Clonal Variation and Genotype by Environment Interactions in Growth and Wood Density in Eucalyptus camaldulensis at Three Contrasting Sites in Vietnam

Kien, Nguyen D.; Jansson, Gunnar; Harwood, Chris; Almqvist, Curt

doi:10.1515/sg-2010-0003

Cited by 18 publications

(19 citation statements)

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“…Hasil serupa diungkapkan oleh Wu et al, (2013) ,9 -18,8 m dan 11,9 -12,6 cm (Wu et al, 2011). Hasil berbeda ditunjukan klon Eucalyptus hibrid umur 44 bulan di China, dengan rerata tinggi dan diameter batang adalah 14,4 m dan 11,0 cm (Wu et al, 2015) dan di Vietnam dengan tinggi pohon dan diameter batang klon E. camaldulensis umur 5 tahun adalah 10,5 -14,1 m dan 8,8 -13,4 cm (Kien, Jansson, Harwood, & Almqvist, 2010). Koefisien variasi klon Eucalyptus hibrid umur 44 bulan di China adalah 9,84% untuk tinggi pohon dan 9,91% untuk diameter batang (Wu et al, 2015).…”

Section: Pertumbuhanunclassified

“…Kerapatan kayu memperlihatkan variasi yang lebih rendah dengan rerata CV < 6% dibandingkan dengan sifat tinggi pohon dengan CV sebesar 15,8 -17,0% dan diameter batang dengan rerata CV adalah 19,2 -23,1% (Tabel 1). Hasil penelitian yang serupa terjadi di Vietnam pada klon E. camaldulensis menunjukkan variasi yang rendah pada sifat kayu dibandingkan sifat pertumbuhan (Kien et al, 2010). Secara umum sifat kayu menampilkan variasi yang lebih kecil dibandingkan dengan sifat-sifat pertumbuhan (Yang et al, 2018).…”

Section: Pertumbuhanunclassified

“…Taksiran heritabilitas sifat-sifat pertumbuhan termasuk kategori moderat, sedangkan taksiran heritabilitas kerapatan kayu (> 0,75) termasuk kategori tinggi (White et al, 2007). Taksiran heritabilitas pertumbuhan yang lebih tinggi dibandingkan penelitian ini dilaporkan oleh Kien et al (2010) yang menyebutkan taksiran heritabilitas di Vietnam pada klon E. amaldulensis umur 5 tahun di Vietnam yaitu sebesar 0,69 -0,85 (tinggi pohon) dan 0,74 -0,86 (diameter batang). Taksiran heritabilitas sifat pertumbuhan yang tinggi ditemukan juga pada klon Eucalyptus hibrid di Cina yaitu 0,73 -0,96 pada umur 51 bulan sesuai yang dilaporkan Wu et al (2011) dan 0,80 -0,86 pada umur 44 bulan (Wu et al, 2015).…”

Section: Parameter Genetikunclassified

“…Taksiran heritabilitas kerapatan kayu yang lebih rendah juga diungkapkan oleh Wu et al (2013) pada klon E. urophylla dan Yang et al (2018) pada klon E. urophylla × E. tereticornis yaitu sebesar 0,5 pada umur 8 tahun di Cina. Taksiran heritabilitas kerapatan kayu yang lebih tinggi ditemukan di Vietnam yaitu 0,93 -0,95 pada klon E. camaldulensis umur 5 tahun (Kien et al, 2010).…”

Section: Parameter Genetikunclassified

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PARAMETER GENETIK SIFAT PERTUMBUHAN DAN KERAPATAN KAYU KLON Eucalyptus pellita F. Muell. DI DUA TAPAK YANG BERBEDA DI KALIMANTAN TIMUR

Ramadan

Indrioko

Hardiyanto

2018

JPTH

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Industrial forest plantations have an important role in fulfilling the wood demand. Based on global industrial development, the forest plantations industry will increase in the following years. Eucalyptus pellita has become main species in Indonesia forest plantations because it has a short cycle and wood products are suitable to forest industry. The average productivity of E. pellita plantations in Indonesia is still low and high variation. In an effort to increase the productivity, the first step is a better understanding of genetic control on growth and basic density. This study aims to determine the genetic parameters for growth and basic density of E. pellita clones on two different sites of clonal trial. The trials are designed using RCBD. The number of clones tested in both trial was 30, 5 blocks and 25 tree/plot. The result of the study showed that the effects of clones vary greatly according the enviromental conditions. The clones-environemntal interaction of growth trait is higher than the basic density. This is in line with genetic parameters of growth trait that are less stable than the basic density. The expected genetic gain of growth trait is higher than the basic density and at the same time there was a weak genetic correlation (there is even a negative) between growth trait and basic density. Therefore carefulness is needed in selecting clones when the two traits are used as selection parameters.

