Aiming at the knowledge of the yielding capacity of new peanut lines, 36 trials in randomized complete-block design, using 'Tatu' as control were carried out in the Main Experimental Station of Campinas, during the rainy season of 1977, 1978 and 1979. The peanut lines originated from individual selection in the crosses of Tatuí x Roxo 80-1, Tatu x Introduction, Tatu x Tatuí, Tatu x Tatu Amarelo, Tatu x Roxo 47, Tatu x Roxo 80-1, Tatu x (Tatuí x Arachis monticola), Tatu x (Tatuí x A. villosa) and (Tatu x Roxo 80-1) x (Tatuí x A. monticola). The statistical analyses showed that 22 lines with means of 4,219 to 6,445 kg/ha were superior to those observed for Tatu, which ranged from 3,466 to 4,887 kg/ha. In thirteen analyses the effects of year and treatment x year were significant in eleven and three of them, respectively. The best lines will be included in the regional trials and seeds of some of them increased in large quantities for releasing to the growers.