Variación genética del índice de rajado de rollizos en Eucalyptus dunnii Maiden

López, Juan S.; Borralho, N. M. G.; López, Augusto Javier Gómez; Marcó, Martín; Harrand, Leonel

doi:10.52904/0718-4646.2016.454

Cited by 3 publications

(4 citation statements)

References 3 publications

(4 reference statements)

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“…[44][45][46]. There is information about variability in rooting and tolerance to salinity of E. grandis × E. camaldulensis hybrid [1,47]. However, there is a lack of information about the development of this eucalyptus clone in different substrate media.…”

Section: Discussionmentioning

confidence: 99%

Effect of Poultry Manure-Derived Compost on the Growth of eucalypts spp. Hybrid Clones

et al. 2022

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Interspecific hybrids of E. grandis × E. camaldulensis were generated to widen the plantation area. The aim of this study was to assess root capability and development for six different clones of eucalyptus grown in substrates made with three different composts derived from poultry manure. A factorial design was used to assess the effect of different composts on six growth variables. The analysis detected a greater effect from the genotype than the substrate. E. grandis × E. camaldulensis hybrid vegetative propagation was successful in alternative substrates formulated from composted poultry manure. GC8 was the genotype that showed the greatest differences for four the different variables among the substrates, being both the most sensitive and the one with the highest values for all parameters measured. The hybrids' vegetative propagation was determined in alternative substrates formulated from poultry manure compost. The physicochemical characteristics of substrates composed of pine bark and sawdust provided adequate conditions for the growth of eucalyptus. GC8 was the genotype most sensitive to the use of different substrates, showing significant differences in the ratio of roots/callus, radicular dry weight, and cutting dry weight. These clones might be a good option for evaluating compost-based substrates for forestry applications.

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Section: Discussionmentioning

confidence: 99%

Effect of Poultry Manure-Derived Compost on the Growth of eucalypts spp. Hybrid Clones

et al. 2022

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“…E. dunnii trees were measured for growth traits by Diameter at Breast Height at six and 20 years old (DBH6, and DBH20) and Stem Straightness at 6 years old (SS6; López et al, 2016 ; Marcó and White, 2002 ). At 20 years old, the intensity of growth stresses was evaluated by measuring the Log End Split Index (LESI20, López et al, 2016 ), and Wood basic Density (WD20, Kg/m 3 ) was estimated by water immersion. Estimates of six wood chemical properties at 20 years were obtained using Near Infrared spectroscopy (NIR) at the Instituto Superior de Agronomia (ISA, Portugal).…”

Section: Methodsmentioning

confidence: 99%

“…Despite its limited natural distribution in Australia, E. dunnii ( Maiden, 1905 ) has shown relevant genetic variability for growth, adaptation to different soils and tolerance to abiotic stresses such as frost, drought and high summer humidity, when planted as an exotic ( Darrow, 1994 ; Jovanovic et al, 2000 ; Clarke, 2009 ; Thomas et al, 2009 ; Shi et al, 2016 ). As a result of these advantages, E. dunnii plantations have been established in subtropical areas such as southern China, South Africa, South America and Australia, where it is considered to be an alternative to other species, particularly in the context of climate change ( Marcó and White, 2002 ; Marcó, 2005 ; Maseko et al, 2007 ; Hardner et al, 2016 ; López et al, 2016 ; Shi et al, 2016 ; Gallo et al, 2018 ; Resquin et al, 2019 ). However, genetic improvement of E. dunnii is still at an early stage.…”

Section: Introductionmentioning

confidence: 99%

Comparison of ddRADseq and EUChip60K SNP genotyping systems for population genetics and genomic selection in Eucalyptus dunnii (Maiden)

Aguirre,

Villalba,

García

et al. 2024

Front. Genet.

