SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Population genetic structure and genetic diversity levels are important issues to understand population dynamics and to guide forest management plans. The Brazil nut tree (Bertholletia excelsa Bonpl.) is an endemic species, widely distributed through Amazonian upland forests and also an important species for the local extractive economy. Our aim was to analyze the genetic structure of Brazil nut trees at both fine and large scales throughout the Amazon Basin, contributing to the knowledge base on this species and to generate information to support plans for its conservation. We genotyped individuals from nine sites distributed in five regions of the Brazilian Amazon using 11 microsatellite loci. We found an excess of heterozygotes in most populations, with...

Tipo: Artigo de periódico

Palavras-chave: Marcador microssatélite; Nuez del Brasil; Dinámica poblacional; Fitomejoramiento; Madera tropical; Marcadores genéticos; Repeticiones de microsatélite; Variación genética.; Melhoramento genético vegetal; Essência florestal; Castanha do pará; Bertholletia excelsa; Variação genética; Dinâmica populacional; Marcador genético; Plant breeding; Tropical wood; Brazil nuts; Genetic variation; Population dynamics; Genetic markers; Microsatellite repeats..

Ano: 2015

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1015836

Genomic diversity is similar between Atlantic Forest restorations and natural remnants for the native tree Casearia sylvestris Sw.

Repositório Alice

VIANA, J. P. G.; SIQUEIRA, M. V. B. M.; ARAUJO, F. L.; GRANDO, C.; SUJII, P. S.; SILVESTRE, E. de A.; NOVELLO, M.; PINHEIRO, J. B.; CAVALLARI, M. M.; BRANCALION, P. H. S.; RODRIGUES, R. R.; SOUZA, A. P. de; CATCHEN, J.; ZUCCHI, M. I..

The primary focus of tropical forest restoration has been the recovery of forest structure and tree taxonomic diversity, with limited attention given to genetic conservation. Populations reintroduced through restoration plantings may have low genetic diversity and be genetically structured due to founder effects and genetic drift, which limit the potential of restoration to recover ecologically resilient plant communities. Here, we studied the genetic diversity, genetic structure and differentiation using single nucleotide polymorphisms (SNP) markers between restored and natural populations of the native tree Casearia sylvestris in the Atlantic Forest of Brazil. We sampled leaves from approximately 24 adult individuals in each of the study sites: two...

Tipo: Artigo de periódico

Palavras-chave: SNP; Single nucleotide polymorphisms; Floresta Tropical; Casearia Sylvestris; Tropical forests.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101157

Molecular responses of coffee plants to drought stress.

Repositório Alice

MARRACCINI, P.; VIEIRA, N. G.; DUARTE, K. E.; AQUINO, S. O.; CARNEIRO, F. A.; COSTA, T. S.; SUJII, P. S.; VINECKY, F.; ALEKCEVETCH, J. C.; ALVES, G. S. C.; LEROY, T.; BELLIS, F. de; FERRÃO, M. A. G.; DAMATTA, F. M.; POT, D.; SILVA, V. A.; RODRIGUES, G. C.; ANDRADE, A. C..

With the aim to investigate the molecular mechanisms underlying drought tolerance in coffee plants of C. canephora and C. arabica, qPCR experiments identified more than 80 candidate genes (CGs) presenting differential gene expression between drought-tolerant and drought-susceptible clones/cultivars cultivated under different (with or without) irrigation conditions.

Tipo: Anais e Proceedings de eventos

Palavras-chave: Tolerância à seca; Café; Water stress; Coffea; Drought tolerance.

Ano: 2013

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/979069

Morphological and molecular characteristics do not confirm popular classification of the Brazil nut tree in Acre, Brazil.

Repositório Alice

SUJII, P. S.; FERNANDES, E. T. M. B.; AZEVEDO, V. C. R.; CIAMPI, A, Y.; MARTINS, K.; WADT, L. H. de O..

In the State of Acre, the Brazil nut tree, Bertholletia excelsa (Lecythidaceae), is classified by the local population into two types according to morphological characteristics, including color and quality of wood, shape of the trunk and crown, and fruit production. We examined thereliability of this classification by comparing morphological and molecular data of four populations of Brazil nut trees from Vale do Rio Acre in the Brazilian Amazon. For the morphological analysis, we evaluated qualitative and quantitative information of the trees, fruits, and seeds. The molecular analysis was performed using RAPD and ISSR markers, with cluster analysis. Significant differences were found between the two types of Brazil nut trees for the characters diameter at...

Tipo: Separatas

Palavras-chave: Castanheira; Classificação morfológica; Marcadores moleculares; Bertholletia Excelsa.

Ano: 2013

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/975709

Variabilidade genética em populações de pinheiro-bravo (Podocarpus lambertii) na AHE barra grande, utilizando-se marcador RAPD.

Repositório Alice

ALEGRIA, M. R. M.; SUJII, P. S.; CIAMPI, A. Y..

Tipo: Anais e Proceedings de eventos

Palavras-chave: Conservação..

Ano: 2006

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/188955

Registros recuperados: 13

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