Estatística multivariada na discrimina??o de ra?as amaz?nicas de pupunheiras (Bactris gasipaes Kunth) em Manaus (Brasil)

摘要

Landraces and populations of peach palm growing along the Amazon and Solim?es rivers present great genetic variability, that it was not totally characterized yet. In the present study, multivariate techniques of cluster analysis, principal components analysis and discriminant analysis, were applied to fifteen morphological descriptors with the objective of morphometric characterizing three existing landraces of this plant along these rivers basins. The three analysis together allowed to discriminate the studied landraces, showing that the most important descriptors were: numbers of ears per raceme, rachis length, fruit weight, thickness of fruit bark, facility to peel fruits, weight of fruit bark, fruit flavor, pulp thickness, morphological distance of fruit and seed weight.