Seed germination and estimates of genetic parameters of promising macaw palm (Acrocomia aculeata) progenies for biofuel production

Berton, Luiz Henrique Chorfi; Filho, Joaquim Adelino de Azevedo; Siqueira, Walter José; Colombo, Carlos Augusto

doi:10.1016/j.indcrop.2013.09.012

Cited by 30 publications

(32 citation statements)

References 29 publications

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“…Variability in seed germination among accession groups was observed, and similar results (i.e., variation among individuals) were found for other palm trees (Berton, Filho, Siqueira, & Colombo, 2013;Silva-Cardoso & Souza, 2017).…”

Section: Resultssupporting

confidence: 81%

Euterpe edulis seed germination parameters and genotype selection

et al. 2019

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The palm tree juçara (Euterpe edulis Mart) is considered one of the most important and threatened native species in the Atlantic Forest. The search for juçara seeds (Euterpe edulis Martius) has increased, generating a need for technologies favorable to their production, quality and conservation. The aim of this study was to describe the seed germination patterns of 45 juçara accessions by using a nonlinear model to examine the behavior of these patterns and select superior genotypes. After clustering 45 juçara accessions into four groups, four nonlinear models, namely, the logistic, Gompertz, von Bertalanffy and Weibull models, were tested based on their fit for each group of accessions. The Gompertz model presented the best fit to describe the germination growth curve of E. edulis seeds. Groups 3 and 4 presented the highest daily germination rates and were considered the most vigorous. Analysis of deviance was performed, revealing genetic variability among the genotypes in terms of seed germination and vigor. It was possible to find a nonlinear model that best explained our data, and this model may also be a promising model for other palm tree species. It is possible to select genotypes based on the characters we analyzed, due to the elevated genetic variability.

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Section: Resultssupporting

confidence: 81%

Euterpe edulis seed germination parameters and genotype selection

et al. 2019

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“…Due to its attractive features, the macaw palm domestication, genetic breeding and development of commercial plantations have encouraged financial investments in basic research, biotechnology and industry. Studies in several areas have been carried out with this purpose, including ecophysiology (Pires et al 2013), mating system (Lanes et al 2016), vegetative development (Berton et al 2013;Machado et al 2016), fruit development (Montoya et al 2016), phenotypic diversity (Ciconini et al 2013;Lanes et al 2015;Conceição et al 2015;Coser et al 2016) and biotechnological applications (Moura et al 2009;Luis and Scherwinski-Pereira 2014;Padilha et al 2015).…”

Section: Introductionmentioning

confidence: 99%

The complete plastome of macaw palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] and extensive molecular analyses of the evolution of plastid genes in Arecaceae

Lopes

Pacheco

Nimz

et al. 2018

Planta

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The plastome of macaw palm was sequenced allowing analyses of evolution and molecular markers. Additionally, we demonstrated that more than half of plastid protein-coding genes in Arecaceae underwent positive selection. Macaw palm is a native species from tropical and subtropical Americas. It shows high production of oil per hectare reaching up to 70% of oil content in fruits and an interesting plasticity to grow in different ecosystems. Its domestication and breeding are still in the beginning, which makes the development of molecular markers essential to assess natural populations and germplasm collections. Therefore, we sequenced and characterized in detail the plastome of macaw palm. A total of 221 SSR loci were identified in the plastome of macaw palm. Additionally, eight polymorphism hotspots were characterized at level of subfamily and tribe. Moreover, several events of gain and loss of RNA editing sites were found within the subfamily Arecoideae. Aiming to uncover evolutionary events in Arecaceae, we also analyzed extensively the evolution of plastid genes. The analyses show that highly divergent genes seem to evolve in a species-specific manner, suggesting that gene degeneration events may be occurring within Arecaceae at the level of genus or species. Unexpectedly, we found that more than half of plastid protein-coding genes are under positive selection, including genes for photosynthesis, gene expression machinery and other essential plastid functions. Furthermore, we performed a phylogenomic analysis using whole plastomes of 40 taxa, representing all subfamilies of Arecaceae, which placed the macaw palm within the tribe Cocoseae. Finally, the data showed here are important for genetic studies in macaw palm and provide new insights into the evolution of plastid genes and environmental adaptation in Arecaceae.

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“…Few studies have estimated the genetic parameters of A. aculeata (Manfio et al, 2012;Berton et al, 2013). However, no studies have investigated individual heritability and average heritability levels related to traits such as precocity (PREC), total of spathes (TS), diameter at breast height (DBH), height of the first spathe (HFS), and canopy area (CA), which are main features in the initial stage of selection for the crop ideotype.…”

Section: Introductionmentioning

confidence: 99%

Breeding of Acrocomia aculeata using genetic diversity parameters and correlations to select accessions based on vegetative, phenological, and reproductive characteristics

et al. 2016

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ABSTRACT. Macaw palm (Acrocomia aculeata) is a promising species for use in biofuel production, and establishing breeding programs is important for the development of commercial plantations. The aim of the present study was to analyze genetic diversity, verify correlations between traits, estimate genetic parameters, and select different accessions of A. aculeata in the Macaw Palm Germplasm Bank located in Universidade Federal de Viçosa, to develop a breeding program for this species. Accessions were selected based on precocity (PREC), total spathe (TS), diameter at breast height (DBH), height of the first spathe (HFS), and canopy area (CA). The traits were evaluated in 52 accessions during the 2012/2013 season and analyzed by restricted estimation maximum likelihood/best linear unbiased predictor procedures. Genetic diversity resulted in the formation of four groups by Tocher's clustering method. The correlation analysis showed it was possible to have indirect and early selection for the traits PREC and DBH. Estimated genetic parameters strengthened the genetic variability verified by cluster analysis. Narrow-sense heritability was classified as moderate (PREC, TS, and CA) to high (HFS and DBH), resulting in strong genetic control of the traits and success in obtaining genetic gains by selection. Accuracy values were classified as moderate (PREC and CA) to high (TS, HFS, and DBH), reinforcing the success of the selection process. Selection of accessions for PREC, TS, and HFS by the rank-average method permits selection gains of over 100%, emphasizing the successful use of the accessions in breeding programs and obtaining superior genotypes for commercial plantations.

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Seed germination and estimates of genetic parameters of promising macaw palm (Acrocomia aculeata) progenies for biofuel production

Cited by 30 publications

References 29 publications

Euterpe edulis seed germination parameters and genotype selection

Euterpe edulis seed germination parameters and genotype selection

The complete plastome of macaw palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] and extensive molecular analyses of the evolution of plastid genes in Arecaceae

Breeding of Acrocomia aculeata using genetic diversity parameters and correlations to select accessions based on vegetative, phenological, and reproductive characteristics

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