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EVALUATION OF BORON TOXICITY IN FIG (Ficus carica L.) CULTIVARS

Published in AgroLife Scientific Journal, Volume 3, Number 1
Written by Mustafa Ali KAPTAN, Mehmet AYDIN, Zeynel DALKILIÇ

This research was carried out to investigate the differential responses of nine different fig cultivars against the boron toxicity and the effects of boron toxicity on dry matter yield, morphological properties and plant boron concentrations. A pot experiment was designed (perlite+sand mixture, 1:1) with two levels of boron (normal 0.46; high 8 mg B l-1) and nine different fig cultivars (Ficus carica L. Akçakum, Bardakçı, Göklop, Halebi, Koca ana, Mor incir, Morgöz, Sarılop and Siyahkuş) under the controlled conditions. All of the fig cultivars showed different response against boron toxicity. Boron concentrations in all of the leaf parts increased significantly by increasing the B supply. Leaf tips were the dominant sites of B accumulation compared to the other leaf parts. The toxic level of boron application leads to significant reduction on plant height, internodal length, leaf numbers, shoot diameter and total dry matter while it decreased root length. The highest reduction was obtained by the total dry matter and it was followed by internodal length, leaf numbers and shoot diameter respectively. In terms of dry matter yield and plant height, among the cultivars, Bardakçı cv. was affected the least from the boron toxicity.

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