A soil-active herbicide (hexazinone) was applied (0, 2, and 4 kg/ha of active ingredient) in a 3-year-old regenerating boreal Populus tremuloides Michx. (aspen) clearcut to determine its effect on the compositional and structural development of the vegetation. Woody stem densities and plant foliar cover were evaluated prior to and 2, 6, and 17 years after treatment. Herbicide treatment at the 2...

The Effect of Spray Solution Nutrition Elements on the amount Macro Healthy and Drought Oak Trees (Quercus brantii Lindl.) in Monj Region Chaharmahal Bakhtiari Province

coumarins are bioactive secondary metabolites and could be found in the fruits of umbelliferae. prangos asperula boiss. is an iranian native plant which is found wild in many regions of iran. osthol, a prenylated coumarin, was isolated from the hexane extract of the fruits of p. asperula and its structure was elucidated using 1 hnmr, 13 cnmr, ir and ms spectra. the essential oil of the aerial p...

dendrobium genus was reported to contain alkaloid, bibenzyl, fluorenone, phenanthrene, sesquiterpenoid, and phenolic acid, which have biological properties. our aim was to investigate the protective effect of an aqueous extract of dendrobium nobile lindl (dne) against cisplatin-induced acute kidney injury (aki). quantification of four phenolic acids (4-hydroxybenzoic, vanillic, syringic, and fe...

The Influence of Competition on some Structural Features Persian Oak (Quercus brantii Lindl var.persica) Trees in Zagros Forest (Case study:Hashtad- Pahlu,Lorestan)

In vitro asymbiotic seed germination of Dendrobium chrysotoxum varied with fruit harvesting time and culture medium used for germinating seeds. Seeds at different developmental stages were harvested and cultured on five asymbiotic orchid seed germination media i.e. defined and undefined media, namely 1⁄2 MS, KC, M, MS and PDA. Seeds harvested 220 days after pollination showed maximum germinatio...