The macauba palm, Acrocomia aculeta, stands out as an optional resource in the vegetable oil production chain, meeting the global demand for this raw material. Still, since the macauba is a marginal species, the development of superior genetic materials can ensure uniformity in large-scale orchards and productions, which are prerequisites for the establishment of new crops in the agricultural scenario. The present work evaluated a macauba progeny test for the selection of promising genotypes with agronomic traits of interest. Thirty-six genetic accessions from half-sib families were evaluated. They were acquired from natural populations growing in two regions in Minas Gerais State, Brazil. The genotypic values were obtained based on vegetative, reproductive, and biometric data from the fruits, via mixed models, followed by genetic diversity analysis. Genetic parameter estimates were obtained using the Restricted Maximum Likelihood procedure from interactions in the mixed model equations. The study revealed high values of environmental variation between plots and varying magnitudes for <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10681_2025_3518_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="37" /> </InlineMediaObject> <EquationSource Format="TEX">$CV_{gi}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>C</mi> <msub> <mi>V</mi> <mrow> <mi mathvariant="italic">gi</mi> </mrow> </msub> </mrow> </math></EquationSource> </InlineEquation>, <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10681_2025_3518_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="32" /> </InlineMediaObject> <EquationSource Format="TEX">$CV_{e}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>C</mi> <msub> <mi>V</mi> <mi>e</mi> </msub> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10681_2025_3518_Article_IEq3.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="31" /> </InlineMediaObject> <EquationSource Format="TEX">$CV_{r}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>C</mi> <msub> <mi>V</mi> <mi>r</mi> </msub> </mrow> </math></EquationSource> </InlineEquation>. The progenies, either isolated or as single population sets, revealed great genetic diversity. When seeking to develop cultivars with a lower number of crossings, the progenies from the Santa Luzia-MG region proved to be suitable for initiating crossings as they presented greater genetic uniformity. However, considering the diversity and genetic value of the Luz-MG families, the following crossings are recommended: TP6 × TP8, TP6 × TP18, TP6 × TP13, TP8 × TP18 and TP13 × TP18, as they have a better content of alleles favorable to genetic improvement.

Acrocomia aculeata palm progeny test: genetic variability and heritability of morpho-agronomic traits

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发表日期：

2025年5月7日

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Luana Aparecida de Oliveira,
Sérgio Yoshimitsu Motoike,
Leonardo Lopes Bhering,
Ana Carolina Melo Ribeiro,
Míria Grasiele Casado da Silva,
Kacilda Naomi Kuki

摘要

The macauba palm, Acrocomia aculeta, stands out as an optional resource in the vegetable oil production chain, meeting the global demand for this raw material. Still, since the macauba is a marginal species, the development of superior genetic materials can ensure uniformity in large-scale orchards and productions, which are prerequisites for the establishment of new crops in the agricultural scenario. The present work evaluated a macauba progeny test for the selection of promising genotypes with agronomic traits of interest. Thirty-six genetic accessions from half-sib families were evaluated. They were acquired from natural populations growing in two regions in Minas Gerais State, Brazil. The genotypic values were obtained based on vegetative, reproductive, and biometric data from the fruits, via mixed models, followed by genetic diversity analysis. Genetic parameter estimates were obtained using the Restricted Maximum Likelihood procedure from interactions in the mixed model equations. The study revealed high values of environmental variation between plots and varying magnitudes for $CV_{gi}$ $C V_{gi}$ , $CV_{e}$ $C V_{e}$ and $CV_{r}$ $C V_{r}$ . The progenies, either isolated or as single population sets, revealed great genetic diversity. When seeking to develop cultivars with a lower number of crossings, the progenies from the Santa Luzia-MG region proved to be suitable for initiating crossings as they presented greater genetic uniformity. However, considering the diversity and genetic value of the Luz-MG families, the following crossings are recommended: TP6 × TP8, TP6 × TP18, TP6 × TP13, TP8 × TP18 and TP13 × TP18, as they have a better content of alleles favorable to genetic improvement.