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Registro Completo |
Biblioteca(s): |
Embrapa Florestas; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
16/05/2018 |
Data da última atualização: |
21/11/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
RESENDE, R. T.; SOARES, A. A. V.; FORRESTER, D. I.; MARCATTI, G. E.; SANTOS, A. R. dos; TAKAHASHI, E. K.; SILVA, F. F. e; GRATTAPAGLIA, D.; RESENDE, M. D. V. de; LEITE, H. G. |
Afiliação: |
RAFAEL T. RESENDE, UFV; ALVARO A. V. SOARES, UFRA; DAVID I. FORRESTER, SWISS FEDERAL INSTITUTE FOR FOREST, SWITZERLAND; GUSTAVO E. MARCATTI, UFSJ-CSL; ALEXANDRE R. DOS SANTOS, UFES; ELIZABETE K. TAKAHASHI, CENIBRA S.A.; FABYANO F. E SILVA, UFV; DARIO GRATTAPAGLIA, Cenargen; MARCOS DEON VILELA DE RESENDE, CNPF; HELIO G. LEITE, UFV. |
Título: |
Environmental uniformity, site quality and tree competition interact to determine stand productivity of clonal Eucalyptus. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Forest Ecology and Management, v. 410, p. 76-83, Feb. 2018. |
DOI: |
10.1016/j.foreco.2017.12.038 |
Idioma: |
Inglês |
Conteúdo: |
The major determinants of productivity in Eucalyptus plantations include the site productive capacity, local environmental uniformity, and the tree genetics, which impact their growth potential and competitiveness. While these factors have received a lot of attention individually, less attention has been given to the relative importance of these factors and the interactions between them. We examined these factors and their interactions using eight experiments located along a gradient in site productivity, consisting of 54 clonal genotypes (Eucalyptus urophylla × E. grandis hybrids) at two plant spacings (3 × 3.33 and 3 × 2 m). Stand productivity was quantified as the mean annual increment at age 6 years (m3 ha?1 year?1). Site productive capacity was represented using a site index based on mean dominant height at age 6 years. Environmental uniformity was calculated from within-plot variability in growth of very young stands using residual spatial autocorrelation. The competitive ability of a given phenotype was calculated as the percent loss in potential growth due to neighbor competition. Productivity increased with all variables but site quality had the greatest effect, followed by environmental uniformity and then competitive ability, with corresponding changes in productivity of about 30, 20 and 10 m3 ha?1 year?1, respectively, across the range of the given variable. With higher environmental heterogeneity, competition among genotypes increased, especially at dense spacing, showing that in such situations, highly competitive genotypes may display productivities similar to the less competitive genotypes in uniform environments. Experimental plots distributed across site quality and uniformity gradients provide opportunity for greater genetic differentiation than plots covering more homogeneous environments, reinforcing the recommendation of establishing genetic tests in locations with extreme site qualities. Our work suggests that the G × E interaction is linked to site quality and, to a lesser degree, to the local environmental uniformity. This work shows the value of adopting environmental gradient-based approaches in tree genetic testing and clone recommendation as a way to more accurately match genotypes to specific sites. MenosThe major determinants of productivity in Eucalyptus plantations include the site productive capacity, local environmental uniformity, and the tree genetics, which impact their growth potential and competitiveness. While these factors have received a lot of attention individually, less attention has been given to the relative importance of these factors and the interactions between them. We examined these factors and their interactions using eight experiments located along a gradient in site productivity, consisting of 54 clonal genotypes (Eucalyptus urophylla × E. grandis hybrids) at two plant spacings (3 × 3.33 and 3 × 2 m). Stand productivity was quantified as the mean annual increment at age 6 years (m3 ha?1 year?1). Site productive capacity was represented using a site index based on mean dominant height at age 6 years. Environmental uniformity was calculated from within-plot variability in growth of very young stands using residual spatial autocorrelation. The competitive ability of a given phenotype was calculated as the percent loss in potential growth due to neighbor competition. Productivity increased with all variables but site quality had the greatest effect, followed by environmental uniformity and then competitive ability, with corresponding changes in productivity of about 30, 20 and 10 m3 ha?1 year?1, respectively, across the range of the given variable. With higher environmental heterogeneity, competition among genotypes increased, especially at dense spacin... Mostrar Tudo |
Palavras-Chave: |
Clonal forest; Eucalyptus sp; Mixed models; Plant based indexes; Random regression; Structural diversity. |
