Seleção genética em progênies de Eucalyptus camaldulensis em área de cerrado matogrossense

Azevedo, Luana Pâmella de Almeida; Costa, Reginaldo Brito da; Martinez, Diego Tyszka; Filho, Antonio de Arruda Tsukamoto; Brondani, Gilvano Ebling; Baretta, Maísa Caroline; Ajala, Willian Vieira

doi:10.1590/0103-8478cr20131557

Cited by 10 publications

(9 citation statements)

References 10 publications

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“…These results indicate that selection based on progeny means should be more efficient than selection within progenies, considering the same selection intensity. These findings are consistent and similar to those obtained by [19], [27] and [2]. Higher estimates of ℎ 2 would indicate a selection within families, as highlighted by [20] and [22].…”

Section: Resultssupporting

confidence: 92%

“…Furthermore, they presented estimates lower than those of heritability at the level of family mean, which according to [19], implies that the selection in this selection unit should provide greater genetic gains. In Figures 1-4, 1-F are also presented the behavior for parameter estimates ℎ 2 , ℎ 2 , and , which were similar to ℎ 2 .…”

Section: Resultsmentioning

confidence: 77%

“…According to [2], variations in this genetic parameter are common and may be associated with the age of evaluation, the site and experimental precision of the experiment. For all the investigated genetic parameters, an increase in the amplitude of the estimates was verified.…”

Section: Resultsmentioning

confidence: 99%

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Plant stand failures effect in genetic parameters estimation procedure in Eucalyptus sp.

Frias¹,

Oliveira²,

Dellaqua³

et al. 2020

Int J Innov Educ Res

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The objective of this work was to verify the influence of the percentage of failures in a forest genetics experiment in the estimation of genetic parameters. The study consisted in the evaluation of two experiments of full‑sib families under randomized complete block design with three replicates conducted in the state of Minas Gerais, Brazil. The experiment I was evaluated in January 2002, with approximately 60 months of age. The experiment II was evaluated in January 2003, with 45 months of age. In both experiments, the evaluations consisted of the measurement of the diameter at breast height and plant height. For all the investigated genetic parameters, an increase in the amplitude of the estimates was verified due to the increase in the number of experimental failures. Variances and negative heritabilities were detected, from 35% of failure, indicating that in such cases, this proportion of failure may be problematic to estimate genetic values, to estimate the gain with the selective process and for make decision.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 77%

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Plant stand failures effect in genetic parameters estimation procedure in Eucalyptus sp.

Frias¹,

Oliveira²,

Dellaqua³

et al. 2020

Int J Innov Educ Res

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“…Silva et al (1992) studied five Eucalyptus species in Lassance (Minas Gerais, Brazil) and found that E. camaldulensis had the greatest height increase rate. Azevedo et al, (2015) reported that E. calmaldulensis adapted well to the Cerrado soils in the state of Mato Grosso.…”

Section: Monthly Growth Of the Eucalyptus Species/clonementioning

confidence: 99%

Influence of climate variables in the initial growth of Corymbia citriodora and different species of eucalyptus

Poersch¹,

Filho²,

Miguel³

et al. 2017

Biosci. J.

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ABSTRACT:This work aimed to analyze possible differences in growth patterns on Eucalyptus species and to identify the determinants climatic variables on the growth. We evaluated six Eucalyptus species (Eucalyptus camaldulensis, Eucalyptus grandis, Eucalyptus urophylla, Eucalyptus saligna, Corymbia citriodora and Eucalyptus globulus) and a Clone (GG100) implanted in an experimental arrangement of randomized blocks. We collected the collar diameter and height of all plants monthly in the course of a year, in addition to climate data (minimum temperature, maximum and rainfall). Sequentially, we obtained the correlations between the current monthly increments (collar diameter and height) and climatic variables (minimum temperature, maximum and rainfall). The Current Monthly Increment of the Collar diameter (CMI D) was not correlated to the climatic variables evaluated and the Current Monthly Increment of the Height (CMI H) was strongly correlated to the minimum temperature for the species E. camaldulensis, C. citriodora, E. saligna, E. urophylla, E. grandis and the GG100 Clone. The Rainfall showed positive correlations regarding the CMI H only for the Clone (GG100) and E. urophylla. Finally, the species E. camaldulensis, E. urophylla, E. grandis, E. saligna presented a mortality rate under 10% which is recommended according to the silvicultural criteria.

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“…Neste sentido, o estudo e a caracterização das propriedades físicas e mecânicas da madeira de espécies florestais de reflorestamentos é muito importante, principalmente ao se considerar o estado de Mato Grosso, quem ainda está em fase inicial de implantação de grandes áreas de plantios de eucalipto (Azevedo et al 2015). Outro fator relevante é a idade de corte das árvores, sendo que a maioria dos estudos são realizados com a madeira adulta.…”

Section: Introductionunclassified

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

Serenine

Melo

Castro³

et al. 2019

ADV. FOR. SCI.

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Resumo O gênero Eucalyptus incluem diversas espécies importantes para a silvicultura florestal do Brasil. Além dessas, os híbridos de Eucalyptus spp. vem apresentando elevado potencial para uso estrutural, porém muitas de suas propriedades ainda são desconhecidas, em especial de madeiras oriundas de árvores mais jovens. Logo, a caracterização tecnológica da sua madeira é de grande importância. O objetivo desse trabalho foi avaliar as propriedades tecnológicas da madeira de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla) com cinco anos de idade, plantado na região norte do estado de Mato Grosso. Para isso foram coletadas 10 árvores, sendo retirados oito corpos de prova de cada indivíduo, as quais foram avaliadas suas propriedades físicas e mecânicas. Concluiu-se que o híbrido clonal estudado se enquadra dentro da classe C40 da norma brasileira regulamentadora de estruturas de madeiras. Palavras-chave: Tecnologia da madeira, Compressão paralela, Caracterização simplificada.

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Seleção genética em progênies de Eucalyptus camaldulensis em área de cerrado matogrossense

Abstract: RESUMO O presente trabalho objetivou estimar parâmetros, correlações e ganhos genéticos para caracteres de crescimento e forma, em um teste de progênies de

Cited by 10 publications

References 10 publications

Plant stand failures effect in genetic parameters estimation procedure in Eucalyptus sp.

Plant stand failures effect in genetic parameters estimation procedure in Eucalyptus sp.

Influence of climate variables in the initial growth of Corymbia citriodora and different species of eucalyptus

Qualidade da madeira juvenil de um híbrido clonal (Eucalyptus grandis x Eucalyptus urophylla – H13)

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