Adaptability and stability of vegetable soybean (edamame) progenies in R 6 and R 8 stages and advanced generations of inbreedingSoybean is one of the most complete food known by the human being.The vegetable soybean or "edamame" belongs to the same species of the soybean cultivated as commodity, Glycine max (L.) Merrill.Edamame is a name with Japanese origin used for maintenance and reduction of the risks of several chronic diseases.The main objectives of this study were: a) to estimate useful genetic parameters to the breeding program of soybean vegetable, specially the genotype x environment interaction; b) to evaluate adaptability and stability of the genotypes and the representativeness of the environments; c) to characterize crosses and their progenies aiming the extraction of superior inbred lines.The genotypes corresponded to 23 crosses and their 42 progenies in advanced generations of inbreeding, that is from F 6:10 to F 6:13 generation, besides three common checks (BRS 257, BRS 267, and IAC 100).They were evaluated in two developmental stages, immature R 6 and mature R 8 soybean, during two (2011/12 and 2012/13) and four (2009/10 to 2012/13) growing seasons, respectively.The four crop years and three locations (Anhumas, Areão and ESALQ) were combined in nine environments.In each environment, there were carried out two experiments involving two fungicide managements; in the first experiment, there were made successive fungicide applications for controlling Asian soybean rust (FAS) and late season leaf diseases (DFC), whereas in the second experiment there were made fungicide applications for controlling only DFC.Each experiment was designed in a randomized complete-block design with three replications.Each repetition was divided into two experimental sets with common checks, forming an augmented design (Federer).The experimental plot was a row with 5 m x 0.50 m.The "crop years", "locations" and "fungicides" contributed significantly to the genotypes x environments interactions in both R 6 and R 8 stages.For pod yield (PV) in the R 6 stage, the Eberhart and Russell method highlighted four crossings (19-005: USP 98-06005 x J-75, 19-006: USP 98-06005 x Hakucho, 19-045: USP 98-06031 x Hakucho and 19 -111: USP 98-06029 OCEPAR-4), generating 15 progenies (especially the numbers 19-045-03-01 and 19-111-02-06) with the highest potential to be used as parents and or as new cultivars.The biggest highlight was the progeny 19-111-01-09, with very favorable performance for R6 traits, high seed yield (PG) and tolerance to rust in R 8 .The AMMI analysis revealed that almost all genotypes were stable and with PV around 150 g/2plants.For the R 8 stage, the location effect determined that Areão was the best location for PG and one hundred seed weight (PCS).For the R 6 stage, the year effect indicated that the crop year 2012/13 was the most favorable for the progeny performance for all traits.There were estimated highly significant correlation between PCS in R 8 and one hundred pod weight in R 6 (0.808 **), as well as between PCS and pod width in R 6 stage (0.725**).