background & aim: aphids are of serious pests and vectors of multitude of viral diseases of field crops, vegetables, ‎and greenhouse crops. they have displayed a remarkable ability to establish resistance to ‎almost every insecticide with which it has been treated. to reduce the damage of these pests ‎and dependence on the sometimes unwise use of synthetic pesticides in crop and vegetable ‎...

In the present study, aqueous extract of eight plants, namely Azadirachta indica A. Juss, Melia azedarach Linn., Lantana camara L. Moldenke., Cannabis sativa Linn., Nerium indicum Mill., Eucalyptus sp., Ricinus communis Linn. and Solanum nigrum Linn. were tested for antifeedant and toxic effects against Pieris brassicae (Linn.). The ethanol extract of four potential plants were further tested f...

BACKGROUND AND AIMS Wood density is a key variable for understanding life history strategies in tropical trees. Differences in wood density and its radial variation were related to the shade-tolerance of six canopy tree species in seasonally dry tropical forest in Thailand. In addition, using tree ring measurements, the influence of tree size, age and annual increment on radial density gradient...

Purpose: To investigate the anti-urolithiatic activity of the aqueous and alcoholic extracts of Melia azedarach Linn leaves in calcium oxalate urolithiasis in male albino rats. Methods: The effect of oral administration of aqueous and ethanol extracts of Melia azedarach Linn leaves on calcium oxalate urolithiasis has been investigated. Lithiasis was induced by oral adminstration of ethylene gly...

Bioassay guided purification of the ethyl acetate extract of leaves of Melia azedarach led to the isolation of the limonoid 1-cinnamoyl-3,11-dihydroxymeliacarpin, which showed IC50 values of 6 microM and 20 microM for vesicular stomatitis (VSV) and herpes simplex (HSV-1) viruses, respectively. Its structure was established by spectroscopic methods.

Manganese (Mn) excess is a major abiotic stress for plant growth. In the present study, we investigated effects of Mn on photosynthesis in Ligustrum lucidum and Melia azedarach leaves using chlorophyll fluorescence transients. Both species were exposed to two concentrations (0.5 1 mmol) 10 30 d. Results showed that significantly inhibited photosynthesis. With increase concentration time, inhibi...

This study evaluates the effects of supercritical carbon dioxide extracts obtained from the fruit of Melia azedarach L. (Meliaceae) on the development of Spodoptera frugiperda J.E. Smith, 1797 (Lepidoptera: Noctuidae), from the larval period until the insect adulthood. For this purpose, a laboratory-scale extraction unit was operated at 60 °C and 200 bar. Larval mortality increased by raising t...