
volatile extracts obtained from leaves of
Polyalthia longifolia
and
Clausena
anisata
and to evaluate their ovicide and larvicide effects by fumigation
against
Sitotroga cerealella
, as alternative to the pesticides of synthesis.
The analyses of the extracts by GC-MS showed that the essential o
il of
P.
longifolia
contains 57 compounds representing 86.1% of oil and 26
compounds corresponding to 97.3% of the essential oil of
C. anisata
. The
main compounds identified for the extract of
P. longifolia
are the β-
Caryophyllene (24.5%), Allo-Aromadendrene (13.5%), the α-Z
ingiberene
(9.4%), the α-Humulene (8.5%) and the α-Selinene (2.6%). Th
e extract of
C. anisata
mainly composed of methyl chavicol (69.9%) is characterized by
the presence of oxygenated monoterpens (1.4%), hydrogenated
monoterpens (7.8%), hydrogenated sesquiterpens (16.2%), oxy
genated
sesquiterpens (1.7%) and of aromatic compounds (69.9%). The b
iological
test results showed that the treatments by fumigation done w
ith the
essential oils reduce meaningfully (p<0.001) the bursting
of the ovums on
the paddy rice. The essential oil of
C. anisata
has completely inhibited the
viability of the larvas and the emergence of adult
butterflies from the dose
0.5 μl mL
−
1
contrary to
P. longifolia
that recorded respectively
10.0±0.3% and 50.0±0.2% at the strong dose 3 μl mL
−
1
. The study has,
otherwise, shown that the essential oils delayed th
e cycle of development
“ovums to adult” of
S. cerealella
(29.0±0.4 to 35.4±0.5 days) in relation
to the witness (25±0.1 days). The essential oil of
C. anisata
proved to be
more poisonous for the juvenile stages of
S. cerealella
. These results
provide the scientific basis for potential alternat
ives to the synthetic
fumigants in subsistence and commercial agriculture.
OnLine Journal of Biological Sciences Original Research Paper Ovicide and Larvicide Activities of the Essential Oils Extracted from Polyalthia longifolia and Clausena anisata on. Available from: https://www.researchgate.net/publication/320170491_OnLine_Journal_of_Biological_Sciences_Original_Research_Paper_Ovicide_and_Larvicide_Activities_of_the_Essential_Oils_Extracted_from_Polyalthia_longifolia_and_Clausena_anisata_on [accessed Jan 31 2018]. |
| Mots clés |
Polyalthia longifolia, Clausena Anisata, Ovicide, Larvicide,
S. Cerealella, Fumigation, Essential Oil |
| Pages |
193 - 200 |
| Fichier |
 (PDF) |