Genetic diversity of long-established populations of Elaeis guineensis jacquin (Arecaceae)

Kyvia Pontes Teixeira Das Chagas,Cristiane Gouvêa Fajardo,Fábio De Almeida Vieira,Ageu Da Silva Monteiro Freire,Luciana Gomes Pinheiro

doi:10.1590/0100-29452019023

Kyvia Pontes Teixeira Das Chagas, Cristiane Gouvêa Fajardo + Show 3 more

Open Access

https://doi.org/10.1590/0100-29452019023

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Abstract

Abstract This study aimed to estimate the genetic diversity of three Elaeis guineensis populations in Rio Grande do Norte state, as well as to verify the decreases in effective population size. The population with the highest polymorphism was MAT (Mata) with+ 57 loci (72%), followed by RIA (Riacho) with 54 loci (68%) and HOR (Horta) with 34 loci (43.03%). The RIA population was shown to be the most genetically diverse, with Nei (h = 0.28) and Shannon (I = 0.41) diversity indices. There was high genetic differentiation among populations (AMOVA, analysis of molecular variance = 42%), which was separated into three distinct genetic groups according to a Bayesian analysis. There was a significant population decrease (P < 0.05) for the HOR population in the IAM (infinite allele model) and SMM (stepwise mutation model), and for the RIA population in the IAM. The data obtained in this study may support ex-situ conservation projects for Elaeis guineensis, contributing to the selection of genotypes and their sustainable use.

Highlights

Plants in the Arecaceae family are amongst the most economically important species in Brazilian forests
The Elaeis guineensis palm tree is popularly known as oil palm
E. guineensis oil can be extracted from both the fruit and the nut. It has several uses in the pharmaceutical and food industry, as well as for producing biofuels (ABREU; OLIVEIRA; GUERRA, 2010). As it comes from a renewable energy source, palm oil can be used as biodiesel (KUSS et al, 2015)

Summary

Introduction

Plants in the Arecaceae family are amongst the most economically important species in Brazilian forests. In addition to having a direct relationship with the agricultural sector, these species have several non-timber forest products of economic and ecological importance such as leaves, fruits, seeds and oils (MARTINS et al, 2012). E. guineensis oil can be extracted from both the fruit (palm oil) and the nut (palm kernel oil). It has several uses in the pharmaceutical and food industry, as well as for producing biofuels (ABREU; OLIVEIRA; GUERRA, 2010). As it comes from a renewable energy source, palm oil can be used as biodiesel (KUSS et al, 2015)

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