It was studied genetic variability in the progenies of bacabi ( Oenocarpus mapora Karsten) and bacaba (Oenocarpus distichus Mart.) for the characters of emergency and initial growth of the changes. One collected mature fruits of 47 matrices in yards of rurais producers yards and from the Germoplasm Bank of the Embrapa Amazônia Oriental in Belém, involving the study of 47 progenies open polinization delineated in blocks experimental design with four replications and parcels of 24 seeds. The variances analyzed were: the emergency percentage (PE), the average time of emergency (TME), the rate of absolute growth of the height of seedling (TCAA) and rate of absolute growth of the diameter of seedling (TCAD). The progenies showed significant statistic differences (p<0,01) for all the analyzed characters for the two species, with excellent experimental precision. In general, for herdability, it was verified that in the total set of progenies and the set of progenies of bacabi all the studied characters had presented estimates of herdability above of 50%. The exceptions had been for TME and TCAD, in the set of progenies of bacaba, with estimates of herdability below of 50%. The "b" coefficients showed the same trend observed in herdability, and their magnitudes also express the genetic variability. The gains of selection available take off the percentages of the pre-determined selection showed values highest for all the characters, were auspicious for the pression of the selection with intensity of the 10% for the total of progenies and alone bacabi and 20% to progenies of the bacaba.
Oenocarpus; Emergence; Herdability; Genetic parameters
