Canonical correlations for radish (Raphanus sativus l.) Growth variables

The importance to evaluate the final yield of the crop. The objective of this work was to estimate the linear relationships among growth variables, to evaluate groups of shoot and root variables by analyzing canonical correlations and the genetic distance among the three radish cultivars. The experimental design was a randomized block design, organized in a factorial scheme: three (radish cultivars) x seven (collection times of plants 13, 16, 19, 22, 25, 28 and 31 days after sowing), arranged in four replicates. The plants were collected at regular intervals of three days, starting on the thirteenth day after sowing until the end of the growing cycle. The variables analyzed in each collection were: number of leaves, leaf area, transverse and longitudinal diameter, root length, shoot, root and total dry matter. The obtained data were submitted to a joint analysis, and the measured variables were submitted to linear correlation with the significance based on the t test at 1 and 5% of probability, this analysis had the intention of evidencing the trend of linear association for the variables and analysis of canonical correlations. Radish plants with larger leaf area demonstrate lower root development, based on the coefficient of canonical correlation. There were positive correlations among all the analyzed variables, especially the leaf area with dry matter, plant height and leaf number.