Fahimeh Mohammadpour; Farhad Ghasemi Aghbash; Mehrdad Zarafshar; Ehsan Ghanbary
Abstract
The purpose of the current study was to investigate the effect of carbon nanotubes on morphological traits of two wild pistachio species and compare them with common treatments including cold and acid sulfuric 65% in a completely randomized design with eight treatments and 10 replicates. The results ...
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The purpose of the current study was to investigate the effect of carbon nanotubes on morphological traits of two wild pistachio species and compare them with common treatments including cold and acid sulfuric 65% in a completely randomized design with eight treatments and 10 replicates. The results showed that application of carbon nanotubes with concentrations of 25 and 75 mg / L significantly improved the morphological and biomass traits of the two species of wild pistachio including (Pistacia atlantica Desf ) and (P. khinjuk Stocks) in comparison with the acid and cold treatments. The highest increase in root, stem height and collar diameter was observed in the 25 mg / L treatment. The highest root length and dry and fresh root biomass were observed in Khinjuk under 75 mg/L nano carbon treatment. The highest concentration of leaf magnesium was observed in P. atlantica after 10 and in P. Khinjuk after 100 mg/L treatments. The phosphorus content in leaves of the two wild pistachio species was stable under the all treatments. The leaf potassium in P. atlantica was the highest under 10, 25, and 50 mg/L treatment and it was the highest in leaves of P. Khinjuk under 75 mg/L treatment. Although the current research proved the positive impacts of carbon nanotubes on growth of the wild Pistachio species, the further research can be suggested to find strategies for enhancing the growth of wild pistachio species to commercialize the products of these valuable species.
Peyman Ashkavand; Masoud Tabari koucheksraei; Mehrdad Zarafshar; Ehsan Ghanbary
Abstract
In order to assess the impact of silicon nanoparticles in improving the growth and physiology characteristics of mahaleb cherry (Prunus mahaleb L.) seedlings a completely randomized experimental design was carried with 4 treatments and 3 replications (each replicate with 9 seedlings). Irrigation treatments ...
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In order to assess the impact of silicon nanoparticles in improving the growth and physiology characteristics of mahaleb cherry (Prunus mahaleb L.) seedlings a completely randomized experimental design was carried with 4 treatments and 3 replications (each replicate with 9 seedlings). Irrigation treatments included concentrations of 10, 50 and 100 mgr/L of silicon nanoparticles and control with tap water which was irrigated every three days based on field capacity. At all concentrations of silicon nanoparticls with increasing silicon nanoparticles concentration the rates of photosynthesis, stomatal conductance and transpiration increased. With increasing silicon nanoparticle concentration water potential of mahaleb seedlings was decreased (more negative), but the relative water content of leaves did not differ among treatments. Although, with increasing silicon nanoparticles, collar diameter and height growth did not differ, however, other growth parameters were increased. In general, it can be stated that in this study the use of silicon nanoparticles, especially at concentrations of 50 and 100 mgr/L growth and physiological activities of mahaleb seedlings were improved.
