|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5769459||1413240||2018||10 صفحه PDF||ندارد||دانلود کنید|
â¢Grapevines were grown at increasing rate of Cu (0â300Â ppm) and P (0â100Â ppm).â¢Shoot growth and plant biomass declined with the increase of soil Cu concentration.â¢The application of P enhanced plant growth and nutritional status.â¢Phosphorous stimulated root length, diameter and the number of apex.â¢Root citric acid increased in Cu300, while ascorbic acid decreased in Cu 200 and 300.
The aim of the present study was to evaluate the effectiveness of P soil addition to mitigate the toxic effect of excess of Cu on grapevine on sandy non-calcareous soil.Micro-propagated plants of 1103 Paulsen rootstock were grown according to a factorial experimental design with two factors: Cu addition (0, 100, 200 and 300Â mgÂ kgâ1Â dw) and P addition (0, 50 and 100Â mgÂ kgâ1 soil dw). The experiment was conducted in the greenhouse and plants were grown on a sandy soil in rhizoboxes. At the end of the trial, plants were destructively harvested, the biomass and the nutrient concentration of organs were determined. Root growth was evaluated during the trial and the concentration of organic acid in root tissue and exudates was determined.Shoot length and plant biomass declined as Cu concentration in soil increased; the application of P enhanced plant growth and nutritional status. Root biomass decreased at CuÂ >Â 100Â mgÂ kgâ1 and increased in P at 100Â mgÂ kgâ1. Phosphorous stimulated root length, diameter and the number of apexes. Root citric acid increased as a response of Cu at 300Â mgÂ kgâ1, root ascorbic acid decreased with the increase of Cu (200 and 300Â mgÂ kgâ1) and P at 100Â mgÂ kgâ1. The concentration of citric acid from root exudations was higher in Cu at 300Â mgÂ kgâ1 and Cu at 200Â mgÂ kgâ1 (compared to control) and P at 100Â mgÂ kgâ1 soils.The application of P fertilization seems to be a valuable strategy to overcome the toxicity of high concentration of Cu in soil.
Journal: Scientia Horticulturae - Volume 227, 3 January 2018, Pages 102-111