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Section: Pertumbuhanunclassified

Section: Parameter Genetikunclassified

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PARAMETER GENETIK SIFAT PERTUMBUHAN DAN KERAPATAN KAYU KLON Eucalyptus pellita F. Muell. DI DUA TAPAK YANG BERBEDA DI KALIMANTAN TIMUR

Ramadan

Indrioko

Hardiyanto

2018

JPTH

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“…Entre os caracteres da madeira, são abordados tópicos relacionados à produtividade de madeira sólida, rendimento de polpação e densidade básica (HEIN et al, 2012;KIEN et al, 2010;STACKPOLE et al, 2010;WEI;BORRALHO, 1997;WENG et al, 2014;WU et al, 2013), sendo que a última foi eleita como uma das propriedades mais importantes na caracterização tecnológica (WU et al, 2011) e fundamental na determinação do poder calorífico, qualidade da polpa celulósica e na definição de aplicações estruturais (KIEN et al, 2009a;LOPES et al, 2011;PEREIRA et al, 2012).…”

Section: Introductionunclassified

Parâmetros genéticos para caracteres de crescimento, espessura de casca e densidade básica da madeira em progênies de Eucalyptus urophylla S.T. Blake

Pupin¹,

Zaruma²,

Souza³

et al. 2017

Sci. For.

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ResumoA produção volumétrica tem sido prioridade nos programas de melhoramento florestal. No entanto, é necessário que a qualidade da madeira seja considerada, para que o fornecimento da matéria prima permita aumentar a eficiência e o rendimento industrial. Dessa forma, o objetivo deste trabalho foi estimar parâ-metros genéticos, correlações genéticas e ganhos com a seleção para caracteres de crescimento (diâme-tro), espessura de casca e densidade básica da madeira de Eucalyptus urophylla. Para tanto, utilizou-se discos de madeira retirados no DAP e metade da altura comercial, provenientes de árvores desbastadas em um teste de progênies de polinização aberta com 33 genótipos e duas procedências (Rio Claro-SP e Três Lagoas-MS), localizado em Selvíria-MS. Os parâmetros genéticos foram obtidos com base no procedimento REML/BLUP. O melhor desempenho para crescimento foi verificado para Rio Claro. Não foram detectadas diferenças genéticas para densidade da madeira entre as procedências. A procedência de Três Lagoas apresentou coeficiente de variação genética > 14% (diâmetro) e forte controle genético (herdabilidade > 0,6 e acurácia > 78%). Para qualidade da madeira, Rio Claro sobressaiu-se nas estimativas de herdabilidade (> 0,6 -DBM e ECD), alcançando acurácia superior a 79%. Foram encontrados resultados contrastantes para as correlações genéticas entre as duas procedências. Para a obtenção de materiais genéticos com maior densidade da madeira, a seleção para DBM é vantajosa. Palavras-chave: melhoramento florestal, qualidade da madeira, REML/BLUP. AbstractVolumetric production has been a priority in forest breeding programs. However, it is necessary to consider wood quality for the raw material supply that increases efficiency and yield. Thus, the aim of this study was to estimate genetic parameters, genitic correlations and selection gains for growth traits (diameter), bark thickness and basic density of wood in progênies of Eucalyptus urophylla. For this, we used wood discs removed at DHB and half the commercial height, from trees thinned in an open pollination progeny with 33 genotypes and two provenances (Rio Claro-SP and Três Lagoas-MS), located in Selvíria-MS. Estimates of genetic parameters were obtained using the REML/BLUP method. The best performance for growth was found in the Rio Claro provenance. Genetic differences in wood density between the provenances were not detected. The provenance of Três Lagoas showed a coefficient of genetic variation > 14% (diameter) and strong genetic control (heritability > 0.6 and accuracy > 78%). For wood quality, Rio Claro stood out in the estimates of heritability (> 0.6 -DBM and ECD), achieving a higher accuracy of 79%. Contrasting results were found for the genetic correlation between the two sources. For obtaining genetic materials with higher density wood, the selection for DBM is advantageous.

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Genotypic variation in wood properties and growth traits of Eucalyptus hybrid clones in southern China

Guang-you

et al. 2010

New Forests

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Clonal Variation and Genotype by Environment Interactions in Growth and Wood Density in Eucalyptus camaldulensis at Three Contrasting Sites in Vietnam

Cited by 18 publications

References 16 publications

PARAMETER GENETIK SIFAT PERTUMBUHAN DAN KERAPATAN KAYU KLON Eucalyptus pellita F. Muell. DI DUA TAPAK YANG BERBEDA DI KALIMANTAN TIMUR

PARAMETER GENETIK SIFAT PERTUMBUHAN DAN KERAPATAN KAYU KLON Eucalyptus pellita F. Muell. DI DUA TAPAK YANG BERBEDA DI KALIMANTAN TIMUR

Parâmetros genéticos para caracteres de crescimento, espessura de casca e densidade básica da madeira em progênies de Eucalyptus urophylla S.T. Blake

Genotypic variation in wood properties and growth traits of Eucalyptus hybrid clones in southern China

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