Effects of Melia azedarach L. and Peganum harmala L. extracts on nymphal and pupal developmental duration of Trialeurodes vaporariorum
Journal Title: Journal of Herbal Drugs - Year 2012, Vol 2, Issue 4
Abstract
Background & Aim: The plants of the greenhouse have been affected by infestation of the pest Trialeurodes vaporariorum, called greenhouse whitefly, which markedly reduced production. Synthetic insecticides have been widely developed and, their extensive use has brought about disadvantages, like environmental disturbance, pest resistance, lethal effects on non target organisms and toxicity to users and consumers. One alternative for control this invasive pest is the use of natural insecticides, active component isolated from the plants. Green insecticides tend to have broad spectrum activity relatively specific in their mode of action and easy to process and use. The effects of methanolic extracts of Melia azedarach L. and Peganum harmala L. on nymphal and pupal developmental duration of T. vaporariorum investigated under laboratory condition. Experimental: In both of the experiments, the leaf discs of bean plants with new hatched nymphs or pupae were placed into the round plastic petri-dishes (5 cm diameter) that filled with agar gel. The individuals of the nymph and pupa instars were treated with the concentration of M. azedarach and P. harmala extracts (80 mg/ml). In control group, water distilled was applied. Results & Discussion: The results indicate that the both methannolic extracts significantly increased nymphal developmental duration as compared to control. While, there was no significantly difference on pupal developmental duration in different treatments. The effect of plant extracts on nymphal developmental duration could be controlled on population dynamic of T. vaporariorum. Also, they could be delayed immature stages of greenhouse whitefly. Moreover, botanical pesticides appear to have potential as a good organic insecticide and provide for pest control an alternative to currently used pesticides.
Authors and Affiliations
Mahsa Dehghani; Kamal Ahmadi
Keywords
Related Articles
- EP ID EP23366
- DOI -
- Views 426
- Downloads 22
Effects of some channelling agents on the compaction properties of the mixed stem bark extracts of Anogeissus leiocarpus and Prosopis africana
Background & Aim: The hot water extract of a mixture of Anogeissus leiocarpus and Prosopis africana is widely used in the northern part of Nigeria for the treatment and management of asthma. Since investigations of it...
Effect of hydroalcoholic extract of Nigella sativa L. on the immune system and blood protein components in mice
Background: Black seed (Nigella sativa L.) in traditional medicine is well known that the chemical composition of the immune system with many applications in traditional medicine to fight the infection. This study invest...
Effect of Ferulago angulata sub. carduchorum on total serum antioxidant activity and some of the humoral immune responses in broiler chicks
Background & Aim: Ferulago angulata sub. carduchorum (locally name: Chavir or Chavil) is an important medicinal plant in Iran. The powder of aerial parts of this plant contains variety of components with different the...
Effects of biofertilizers on yield and essential oil of peppermint (Mentha piperita L.)
Background & Aim: Nowadays, tendency to agricultural biotic product sustainable agriculture instead of chemical fertilizers has been going up in all over the world. So, most pharmaceutical industries prefer to use raw...
The influence of reduced irrigation on herbage, essential oil yield and quality of Thymus vulgaris and Thymus daenensis
Background & Aim: Drought stress, as a main abiotic stress, has a significant influence on growth and metabolic activities of plant species. In this study, the influence of reduced irrigation on dry herbage, essential oi...