EFFICIENCY OF ORIGANUM MAJORANA ESSENTIAL OIL AS INSECTICIDAL AGENT AGAINST RHYNCHOPHORUS FERRUGINEUS THE RED PALM WEEVIL (OLIVIER) (COLEOPTERA: CURCULIONIDAE)
H Y1, Mady; Ahmed, Maha; A H2, El Namaky;
Abstract
Rhynchophorus ferrugineus is the most dangerous palm pest in Egypt and the Middle East.
A lot of efforts have been made since three decades up to date to solve this problem. In this
study, the essential oil of Origanum majorana was tested in vitro against larvae, pupa and
adult stages of R. ferrugineus. In addition, the chemical composition of the essential oil was
elucidated by gas chromatography and mass spectrometry (GC-MS) analysis. Two main
toxic components (benzonitrile, 2-hydroxy 23.67%and L-linalool16.32%) were found. A
significant mortalities were achieved after exposure to three concentrations (5, 10 and 15%)
of O. majorana oil. Each concentration contains five replicates with 5 larva, pupa or adult
for each replicate. The effect reached 50% for 10% concentration at 96 hrs, 48 hrs and 12 hrs
for larva, pupa and adult, respectively. In addition, the cuticle of treated larvae was
investigated histopathologically, and corrugation and a thinning surface were found. These
results suggest that O. majorana essential oil is a promising alternative to chemical
pesticides and can be used as a biopesticide against larvae, pupa and adult of R. ferrugineus.
A lot of efforts have been made since three decades up to date to solve this problem. In this
study, the essential oil of Origanum majorana was tested in vitro against larvae, pupa and
adult stages of R. ferrugineus. In addition, the chemical composition of the essential oil was
elucidated by gas chromatography and mass spectrometry (GC-MS) analysis. Two main
toxic components (benzonitrile, 2-hydroxy 23.67%and L-linalool16.32%) were found. A
significant mortalities were achieved after exposure to three concentrations (5, 10 and 15%)
of O. majorana oil. Each concentration contains five replicates with 5 larva, pupa or adult
for each replicate. The effect reached 50% for 10% concentration at 96 hrs, 48 hrs and 12 hrs
for larva, pupa and adult, respectively. In addition, the cuticle of treated larvae was
investigated histopathologically, and corrugation and a thinning surface were found. These
results suggest that O. majorana essential oil is a promising alternative to chemical
pesticides and can be used as a biopesticide against larvae, pupa and adult of R. ferrugineus.
Other data
| Title | EFFICIENCY OF ORIGANUM MAJORANA ESSENTIAL OIL AS INSECTICIDAL AGENT AGAINST RHYNCHOPHORUS FERRUGINEUS THE RED PALM WEEVIL (OLIVIER) (COLEOPTERA: CURCULIONIDAE) | Authors | H Y1, Mady; Ahmed, Maha ; A H2, El Namaky | Issue Date | 2021 | Journal | Journal of Biopesticides | Volume | 14 | Issue | 1 | Start page | 32 | End page | 40 | ISSN | 0974391X 22308385 |
DOI | 10.57182/jbiopestic.14.1.32-40 |
Attached Files
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| Efficiency of Origanum majorana essential oil.pdf | 788.87 kB | Adobe PDF | Request a copy |
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