نتایج جستجو برای: plantago
تعداد نتایج: 2060 فیلتر نتایج به سال:
A mechanistic understanding of population dynamics requires close examination of species’ differences in how physiological traits interact with environmental variation and translate into demographic variation. We focused on two co-occurring winter annual species (Pectocarya recurvata and Plantago insularis) that differ in photosynthetic resource-use efficiency and demographic responses to envir...
A Mojave Desert shrub community was experimentally burned to understand changes in seed bank of desert annual plant species in response to wildfire. Seed mortality ranged from 55 to 80%, and fire caused significant losses of native and alien annual seeds. Schismus arabicus, Schismus barbatus, Bromus madritensis, Bromus tectorum, Erodium cicutarium and Plantago spp. made up >95% of the seed bank...
Genetic differentiation among plant populations and adaptation to local environmental conditions are well documented. However, few studies have examined the potential contribution of plant antagonists, such as insect herbivores and pathogens, to the pattern of local adaptation. Here, a reciprocal transplant experiment was set up at three sites across Europe using two common plant species, Holcu...
1. A glycoside of the aucubin type has been isolated in crystalline form from Plantago and Buddleia species, and has been shown to be identical with catalpol (Lunn, Edward & Edward, 1962). Catalpol has not been found in the free state before, but occurs as its p-hydroxybenzoyl ester, catalposide, in the genus Catalpa. 2. A second glycoside of this type has been obtained in crystalline form from...
مرحله جوانه زنی گیاهان یکی از مراحل مهم در طول دوره رشد آنها است که اغلب تحت تاثیر تنش های محیطی به ویژه شوری و خشکی قرار می گیرد. به منظور ارزیابی بررسی نقش موسیلاژ در مقاومت به خشکی دو گونه اسفرزه (forsk plantago ovata) و بارهنگ (plantago major l) در مرحله جوانه زنی، آزمایشی به صورت فاکتوریل در قالب طرح کاملا" تصادفی با چهار تکرار انجام شد. در این آزمایش فاکتور اول نوع گونه گیاهی در دو تیمار ...
In the present study we report the isolation of a phenylpropanoid glucoside, plantamajoside, together with rosmarinic acid, chlorogenic acid and luteolin-7-O-monoglucoside. This is the first report of these compounds from Plantago lagopus.
this study was conducted to investigate the effects of different temperatures on seed germination of plantago ovata and also to evaluate cardinal temperatures. various constant temperatures (5, 10, 15, 20, 25, 30 and 35ºc) were conducted in a completely randomized design with four replications. the germinated seeds were counted every day and the rate of germination percentage, cumulative germin...
A number of Plantago spp. especially P. major has long been used in the treatment of diseases such as infection, inflammation and cancer. In this study, we evaluated the immunomodulatory activities of five chemical classes of pure compounds obtained from the Plantago genus on human peripheral blood mononuclear cells (PBMC). Studies were conducted on lymphocyte transformation by BrdU immunoassay...
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