تاثیر سطوح متفاوت نیترات محلول غذایی و اندازه ریشه بر عملکرد و کیفیت شیکون در سیکوره ویتلوف

چکیده:

Chicory (Cichorium intybus) is a perennial plants blong to the Asteraceae family and as a valuable crops its cultivation is incrasing. Given the harmful effects of high nitrate in vegetables, especially leaf vegetables on human health in recent years much attention has been subject to extensive research in this area is ongoing. Many leafy vegetables Such as lettuce, endive and Cabbage have high nitrates that are stored in their stems and petioles. Given that the edible part of Chicory were production dark environment using storage roots by applying nutrient solution containing nitrate use recently done. Tested in a randomized complete block design with three levels of nitrate ( 5,10,15 mM) and zero (control) with three different levels of root diameter on the shoulders of large roots (4 to 5 cm), moderate (3 to 4 cm), low (2 to 3 cm) in a factorial combination of agricultural research station khalat pushan, Faculty of Agriculture, Tabriz University, was conducted. After the forcing  period and the full development, manufacturing chicons isolated traits such as fresh weight, dry weight and appearance to chicons plus nitrate, total nitrogen and mineral elements (N, P, K) production chicons measure was. Based on the results of the these's tests it was found that large root with enough carbohydrate reserves cannot Inorganic nitrate into organic forms and has restored and thus preventing the accumulation of nitrate are produced chicons. The other results of these test the effect of nitrate levels and the size of the root dry weight was produced chicons. And considering that in the methods  hydroponically production chicons, achieving greater dry weight and increasing yield production chicon The other commercial is very important ,Can be used to obtain the more dry weight and increased performance from greater roots with appropriate levels of nitrate can be used. Regarding the effect of root size and nitrate on nitrate concentration of chicons as well as the results showed that That with increasing root size and nitrate levels the nitrate concentration chicons was also significantly increased so that the highest nitrate concentrations in large roots (diameter 4-5 cm shoulder) and 15 mM nitrate was obtained. Considering that density and number of branches chicons one of the most important factors of product quality and lower marketable yields And a much smaller number of branches chicons production quality and lower marketable yields also will be higher. Therefore the use of greater roots with appropriate levels of nitratecan cause elevated quality of production.