M.A. Thesis:

Yield and yield component response of Common Purslane (Protulaca Oleracea L.) to time of osmotic adjustment in saline condition

Under adverse environmental conditions (drought stress, salinity, cold, etc.) that the production of amino acids is slow or stopped, the use of fertilize contain amino acids can ameliorate the abiotic stressors through induced systemic tolerance in associated plants.Samantin is a collection of 18 types of amino acids needed for plant growth and development.The objective of this study was to determine the effect of application method and amount of osmotic adjustment (Samantin) on yield and yield component of Common Purslane (Portulaca oleracea L.) grown under salt stress. The study was conducted in pot experiments under greenhouse conditions in Sabzevar branch, Islamic azad university in 2016. Factors were application method (Soil applied (1 Kg/ha), Foliar application and foliar+ soil applied ) and salinity levels (0, 6, 12 and 18 ds/m). The results showed that the method of application did not have a significant effect on plant height, number of lateral branches and plant dry weight. The highest number of capsule per plant seeds per capsule and grain yield were obtained from soil application, the highest 1000 kernel weight and sodium to potassium ratio in foliar application and the highest percentage of potassium from foliar+ soil applied of Samantin. Salinity reduced 50.33% of the number of lateral branches,44.33 % capsule pel plant 35% Number of seeds per capsule, 6.6% 1000 seeds Weight, 69.81% Dry weight per plant, 29.06% seed yield. Potassium amount and increased 56.85% Sodium amount. Overall, Seed yield of Purslane wasnlt affected by salinity by 12 ds/m Consumption of soil was more suitable than other methods in reducing the effects of salinity stress.

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