Showing 2 results for Salahvarzi
E. Samieiani, H. Ansari, M. Azizi, S. M. Hashemi-Nia, Y. Salahvarzi,
Volume 4, Issue 3 (Journal of Science and Technology of Greenhouse Culture 2013)
Abstract
Nowadays, stress management is considered to be very important in landscapes. The present research was conducted to investigate the effects of regulated deficit irrigation at 4 levels (25, 50, 75 and 100% of lawn irrigation requirement) on some biochemical indices of four groundcover plants (Lolium perenne, Potentilla spp, Trifolium repens and Frankinia spp) to be used in landscapes, with 3 replications. Results showed that Frankinia spp had the highest proline content (0.84 mg/g fresh weight) and the lowest chlorophyll content (15.9 mg/g fresh weight), the 75% stress treatment had the highest proline content (0.84 mg/g fresh weight) and control treatment had the highest chlorophyll content (32.6 mg/g fresh weight). For total carbohydrates, the highest and the lowest amounts (1.54 and 0.79 mg/g fresh weight) belong to Lolium perenne and Trifolium repens, respectively. Also, among the species, Trifolium repens showed the highest antioxidant activity (75.05%). In general, regulated deficit irrigation affected different biochemical characteristics of the examined groundcover plants significantly. But, applying it up to the damaging point for landscape plants can be an important management strategy for reduction of water consumption in green spaces.
M Kamali, M Shour, A Tehranifar, M Goldani, Y Salahvarzi,
Volume 5, Issue 4 (Journal of Science and Technology of Greenhouse Culture 2015)
Abstract
High carbon dioxide (CO2) concentration in atmosphere has direct effects on plants activities. In order to investigate the effect of increased CO2 concentration from 380 to 700 and 1050 mg/L on some chemical and physiological characteristics of Amaranthus tricolor under three salinity treatments (0, 150, and 300 mM NaCl), an experiment was conducted in Research Greenhouse of Ferdowsi University of Mashhad, Iran. The results showed that interaction of salinity and CO2 in traits such as total dry weight, electrolyte leakage, relative water content and Na + uptake was significant at 1% probability level. However, interaction of CO2 and salt stress in plant traits such as proline and total carbohydrates did not show any significant difference (p<0.01). The highest relative water content was measured in 700 mg/L CO2 treatment, when the plants were irrigated with distilled water (no salinity stress). Application of 700 and 1050 mg/L CO2 treatments, at the highest salinity level, reduced electrolyte leakage by 26 and 19 percent, respectively, as compared to CO2 control treatment
