ethylene as a plant hormone plays various functions in a variety of physiological phenomena including seed germination, root initiation on stem cutting, senescence and organs abscission. in our previous investigation, five rose genotypes were identified showing high-sensitivity or low-sensitivity to exogenous ethylene treatment. the purpose of this study was to evaluate the rooting capacity and...

Suffixation influences lexical stress in one of three ways. A suffix attached to a word root/stem may take the itself, or it cause move from where was uninflected stem another syllable, keep as is. Stress misassignment is very common speech Arabic-speaking English foreign language (EFL) learners. This study conducted investigate how EFL learners at Prince Sattam bin Abdulaziz University (PSAU) ...

this experiment was carried out in the agricultural faculty of guilan university. the factorial experiment was performed based on a completely randomized design of three replications. the experimental factors comprised of: lillium cultivars, navona (asiatic) and fangio (la), four levels of calcium nitrate (0, 1, 1.5 and 2 mm) in combination with three levels of iba (500, 750 and 1000 ppm) . the...

Background: Trigonella foenum-graecum L. commonly known as fenugreek is a rich source of important medicinal metabolite, i.e. trigonelline. Objective: In this study, hairy roots culture as a novel method for trigonelline production was evaluated. Methods: For optimizing the hairy roots culture of Trigonella foenum-graecum, three strains of Agrobacterium rhyzogenes (ATCC15834, MSU440 and K...

Carbon (C) availability plays an essential role in tree growth and wood formation. We evaluated the hypothesis that a decrease in C availability (i) triggers mobilization of C reserves in the coarse roots of Picea abies to maintain growth and (ii) causes modification of wood structure notably under drought. The 6-year-old saplings were subjected to two levels of soil moisture (watered versus dr...

introduction: during the last decade, advances in tissue engineering and stem cell-based tooth regeneration have provided realistic and attractive means of replacing lost or damaged teeth. the first adult stem cells isolated from dental tissues were dental pulp stem cells (dpscs). when transplanted with hydroxyl apatite/tri calcium phosphate (ha/tcp) powder, they formed a dentin-like structure ...

Erigeron karvinskianus, a small herb, belonging to the family Asteraceae, was identified by Botanical Survey of India, Shillong, Meghalaya. The plant parts such as stem, roots and leaves were dried, powdered subjected Soxhlet extraction with various solvents based on its polarity. Phytochemical screening methanolic aqueous extract detected presence alkaloids, flavonoids, phenolic compounds tann...

Pea seeds were swollen in solutions with different concentrations of cytokinin benzyladenine (BA). As compared with controls, a low concentration of BA (0.05 mg/l) did not affect the growth of stems and roots of twelve-day-old seedlings but concentrations of 0.20–4.00 mg/l showed an inhibiting effect; this inhibition was proportional to the concentration of BA. In controls the ratio between the...

background: periodontal ligament stem cells (pdlscs) are considered as a type of mesenchymal stem cell that is beneficial target for numerous clinical applications in periodontal tissue regeneration therapy. materials and methods: this study examined the effects of dexamethasone (dex) on human pdlscs in vitro. pdlscs obtained from the roots of patient’s teeth were cultured with dex (0.01 μm), a...