GENETIC-VARIABILITY BETWEEN-AND-WITHIN PROVENANCES OF TROPICAL PINES

The objectives of this study were to estimate genetic parameters and t o evaluate the growth traits and stem form of tropical pines provenanc es, in Cerrado region, using yielding and form characteres: volume und er bark, stem form, forking and foxtailing. The design used was a rand omized blocks with five replications with information within the plot. The ANOVA results showed significant (P < 0.01 and P < 0.05) and non s ignificant differences between provenances for the evaluated traits. H eritability estimates based on block average were always greater than heritability estimates based on individual values. P. tecunumanii show ed better silvicultural performance than P. caribaea var. hondurensis and P. oocarpa.