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حرية الوصول المقاله
1 - Evaluation of the Tolerance of Four Pistachio Rootstocks to Salinity Stress Based on Morphological, Physiological and Biochemical Parameters
Samanah Hakimnejad Hamid reza Karimi Seyyed Rasoul Sahhafi Majid Esmaeilizadeh(new)In order to evaluation of the tolerance of four pistachio rootstocks to salinity stress an experiment was performed as factorial in framework completely randomized design with four replications. Factors included rootstocks (‘Badami-e- Riz-e-Zarand’, ‘G أکثرIn order to evaluation of the tolerance of four pistachio rootstocks to salinity stress an experiment was performed as factorial in framework completely randomized design with four replications. Factors included rootstocks (‘Badami-e- Riz-e-Zarand’, ‘Ghazvini’, ‘Akbari’ and UCB-1) in four levels and salinity (0, 75 and 150 mM) in three levels. Results showed that rootstocks had different responses to salinity. The highest specific leaf weight and chlorophyll fluorescence parameter (Fv/Fm) were observed in ‘Badami-e- Riz-e-Zarand’ and ‘Ghazvini’ rootstocks. Also, potassium and calcium concentration of shoot in ‘Badami-e- Riz-e-Zarand’, ‘Ghazvini’ and, ‘Akbari’ rootstocks were higher compared to UCB-1. The UCB-1 rootstock had higher leaf area, relative water content (RWC) and chlorophyll-a content than the other rootstocks. The results of cluster analysis showed that salinity changed the position of the ‘Akbari’ and UCB-1 rootstocks in cluster whereas the position of ‘Badami-e- Riz-e-Zarand’ and ‘Ghazvini’ rootstocks unchanged in cluster. تفاصيل المقالة -
حرية الوصول المقاله
2 - The Evaluation of the Effect of Multiwall Carbon Nano Tube (MWCNT) on In Vitro Proliferation and Shoot Tip Necrosis of Pistachio Rootstock UCB-1 (Pistacia integrima × P. atlantica)
Shahrzad Aghasi Kermani Hossein Hokmabadi Marzieh Ghanbari JahromiUCB-1 (Pistacia atlantica × P. integrima) is a commercial rootstock for pistachio in some pistachio plantations across the world. This rootstock is very new in Iran and recently, it has been used commercially in some plantations due to its high growth. Propagation أکثرUCB-1 (Pistacia atlantica × P. integrima) is a commercial rootstock for pistachio in some pistachio plantations across the world. This rootstock is very new in Iran and recently, it has been used commercially in some plantations due to its high growth. Propagation of this rootstock by tissue culture results in many limitations such as shoot tip necrosis (STN) and a low proliferation rate. Therefore, any process that leads to improve the proliferation rate and feature will be used in commercial propagation of this rootstock. Nanotubes are widely used in in vitro cultures. For this reason, we used different concentrations of carbon nanotubes (0, 50, 100, 150, 200 µg/l) and benzyladenine (0, 0.5, 1, 1.5 and 2 mg/l) to improve the proliferation rate and qualitative indices. The results showed that using carbon nanotubes concentration of 200 µg/l with 2mg/l of benzyladenine (BA) led to maximum proliferation (4 microshoots per explant), maximum shoot length (3.68 cm) and minimum STN (8%) and vitrification (this isn’t a word?) (0 %) percentage. تفاصيل المقالة -
حرية الوصول المقاله
3 - Evaluation of Freezing Damage in some Pistachio Seedling Rootstocks
Maryam Afrousheh Hossein Hokmabadi Hasan Arab Ali TajabadipourA greenhouse experiment was conducted to evaluate the freezing damage in some pistachio rootstocks by ion leakage and pH changes of leaked solution. A factorial experiment was carried out in randomized block designs (RBD) with three factors: Temperature (A) including 4 أکثرA greenhouse experiment was conducted to evaluate the freezing damage in some pistachio rootstocks by ion leakage and pH changes of leaked solution. A factorial experiment was carried out in randomized block designs (RBD) with three factors: Temperature (A) including 4 ̊C, 0 ̊C, -2 ̊C, -4 ̊C, -6 ̊C, Time (B) including 3, 12, 24h , and Rootstock (C) including P. vera cv 'Badami Zarand' (V13) and 'Sarakhs' (S5), P. mutica (M1)and P. atlantica (A7). For this, one-year-old seedlings were kept at these five temperatures in incubator for 2 hours. Then in the first 24 hours in three hour intervals and during four days, EC and pH in leaked solution were measured daily. After four days the seedling samples were autoclaved at temperatures 105°C for 4 minutes to destroy all cell membrane. EC and pH of remaining solution were measured again and the percentage of ionic leakage was calculated. The results showed that the best time to evaluate the pH and ionic leakage was 24 hours after incubation of samples. Based on the results, ionic leakage dramatically increased with decreasing temperatures from 0°C to -6°C, while pH of leaked solution had no significant difference in 0°C and 4°C temperature treatments. When temperature reduced from 0°C to -6°C, like ionic leakage, pH greatly reduced. So the pH of the leaked solution could be an appropriate tool to study the freezing damage of pistachio rootstocks. Based on the results of pH and ionic leakage, P. mutica and P. atlantica were the most frost tolerant and sensitive rootstocks of this experiment, respectively. تفاصيل المقالة -
حرية الوصول المقاله
4 - The Evaluation of Inter-Specific Hybrid of P. atlantica × P. vera cv. ‘Badami Zarand’ as a Pistachio Rootstock to Salinity Stress
H. R. Karimi A. Maleki KuhbananiIn order to evaluate the inter-specific hybrid of P. atlantica × P. vera cv. ‘Badami Zarand’ to salinity stress, an experiment was conducted as a factorial based in a completely randomized design with 0, 60, 120 mM salinity levels of NaCl2, CaCl2 and M أکثرIn order to evaluate the inter-specific hybrid of P. atlantica × P. vera cv. ‘Badami Zarand’ to salinity stress, an experiment was conducted as a factorial based in a completely randomized design with 0, 60, 120 mM salinity levels of NaCl2, CaCl2 and MgCl2 (3:2:1) on two rootstocks ‘Qhazvini’ and ‘Badami Zarand’ and an inter- specific hybrid of P. atlantica × P. vera cv. ‘Badami Zarand’. Mineral concentrations of sodium (Na), chloride (Cl), magnesium (Mg), calcium (Ca), copper (Cu) and iron (Fe) in shoot increased at 120 mM salinity level; however, the phosphorus (P) concentration in root decreased. Rootstocks had significant differences in the concentrations of elements of shoot. The highest concentrations of Naand Clwere observed in ‘Badami Zarand’ and ‘Qhazvini‘rootstocks, and the lowest was observed in hybrid rootstock. The highest concentration of Mg was observed in hybrid rootstock, and the lowest was observed in ‘Badami Zarand’. Due to restriction in the absorption and transport of chloride and sodium to the shoot, hybrid rootstock could tolerate more salinity than ‘Badami Zarand’ and ‘Qhazvini’ rootstocks. تفاصيل المقالة
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