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In order to evaluate the compatibility of spring rapeseed genotypes, an experiment with 18 treatments in a randomized complete block design with three replications for two cropping years (1397-1397) in Gorgan, Sari, Bushehr, Zabol, Behbahan , Hajiabad, Moghan, Dezful and Karaj were performed. In this experiment, two free pollinator cultivars RGS003 and Delgan were used as controls. Each experimental plot consisted of four 5 m lines with 30 cm line spacing. During the growing season, planting distance to emergence, flowering start date, flowering end date, flowering period length, number of sub-branches per plant, number of pods per plant, number of seeds per pod, plant height, ripening date, growth period of notes Was removed. After harvest, grain yield, 1000-grain weight and seed oil percentage (only the second year of one replication) were determined. Comparison of mean grain yield showed that the evaluated lines in terms of grain yield had a significant difference at the level of one percent. The average biennial yield of genotypes showed that the evaluated lines in terms of grain yield had a significant difference at the level of one percent and SRL-96-17 and SRL-96-11 lines with an average of 3148 and 3040 kg / ha, respectively had the first and second ranks, respectively. Two-year disease evaluation in Sari and Gorgan showed that for white stem rot SRL-96-17 and SRL-96-11 lines were in the semi-resistant and semi-susceptible groups (with 41 and 58 mm wound length, respectively). Instead, in terms of reaction against black leg disease, SRL-96-11 was in a favorable condition compared to both control cultivars and showed a lower infection rate (31%).Key words: Compatibility, disease, rapeseed, spring cultivars.
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