Approximately 30% of plant species of Turkey, which is among the richest countries in terms of biodiversity, has been endemic. Wild rhubarb (Rheum ribes L.) is a wild vegetable grows especially in the eastern region of Turkey and is an endemic species.In this study, genetic relationships among 80 wild rhubarb genotypes collected from some regions of Lake Van Basin, which are in the distribution area, were tried to be determined by iPBS marker system. At the same time, a commercial variety of R. rhabarbarum, which is a cultivated species, was used for checkas control. PCR studies were conducted with 23 iPBS primers to determine genetic relationships, and a total of 340 scorable bands were obtained. 100% polymorphism rate was obtained from all primers studied. While the average PIC value was found to be 0.90, the highest value was found to be 0.97 from the primer # 2220. It was determined that the genotypes were divided into 3 basic groups in the dendogram created with UPGMA based on Jaccard similarity coefficient.

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Due to the short harvest season and their sensitivity to storage, the preservation of fresh mulberry fruits is a very important process. Drying is a method used to preserve mulberry fruits in the long term. In this study, response surface methodology (RSM) was applied for the optimization of hybrid drying conditions of two different sour black mulberries. The linear and interaction effects of independent parameters such as temperature (50, 60 and 70°C) and microwave power (100, 200 and 300 W) variables were determined on mulberries. Bioactive properties and energy aspects were monitored as influenced by drying conditions. According to the results increase in microwave power provided a significant decrement in the specific energy consumption (SEC) and the total anthocyanin content (TAC), while increase in the energy efficiency (ηen) and total phenolic content (TPC) for both genotypes. In all cases, statistical values showed that all drying curves of black mulberry were best described by the Logistic model. Multiple response optimization was carried out for studied parameters and it was concluded that maximum antiradical activity (ARA), TPC, TAC, ηen and minimum drying time (DT) and SEC values would be at 300 W-50 ºC (desirability=0.842) and 300 W-66.5 ºC (desirability=0.744), for Morus nigra 1 (MN1) and Morus nigra 2 (MN2), respectively. According to the finding, the greatest TPC, ARA, TAC, DT, SEC and ηen were determined as 20.10 mg GAE/g, 86.00%, 456 mg/kg, HIGHLIGHTS• Sour black mulberries were evaluated in terms of drying method.• Logistic model showed the best fitting performance.• Specific energy consumption increased with increase in microwave power.