Abstract
Pistachio is the most important nut that is produced in Iran. Little research has been done to examine the effect of UCB1-hybride rootstock plants as tissue culture for pistachios (2011 in Toba company).This study aims to evaluate three pistachio varieties on UCB1 hybrid rootstock. The experiment was conducted as a randomized complete block design with three treatment groups (including Ohadi, Akbari and Ahmadaghaii) in three replications in Mahan, Kerman. The results showed that the three treatment groups were affecting in terms of diameter of the top part of the graft, the branch length, and graft height and leaf area. In addition, phosphorus, potassium, calcium and magnesium concentrations were measured. Akbari showed better result. The rootstock affected the amount of nutrients absorbed in the three treatment groups. The Ahmadaghai cultivar had the highest compatibility to rootstock because of high concentration of elements. The Akbari cultivar had the lowest compatibility to the UCB1 hybrid rootstock. Correlation analysis revealed that correlation coefficients between the traits were significant. The leaf calcium percentage was correlated to the branch diameter. I On the other hand; increasing the amount of leaf calcium caused an increase in the branch diameter. Stem diameter increased the number of branches and tree canopy.
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