Ariyan, a new high-yielding slender green bean cultivar suitable for cold, temperate and temperate cold regions

Ariyan cultivar (line KS10071) was selected from common bean germplasm (Phaseolus vulgaris L.). In an observational evaluation of 302 common bean lines in 2014 in Karaj, Ariyan cultivar along with 24 desirable and marketable lines were selected for a preliminary yield trial. In 2015, 25 lines were compared with Sunray, Valentino and Contander check cultivars in summer cultivation. According to the results, eight desirable lines without string in pods and marketability were selected for the next year's cultivation. In the spring of 2016, eight lines were planted along with the commercial cultivars Sunray, Valentino and Contander. According to the results, all eight lines were selected for adaptability testing. To evaluate the adaptability and yield stability of the selected lines, an experiment was conducted in a randomized complete block design with three replications in three regions of Karaj, Sari and Zarghan during two years (2017-2018) and eight lines were compared with commercial cultivars Sunray and Valentino. Results showed that the Ariyan cultivar with 14850 kgha-1 green pod yield had 10% and 14% more yield than Valentino and Sunray commercial cultivars, respectively. In these experiments, no signs of mosaic virus and two spotted mites were observed in this cultivar. In 2019, the results of yield evaluation of Ariyan cultivar under conditions of farmers in Alborz and Mazandaran provinces showed that the average of green pod yield of Ariyan cultivar (15748 kgha-1) was 4.98% higher than Valentino cultivar (15001 kgha-1). In 2020, this cultivar was recognized as a tolerant cultivar in the reaction to BCMV virus. Due to the desirable characteristics of Ariyan cultivar such as high green pod yield, excellent pod marketing, uniformity of pods and tolerance to BCMV disease, this cultivar was released as Ariyan and is recommended for cultivation in the cold, temperate and temperate cold regions of Iran.