How climate-change induced environmental stress may alter the effects of inbreeding in patchy populations of rare species is poorly understood. We investigated the fitness of progeny from experimental self- and cross-pollinations in eight populations of different size of Echium wildpretii, a rare endemic plant of the arid subalpine zone of the Canarian island of Tenerife. As control treatments ...

Nuclear crystalloids have been found in sieve elements of several Boraginaceae. Nuclei of differentiating sieve elements of Echium and other genera except Amsinckia contain one or more crystalloids composed of thin rods densely packed in parallel arrangement. After the nuclei disintegrate in the maturing sieve element the crystalloids are released into the cell lumen where they persist intact. ...

OBJECTIVE This review focuses on the medicinal plants growing and having history of folk medicine in Iran and found effective as anti free radical damage in animal or human. DESIGN Embase, Scopus, Pubmed, Web of Science, Google Scholar, IranMedex, and SID databases were searched up to 2 February 2008. The search terms were antioxidant or "lipid peroxidation" and "plant, medicinal plant, herb,...

Background & Aim: Echium amoenum is most commonly used herb after tea with high nutritional values. The purpose of this research was to produce Echium amoenum herbal tea, enriched by Malva and Althaea rosea var. nigra, in order to enhance the sensory properties and antioxidant activity of herbal tea. Experimental: In th...

Abstract Light is considered a factor that influences the seed germination of many weed species, and it can signal whether environmental conditions are favorable or not for germination. We aimed to study if there an influence light quality dormancy overcoming in Echium plantagineum L. carried out 2 x 6 factorial experiment, with without potassium nitrate followed by immersion gibberellic acid; ...

Thallium is one of the most toxic elements, without known biological function in living beings. While contents of other heavy metals like Cd, Hg and Pb are subject to strict limitations in foodstuffs and medicinal plants, and concentrations are routinely checked, in the case of Tl there are no regulations in prime matters intended for phytomedicines, and its monitorization is not performed. The...

Changes in vegetation from 1990 to 2000 were examined at 10 high country localities, representing four grassland types: fescue tussock (Festuca novae-zelandiae), snow tussock (Chionochloa rigida), red tussock (C. rubra), and silver tussock (Poa cita). At each locality, three treatments were established: ambient sheep+rabbit grazing, rabbit grazing only, and no grazing. The mutivariate methods o...