The variability of Gentiana pneumonanthe L. subpopulations in different habitat conditions
نویسندگان
چکیده
منابع مشابه
Somatic Embryogenesis in Gentiana Pneumonanthe L
A method for micropropagation of the protected species Gentiana pneumonanthe L. by somatic embryogenesis (SE) was elaborated. For SE induction, secondary explants of leaves and apical meristems from in vitro cultures were successfully used. Tests of callus induction were carried out on ten media containing BA (0.04-8.0 μM) and Picloram or 2,4-D (4.0–8.0 μM). The greatest amounts of embryogenic ...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
Secoiridoid glycosides production in hairy roots of Gentiana pneumonanthe L.: optimization of cytokinin concentration in the culture medium
Gentiana pneumonanthe L. (fam. Gentianaceae) is a herbaceous perennial growing on wet heathlands, grasslands and hay meadows of Europe and Asia. Like other Gentiana species, G. pneumonanthe is characterized by the production of bitter secoiridoid glycosides (SGs) widely used in the pharmaceutical industry. Hairy roots (HRs) of G. pneumonanthe, as an alternative source of these phytochemicals, h...
متن کاملthe role of application of dynamic assessment approach in improvement of iranian efl writing performance at different language proficiency levels
the present study sought to investigate the role of dynamic assessment (da) in improvement of iranian efl writing performance at different language proficiency levels. to this end, after conducting the quick placement test, 60 iranian efl learners were assigned to two groups with different language proficiency levels. in both groups each participant wrote two compositions, one before and one af...
the effect of task cognitive complexity and time limit on the performance of the learners with different proficiency levels in second language writing skill
this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Ecological Questions
سال: 2016
ISSN: 1644-7298
DOI: 10.12775/eq.2016.005