Análise da repetibilidade em alguns descritores morfológicos para soja

Abstract

IVAnálise da repetibilidade em alguns descritores morfológicos para soja Analysis of the repeatability in some morphologic descriptors to soybean

Repeatability analysis on morphological descriptors in the early stages of development

“…The authors reported that estimates of repeatability coefficients for the CH were low, ranging from 0.345 to 0.793, for the CE ranged from 0.478 to 0.914, for the CPIN, from 0.428 to 0.865, for CPFT, from 0.163 to 0.645 and for CRFC the coefficients ranged from 0.216 to 0.553, with prediction of real value average of 84.72%. The results obtained in Experiments 1 and 2 of this study were similar to that of Matsuo et al (2012) for the variable CH, however, the magnitude of the repeatability coefficient found in the other experiments and for the other characteristics were superior. This difference in the magnitude of the values of repeatability varies with the ------------------------------------------------ANOVA------------------------------------------------ ------------------------------------------------CP(cov)------------------------------------------------ nature of the character, with the genetic properties of the population, with the conditions in which individuals are developed and if the genotype of the individual, where repeated measurements are made, is stabilized (Cruz et al, 2004).…”

“…The results for CH, CE and CRFT corroborate with the obtained values by Matsuo et al (2012), however they present lower predicted values to CPIN and CPFT, which probably is due to the genetic properties of different genotypes analyzed in the two studies.…”

“…While for the EC the same coefficient was lower in experiment one (0.724) by the method of ANOVA and higher in experiment 5 (0.823) by the method of CP(cov). The magnitude of the determination coefficients for the CH and CE was greater than or equal to 75.20% by all methods in the five experiments evaluated, and lower than the lowest value obtained by Matsuo et al (2012), equal to 82.5%. For the ALV3, the values for the Table 2.…”

“…Nogueira et al (2008) and Matsuo et al (2012) also identified variability in CH, EC, and CPFT CRFT among genotypes, in four different periods of seeding. Furthermore, Nogueira et al (2008) reported large genetic influence for most of the characteristics in different periods, showing little environmental effect.…”

“…The AIFU presented magnitude of 0.405 by the method of ANOVA and 0.600 in the CP(cov) in Experiment 4 and 5, respectively, associated with the determination coefficient greater than 77.00% (Table 3). The repeatability coefficients and the prediction of real value for the CH, CE, CPIN, CPFT and CRFT in soybean genotypes were studied by Matsuo et al (2012). The authors reported that estimates of repeatability coefficients for the CH were low, ranging from 0.345 to 0.793, for the CE ranged from 0.478 to 0.914, for the CPIN, from 0.428 to 0.865, for CPFT, from 0.163 to 0.645 and for CRFC the coefficients ranged from 0.216 to 0.553, with prediction of real value average of 84.72%.…”