Path analysis in fruits of the buriti (Mauritia flexuosa L. f) in populations from the Brazilian Middle North Region

Abstract

The Mauritia flexuosa L.f. tree is of immense socioeconomic significance in the Brazilian Middle North Region for its manifold benefits, but mainly for its fruit. However, the potential of this species has still not been extensively studied. The objectives of this work were to study the phenotypic and genotypic correlations between the characteristics of the M. flexuosa fruits and to establish the direct and indirect effects of the secondary characteristics of the fruit on the pulp yield. Samples of ten fruits per genotype were gathered from four natural populations, from 240 different genotypes. These samples were assessed in terms of the fruit, almond and hull weights, equatorial and polar fruit diameters, and the fruit, almond and pulp, volumes, as well as the pulp yield. The genotypic correlations showed greater magnitude, higher than the phenotypic correlations, and both were significant and revealed equal signs. The indirect selection of the M. flexuosa genotypes with greater fruit weight and almond volume favored the increase in the pulp yield in this fruit species.

Association between traits related to fruit quality in papaya (Carica papaya L.) hybrids and their implications for selection

“…Dias et al. (2017) stated that this result is due to the environment not having a significant influence to overcome the genetic effects. All variables related to fruit morphology (FW, PT, FL, and FD) showed a strong genotypic and phenotypic correlations with each other, providing evidence for the use of indirect selection for such variables.…”

“…After verifying the multicollinearity effect, the phenotypic correlation matrix was used to obtain the path coefficients, according to Dias et al. (2017). The PV% was employed as the main variable.…”

“…For other variables, the genotypic correlation showing higher magnitudes than the phenotypic correlation, but there was no significant variation between both correlations in some associations. Dias et al (2017) stated that this result is due to the environment not having a significant influence to overcome the genetic effects. All variables related to fruit morphology (FW, PT, FL, and FD) showed a strong genotypic and phe-notypic correlations with each other, providing evidence for the use of indirect selection for such variables.…”

Brazilian germplasm of winter squash (Cucurbita moschata D.) displays vast genetic variability, allowing identification of promising genotypes for agro-morphological traits

“…Analysis of correlations between characteristics has been widely used in plant breeding, where often a high number of characteristics must be considered simultaneously [55,56]. This analysis is often used to assist in indirect selection for certain characteristics [55,57].…”