Thesaurus Nal: |
Breeding; Eucalyptus; Forest management; Phenotypic plasticity. |
Categoria do assunto: |
-- G Melhoramento Genético |
Marc: |
LEADER 03366naa a2200361 a 4500 001 2093538 005 2018-11-21 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1016/j.foreco.2017.12.038$2DOI 100 1 $aRESENDE, R. T. 245 $aEnvironmental uniformity, site quality and tree competition interact to determine stand productivity of clonal Eucalyptus.$h[electronic resource] 260 $c2018 520 $aThe major determinants of productivity in Eucalyptus plantations include the site productive capacity, local environmental uniformity, and the tree genetics, which impact their growth potential and competitiveness. While these factors have received a lot of attention individually, less attention has been given to the relative importance of these factors and the interactions between them. We examined these factors and their interactions using eight experiments located along a gradient in site productivity, consisting of 54 clonal genotypes (Eucalyptus urophylla × E. grandis hybrids) at two plant spacings (3 × 3.33 and 3 × 2 m). Stand productivity was quantified as the mean annual increment at age 6 years (m3 ha?1 year?1). Site productive capacity was represented using a site index based on mean dominant height at age 6 years. Environmental uniformity was calculated from within-plot variability in growth of very young stands using residual spatial autocorrelation. The competitive ability of a given phenotype was calculated as the percent loss in potential growth due to neighbor competition. Productivity increased with all variables but site quality had the greatest effect, followed by environmental uniformity and then competitive ability, with corresponding changes in productivity of about 30, 20 and 10 m3 ha?1 year?1, respectively, across the range of the given variable. With higher environmental heterogeneity, competition among genotypes increased, especially at dense spacing, showing that in such situations, highly competitive genotypes may display productivities similar to the less competitive genotypes in uniform environments. Experimental plots distributed across site quality and uniformity gradients provide opportunity for greater genetic differentiation than plots covering more homogeneous environments, reinforcing the recommendation of establishing genetic tests in locations with extreme site qualities. Our work suggests that the G × E interaction is linked to site quality and, to a lesser degree, to the local environmental uniformity. This work shows the value of adopting environmental gradient-based approaches in tree genetic testing and clone recommendation as a way to more accurately match genotypes to specific sites. 650 $aBreeding 650 $aEucalyptus 650 $aForest management 650 $aPhenotypic plasticity 653 $aClonal forest 653 $aEucalyptus sp 653 $aMixed models 653 $aPlant based indexes 653 $aRandom regression 653 $aStructural diversity 700 1 $aSOARES, A. A. V. 700 1 $aFORRESTER, D. I. 700 1 $aMARCATTI, G. E. 700 1 $aSANTOS, A. R. dos 700 1 $aTAKAHASHI, E. K. 700 1 $aSILVA, F. F. e 700 1 $aGRATTAPAGLIA, D. 700 1 $aRESENDE, M. D. V. de 700 1 $aLEITE, H. G. 773 $tForest Ecology and Management$gv. 410, p. 76-83, Feb. 2018.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Trigo. |
Data corrente: |
16/06/1994 |
Data da última atualização: |
26/11/2015 |
Tipo da produção científica: |
Documentos |
Autoria: |
WIETHÖLTER, S.; CIPRANDI, M. A. O. |
Título: |
Resposta da cultura da soja a potassio e relações entre fatores da planta e do solo. |
Ano de publicação: |
1990 |
Fonte/Imprenta: |
In: SOJA: resultados de pesquisa 1989-1990. Passo Fundo: EMBRAPA-CNPT, 1990. |
Páginas: |
p. 100-107. |
Série: |
(EMBRAPA-CNPT. Documentos, 3). |
Idioma: |
Português |
Notas: |
Trabalho apresentado na XVIII Reunião de Pesquisa de Soja da Região Sul, Passo Fundo, 1990. |
Palavras-Chave: |
Availability; Brasil; Disponibilidade; Economic aspect; Grain; Rendimento de grao; Retorno economico; Rio Grande do Sul; Soybean; Yield. |
Thesagro: |
Potássio; Soja; Solo. |
Thesaurus NAL: |
Brazil; potassium; soil. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/133987/1/ID13111-1989-1990sojaresultados-p100-107.pdf
|
Marc: |
LEADER 01016naa a2200349 a 4500 001 1824896 005 2015-11-26 008 1990 bl uuuu u00u1 u #d 100 1 $aWIETHÖLTER, S. 245 $aResposta da cultura da soja a potassio e relações entre fatores da planta e do solo. 260 $c1990 300 $ap. 100-107. 490 $a(EMBRAPA-CNPT. Documentos, 3). 500 $aTrabalho apresentado na XVIII Reunião de Pesquisa de Soja da Região Sul, Passo Fundo, 1990. 650 $aBrazil 650 $apotassium 650 $asoil 650 $aPotássio 650 $aSoja 650 $aSolo 653 $aAvailability 653 $aBrasil 653 $aDisponibilidade 653 $aEconomic aspect 653 $aGrain 653 $aRendimento de grao 653 $aRetorno economico 653 $aRio Grande do Sul 653 $aSoybean 653 $aYield 700 1 $aCIPRANDI, M. A. O. 773 $tIn: SOJA: resultados de pesquisa 1989-1990. Passo Fundo: EMBRAPA-CNPT, 1990.
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