تاثير نوع پايه بر ميزان كلروفيل و غلظت عناصر معدني برگ اورلاندو تانجلو

Effect of different citrus rootstocks on Orlando Tangelo leaf chlorophyll content and mineral element concentrations

In this study, the effect of four citrus rootstocks {sour orange {Citrus aurantium), Bakraeii (C. reticulata x C. aurantium, Mexican lime (C aurantifolia) and Volkamerlemon (C. volkameriana)} on Orlando Tangelo leaf chlorophyll content and mineral element concentrations (N, P, K, Ca, Na, Mg, Fe, Zn, Mn, CI, Cu, and B) have been evaluated in completely randomized design with four replications. Budded Orlando Tangelo on above rootstocks were grown in pots containing calcareous soil (pH=8.2) in greenhouse. Results showed that rootstocks had significant effect on leaf chlorophyll content. Highest chlorophyll content was on sour orange rootstock. Rootstock types had significant effect on leaf mineral concentrations except of Ca, Mg, Cu and B. Leaf N and Ca concentrations on all rootstocks and Mn only on Mexican lime rootstock was lower than optimum range. Leaf CI and Cu concentrations was higher than optimum range on all rootstocks. Scions on sour orange had highest CI concentration and Na concentration was the highest on Volkamer lemon rootstock.