Effect of ethanolic extract of Melia azedarach L. seeds on oviposition and egg hatching of Tetranychus urticae (Acari: Tetranychidae)
Journal Title: Journal of Herbal Drugs - Year 2011, Vol 2, Issue 3
Abstract
Background & Aim: Tetranychus urticae Koch is one of the most important pests of crops, ornamental and greenhouse plants in the world and, can damage to 900 plant species. Resistances to pesticides and acaricides have guided researches to introduce new methods to control T. urticae. Botanical pesticides are an important group of natural productions that are usually safer than conventional pesticides for humans and the environment. Extracts of genus Melia have insecticidal and anti-nutritional effects. The effect of ethanolic extracts of M. azedarach seeds on eggs hatching (hatching time & hatching rate) and egg-laying of T. urticae were investigated under laboratory conditions. Experimental: Treatments included the ethanolic plant extract (36 mg/ml) and control (ethanol 95%). The sub-lethal effect of the plant extracts was determined using a spraying bioassay. Results & Discussion: The duration of egg stage of T. urticae after exposing to plant extracts were significantly longer than control treatment with a mean±SE of 5.24±0.05 and 4.85±0.04 days, respectively. In control treatment, hatching rate of the spider mite eggs was significantly more than in plant extract treatment. The ethanolic plant extracts had significant deleterious effects on the oviposition behavior of the spider mite. So that, during four days of the experiment, the mean±SE of total oviposition of the mites was 2.95±0.65 and 12.17±1.33 in plant extract and control treatments, respectively. Industrial and practical recommendations: According to this result, substituting conventional pesticides with ethanolic seed extract of M. azedarach can be useful. However, formulating the plant extract is essential for commercial use of the acaricidal extracts. Therefore, it needs more scientific studies levels.
Authors and Affiliations
Mahla Ashrafju; Kamal Ahmadi; Haji Mohammad Taklloozadeh; Yekta Baniadami; Azita Nazarian
Keywords
Related Articles
- EP ID EP23356
- DOI -
- Views 393
- Downloads 25
Screening of the profiles of the essential oils from the aerial parts of Nepeta racemosa using classical and microwave-based methods: Comparison with the volatiles using headspace solid-phase micro-extraction
Background & Aim: Nepeta racemosa is an herbal and medicinal plant and this report aims to identify chemical compositions of the essential oils and volatiles of its aerial parts through classical and advanced methods....
Identification of phytochemicals, plant compounds Smirnovia iranica.
Background & Aim: Fabaceae plant family cow tail (Smirnovia iranica) is one of the valuable species of native shrubs and sand dunes in the central region of Iran which is consistent with the production of forage and soil...
Evaluation of ecotype and chemotype diversity of Thymus daenensis Celak. on Isfahan and Chaharmahal va Bakhtiari provinces
Background & Aim: Thymus daenensis Celak. is one of the herbal and perennial medicinal plants belonging to Lamiaceae which grows widely in Isfahan and Chaharmahal va Bakhtiari provinces. All of its floral on aerial part...
Effect of foliar application of Jasmonic Acid (JA) on essential oil yield and its compositions of Thymus daenensis Celak
Background & aim: Recent researches have been done on effects of plant growth regulators (PGR) on growth and production of different crops whose results indicate the effectiveness of most of these hormones on qualitative...
Studies on Ethnobotany of important medicinal plants in Sistan
Background & Aim: Medicinal plants, Since time immemorial, have been used in virtually all cultures as a source of medicine and ethnobotany has prevent to be a valuable method to find new herbal medicine and plant derive...