Influence of spatial, edaphic and genetic factors on phenols and essential oils of Myrciaria cauliflora fruits

Alessandra R Duarte,Suzana C Santos,Pedro H Ferri,José C Seraphin

doi:10.1590/s0103-50532012000400020

Abstract

Essential oil chemical composition and phenolics (total phenols, tannins and anthocyanins), reducing sugar and fruit acidity contents of Myrciaria cauliflora were obtained from cultivated populations in six sampling sites. Canonical redundancy (RDA) and discriminant analyses revealed four clusters of samples based on contents of α-copaene, tannins, reducing sugar and fruit acidity as predictor variables. The total variation partition performed by partial RDAs showed a strong influence of edaphic factors on phenolics, reducing sugar and fruit acidity data set. However, the polymorphism of essential oils may be genetically determined. Spatial influence on chemovariations was significant for all constituents, but less pronounced for essential oil data.

Highlights

The Jaboticaba tree, known as Brazilian grape tree (Myrciaria cauliflora (Mart.) O
We report the results obtained for the chemical composition of essential oils, phenolics, reducing sugar and acidity of M. cauliflora fruits collected from populations growing on six soils of Jaboticabal Winery, located in central Brazilian Cerrado
ASum of canonical eigenvalues (l) divided by total inertia (1.0) × 100; bprobability based on Monte Carlo test (999 permutations); cfirst autovalue; dset 1: essential oil data; set 2: phenolics, reducing sugar and fruit acidity data; edata set as covariate; spatial data are significant monomial terms of third-order polynomial trend surface originated by first two principal component analysis (PCA) axes of UTM geographical coordinates of sampling sites

Summary

Introduction

The Jaboticaba tree, known as Brazilian grape tree (Myrciaria cauliflora (Mart.) O. Trace statistics (i.e. the sum of all canonical eigenvalues) were highly significant (traces = 0.324 and 0.179; F-values = 4.434 and 3.257; p < 0.0001), giving signs that patterns in the RDA plane did not arise by chance.[14,15] These results suggest a moderate but significant association between oil composition/phenolics/reducing sugar/fruit acidity contents and the measured texture and nutritional soil parameters (environmental factors) shown in the data sets.

Results

Conclusion