Avaliação dos coeficientes de variação de variáveis morfológicas de mudas de espécies de eucalipto

Abstract

This study aimed to evaluate the coefficients of variation as a measure of precision analyzing morphological characteristics of seedlings of Eucalipytus urophylla, E. robust, and Corymbia citriodora comparing classification bands coefficient of variation of certain morphological variables that define the quality of seedlings. Coefficients of variation values were collected in papers published on the approach to evaluation of morphological characteristics of tree seedlings. Variables were evaluated: height, diameter, shoot dry mass, root dry mass and leaf area. We used the methodology proposed by Garcia (1989) that relates the mean and standard deviation of the coefficients of variation. It was found that the classification ranges of the coefficients of variation showed specific characteristics for each variable evaluated. It was found that for the variables: root dry mass, stem diameter and leaf area coefficients were low. While the variables: shoot dry mass and height showed average coefficients according to the ranges established coefficients of variation.