Genetic diversity in populations of Acrocomia aculeata (Arecaceae) in the northern region of Minas Gerais, Brazil

Abstract

ABSTRACT. Macaúba (Acrocomia aculeata) is a palm of economic importance, widely distributed in natural forests from Mexico to Uruguay. We analyzed the genetic diversity of populations of macaúba (A. aculeata) in the northern region of the State of Minas Gerais, Brazil. Young leaves from 10 macaúba individuals encompassing 49 genotypes of macaúba were collected from Montes Claros, Itacambira, Brasília de Minas, Mirabela, and Grão Mogol. After extraction and amplification of samples, the amplified fragments were separated by electrophoresis. We found high levels of genetic diversity within the populations. Genetic diversity indices were high, except in the Itacambira and Mirabela populations. Results show that Mirabela and Itacambira populations can require conservation strategies because they present lower values of genetic diversity.

Genetic diversity of the Neotropical tree Hancornia speciosa Gomes in natural populations in Northeastern Brazil

“…The absolute values were 0.207 (Region 1), 0.197 (Region 2), and 0.229 (Region 3). These results are close to those obtained in studies with dominant markers in natural populations; for example, 0.163-0.236 for Eugenia dysenterica (Zucchi, 2002), 0.25-0.29 to Polylepis australis (Julio et al, 2008), 0.11-0.26 and 0.25-o 0.42 for Hancornia speciosa (Costa et al, 2011;Martins et al, 2012), 0.30-0.42 for Acrocomia aculeata (Oliveira et al, 2012), and 0.24-0.27 for Metrodorea nigra (Moraes Filho et al, 2015). In addition, these results are much higher than those obtained for autogamous species such as Theobroma speciosum (Ĥ E = 0.051-0.095; Giustina et al, 2014), and Coffea arabica (Ĥ E = 0.05-0.15; Aga et al, 2005).…”

“…In addition, these results are much higher than those obtained for autogamous species such as Theobroma speciosum (Ĥ E = 0.051-0.095; Giustina et al, 2014), and Coffea arabica (Ĥ E = 0.05-0.15; Aga et al, 2005). Dominant markers have been frequently used in the study of plant diversity, and the PLP is one of the most common measures used as an indicator of genetic diversity in these species (Cardoso et al, 1998;Xia et al, 2007;Julio et al, 2008;Oliveira et al, 2012;Zucchi, 2012;Zhang et al, 2013;Moraes Filho et al, 2013. The ISSR method revealed considerable polymorphism among the analyzed individuals.…”

Genetic variability in accessions of the acerola germplasm bank of Universidade Federal Rural de Pernambuco, Brazil

“…The H E values in the present study were similar to those in studies with natural populations, e.g., 0.27 to 0.33 for T. pallida (Zimback et al, 2004), 0.25 to 0.29 for Polylepis australis (Julio et al, 2008), 0.11 to 0.26 for Hancornia speciosa (Costa et al, 2011) and 0.25 to 0.42 for Acrocomia aculeata (Oliveira et al, 2012), suggesting a strong genetic basis.…”

“…The percentage of polymor phic loci has been used as a genetic diversity measure in plant populations through the use of dominant markers (Xia et al, 2007;Julio et al, 2008;Kumar et al, 2010;Oliveira et al, 2012). The highest values were observed in accessions from Bahia State (82.42%), followed by Pará (67%) and Pernambuco States (47.25%).…”

Fragmentation effects and genetic diversity of the key semidecidual forest species Metrodorea nigra in Southwestern Brazil

“…High levels of genetic diversity in fragmented natural populations have also been reported in many tropical species such as Caesalpinia echinata (Cardoso et al, 1998), Acrocomia aculeata (Oliveira et al, 2012), Trichilia pallida (Zimback et al, 2004), and Cariniana estrellensis (Guidugli, 2011).…”