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Eucalyptus dunnii is one of the most important Eucalyptus species for short-fiber pulp production in regions where other species of the genus are affected by poor soil and climatic conditions. In this context, E. dunnii holds promise as a resource to address and adapt to the challenges of climate change. Despite its rapid growth and favorable wood properties for solid wood products, the advancement of its improvement remains in its early stages. In this work, we evaluated the performance of two single nucleotide polymorphism, (SNP), genotyping methods for population genetics analysis and Genomic Selection in E. dunnii. Double digest restriction-site associated DNA sequencing (ddRADseq) was compared with the EUChip60K array in 308 individuals from a provenance-progeny trial. The compared SNP set included 8,011 and 19,008 informative SNPs distributed along the 11 chromosomes, respectively. Although the two datasets differed in the percentage of missing data, genome coverage, minor allele frequency and estimated genetic diversity parameters, they revealed a similar genetic structure, showing two subpopulations with little differentiation between them, and low linkage disequilibrium. GS analyses were performed for eleven traits using Genomic Best Linear Unbiased Prediction (GBLUP) and a conventional pedigree-based model (ABLUP). Regardless of the SNP dataset, the predictive ability (PA) of GBLUP was better than that of ABLUP for six traits (Cellulose content, Total and Ethanolic extractives, Total and Klason lignin content and Syringyl and Guaiacyl lignin monomer ratio). When contrasting the SNP datasets used to estimate PAs, the GBLUP-EUChip60K model gave higher and significant PA values for six traits, meanwhile, the values estimated using ddRADseq gave higher values for three other traits. The PAs correlated positively with narrow sense heritabilities, with the highest correlations shown by the ABLUP and GBLUP-EUChip60K. The two genotyping methods, ddRADseq and EUChip60K, are generally comparable for population genetics and genomic prediction, demonstrating the utility of the former when subjected to rigorous SNP filtering. The results of this study provide a basis for future whole-genome studies using ddRADseq in non-model forest species for which SNP arrays have not yet been developed.

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“…En términos generales, los valores de densidad básica hallados concuerdan con los reportados en la bibliografía para los materiales analizados (p. ej. López et al, 2016;Resquin et al, 2020). La densidad básica de la madera es uno de los principales criterios de selección para genotipos de Eucalyptus destinadas a la producción de carbón, ya que una mayor densidad resulta en un aumento en la producción de carbón para el mismo volumen de madera dentro del horno, además de afectar la calidad para diversos propósitos y facilitar su manejo (Pereira et al, 2012).…”

Section: Discusión Características Dendroenergéticas De La Maderaunclassified

Caracterización dendroenergética de la madera y el carbón de diferentes materiales genéticos del género Eucalyptus

Barotto,

Gauna,

Tonello

et al. 2024

revagro

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En un contexto de cambio climático y mayor demanda de energía, la biomasa, en particular la leña y el carbón vegetal, constituye una alternativa valiosa para el reemplazo de combustibles fósiles, con un mejor balance de emisiones gaseosas y un gran potencial en nuestro país. En particular, el género Eucalyptus puede ser muy relevante en este proceso, ya que constituye el segundo género forestal a nivel nacional, siendo el noreste de Entre Ríos uno de sus mayores núcleos productivos. Una correcta caracterización de los materiales disponibles en nuestro país contribuirá a su valorización para diversos fines, entre los que se destaca el dendroenergético. El objetivo del presente trabajo fue caracterizar y comparar diversas propiedades dendroenergéticas de la madera del fuste y el carbón de diferentes materiales del género Eucalyptus, incluyendo especies, híbridos y clones de siete años de edad. Con respecto a la madera, los materiales testeados se ubicaron dentro del rango de maderas livianas y semipesadas, cuyas características analizadas (contenido de cenizas, poder calorífico, rendimiento de carbonización) presentaron órdenes de magnitud similares a los reportados por trabajos referentes a este género botánico. En cuanto al carbón, se encontraron resultados contrastantes en función de la variable considerada (densidad aparente relativa, cenizas, volátiles, carbono fijo y poder calorífico). En función de ello, se remarca la necesidad de continuar con los análisis, empleando diferentes protocolos, a fin de corroborar los valores obtenidos para estas características, las cuales resultan de gran importancia para establecer el potencial dendroenergético para su uso doméstico e industrial.

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Variación genética del índice de rajado de rollizos en Eucalyptus dunnii Maiden

Cited by 3 publications

References 3 publications

Effect of Poultry Manure-Derived Compost on the Growth of eucalypts spp. Hybrid Clones

Effect of Poultry Manure-Derived Compost on the Growth of eucalypts spp. Hybrid Clones

Comparison of ddRADseq and EUChip60K SNP genotyping systems for population genetics and genomic selection in Eucalyptus dunnii (Maiden)

Caracterización dendroenergética de la madera y el carbón de diferentes materiales genéticos del género Eucalyptus

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