Showing 2 results for Aalipour
Mr Hamed Aalipour, Dr Ali Nikbakht, Dr Nematollah Etemadi, Dr Farhad Rejali, Dr Mohsen Soleimani,
Volume 8, Issue 32 (vol. 8, no. 32. 2020 2019)
Abstract
Trees in the landscape always lost their vitality for various reasons, and decline or dieback are experiencing. One of the factors that can affect the decline of trees can be pointed to drought stress. This study was conducted to evaluate the effects of inoculation with mycorrhizal fungi (Rhizophagus intraradices and Funneliformis mosseae inoculated, and the combination of both species) and growth promoting bacteria; Pseudomonas Flourescens on growth responses of Cupressus arizonica in experiencing stress induced by a deficit of water as a factorial experiment based on completely randomized design, with 3 replications. In this study, the Interactions between fungi, bacteria and deficit irrigation on the concentration of phosphorus and iron, ion leakage, proline content and shoot dry weigh were significant. Under deficit irrigation most of the treatments such as colonization rate (by 39%), phosphorus (by 33%), potassium (by 16%) and iron (by 25%) cocentration, relative water content (by 25%), chlorophyll content (by 76%), height (by 29%), shoot dry weight (by 41%) and the Cupressus vitality (by 35%) decreased; on the contrary, the percentage of electrolyt leakage (by 36%) and proline content (by 122%) increased. Morever, inoculation with mycorrhizal fungus increased the concentration of phosphorus and iron, relative water content, chlorophyll content, height, shoot dry weight and However reduced ion leakage and proline content and lead to improvement of plants growth and vitality. The presence of Pseudomonas alone did not have a significant role in improving the growth of plants under water stress conditions, but its interaction with mycorrhizal fungus showed positive effects. In general the results of this experiment showed that inoculation of cupressus plant with mycorrhizal fungus with the use of P. florescent bacteria can have a positive effect on the survival of this plant under water stress conditions.
Roghayeh Hossein Hashemi, Ali Nikbakht, Hamed Aalipour, Mohammad Hossein Ehtemam,
Volume 13, Issue 63 (vol. 13, no. 63 2024)
Abstract
In cut rose flowers, petals senescence not only confines the ornamental value but also imposes a significant economic loss. Therefore, delaying the senescence of cut rose flower petals senescence is very significant to acquire high commercial benefit. In this regard, research was conducted to investigate the effect of the application of the new technology of enrichment with oxygen nanobubbles and silicon nano chelate in the conditions of soilless cultivation on the physiological indicators, the stomatal condition, and the vase life of cut roses. The current research is a factorial split-plot experiment in the form of a randomized complete block design with three factors, including two cut rose cultivars (Samurai and Jumilia), nutrient solution enrichment with oxygen nanobubbles (with oxygen nanobubble concentrations of 0 and 20 mg/liter and for 4 minutes per hour), and foliar spraying of 2% silicon nanochelate (with a concentration of 0 and 2 ml L-1 and an interval of 10 days) with three repetitions. Application of silicon nanochelate compared to the control treatment resulted in 13.4%, 15.6%, 25.6%, 18.3% and 28.3% improvement in leaf area, chlorophyll a, chlorophyll b, total chlorophyll and carotenoid content, respectively. Interaction of oxygen nanobubble and silicon nanochelate content of chlorophyll a (14.7%), chlorophyll b (26.1%), total chlorophyll (18%), carotenoids (27.2%), stomatal area (7.41%), and diameter increased stomata (4.48%), stomata length (7.30%), stomata width (6.49%), and the ratio of the number of open to closed stomata (53%) compared to the control. The use of oxygen nanobubbles had a more pronounced effect compared to silicon nanochelate, which can be introduced as an indicator treatment for increasing the post-harvest life and quality of rose-cut flowers.
