The adaptability and productivity of rapeseed (Brassica napus L.) cultivars and hibrids of "canola standard" were evaluated for four years at Embrapa Trigo, in Passo Fundo, RS, Brazil. Treatments consisted of 18, 10, 11, and 40 rapeseed germplasm evaluated in 1993, 1994, 1995, and 1996, respectively. The sowing dates in the period under study were: May 15, 1993; June 9, 1994; June 13, 1995; and July 5, 1996. In the first year the germplasm were sown to conventionally-prepared soil, and in the remaining years, under no-tillage. The experimental design consisted of randomized complete blocks, with three (1996) or four (1993, 1994, and 1995) replications and plots with a total area of 4.8 m². Plant maturation of early rapeseed germplasms was uniform and their cycle was completed before the preferential sowing date of soybean. Thus, the short cycle rapeseed germplasms showed to be feasible under no-tillage. Some medium and long cycle rapeseed germplasms provided higher yield than the other tested germplasms.