Release:Bulletin of Tyumen State University. Medico-Biological Sciences (№6). 2012
About the author:Sergey P. Vasfilov, Cand. Biol. Sci., Senior researcher of Botanical Garden, Ural Branch of the Russian Academy of Sciences (Ekaterinburg)
Abstract:Variability рН tissues, the contents of organic acids, sugars and starch in apical and basal parts of many ages needles from the top and bottom parts of crone pine during vegetation and in winter rest is investigated. It is shown, that рН needles tissues reflects the content in it of organic acids only during vegetation. Lower рН apical needles parts, in comparison with part basal, was accompanied by higher content in it of organic acids both during vegetation, and in winter rest. During vegetation more the difference рН between basal and apical needles parts corresponds more the difference of the content of sugars between these parts of needles.