Componentes de rendimento da canola e suas relações com a produtividade de grãos

Abstract

It is by knowing the relationship between the characteristics of the plant and its yield components that it is possible to obtain a more productive type of plant. Thus, the objective of the present work is to evaluate, through the analysis of trails, the influence of the yield components on the grain yield of canola (Brassica napus L. var. oleifera). The experimental design used was randomized block design (BCT) with five repetitions, and the plots consisted of five lines 5 m long, spaced 0.34 m apart, totaling 8.5 m2 per plot, using a density of 400,000 plants per hectare or 40 plants m2. The date of emergence, flowering and maturation were evaluated in each plot. The useful area used was 4.08 m2 and within the useful plots 5 plants were harvested, where the following characters were evaluated: plant height, number of grains per syllable (NGS), number of siliques per plant (NSP), number of grains per plant (NGP) and thousandgrain mass (MMG). The data were submitted to variance analysis (F test, with 5% probability) and to the means test, by means of the Tukey test at 5% error probability. Finally, a Trail Analysis was performed to evaluate the correlation between the variables studied. It was observed that the Nuola 300 hybrid was the most productive among the genotypes studied. The variables number of siliques per plant and number of grains per plant, by presenting high positive correlation and direct effect with the yield variable, indicates that these are the main variables correlated with the yield variable.