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Path analysis under multicollinearity for papaya production of the solo and Formosa groups 94
Moreira,Sarah Ola; Kuhlcamp,Karin Tesch; Barros,Fabíola Lacerda de Souza; Oliveira,Sabrina Batista de; Trindade,Roberto dos Santos.
Abstract Correlations and path analysis allow the understanding of the interrelations between characteristics of interest to the plant breeding. However, in order for their results to be reliable, the undesirable effect of multicollinearity must be excluded. The objective of this study was to estimate the correlations and their partitioning in direct and indirect effects, by path analysis, on the fruit production per plant (FP) of papaya from the heterotic Solo and Formosa groups, using two different strategies to circumvent multicollinearity. Eleven agronomic variables were evaluated in twelve papaya genotypes from the Solo group and nine from the Formosa group. Path analysis was obtained with the FP as the basic variable and to eliminate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carica papaya L.; Ridge path analysis; Indirect selection; Correlations.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300802
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Variability of root traits in common bean genotypes at different levels of phosphorus supply and ontogenetic stages 90
Trindade,Roberto dos Santos; Araújo,Adelson Paulo.
Selection of common bean (Phaseolus vulgaris L.) cultivars with enhanced root growth would be a strategy for increasing P uptake and grain yield in tropical soils, but the strong plasticity of root traits may compromise their inclusion in breeding programs. The aim of this study was to evaluate the magnitude of the genotypic variability of root traits in common bean plants at two ontogenetic stages and two soil P levels. Twenty-four common bean genotypes, comprising the four growth habits that exist in the species and two wild genotypes, were grown in 4 kg pots at two levels of applied P (20 and 80 mg kg-1) and harvested at the stages of pod setting and early pod filling. Root area and root length were measured by digital image analysis. Significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth habit; Phaseolus vulgaris; Phosphorus efficiency; Root system.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400013
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