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| SOUZA, L. M. de; LE GUEN, V.; CERQUEIRA-SILVA, C. B. M.; SILVA, C. C.; MANTELLO, C. C.; CONSON, A. R. O.; VIANNA, J. P. G.; ZUCCHI, M. I.; SCALOPPI JUNIOR, E. J.; FIALHO, J. de F.; MORAES, M. L. T. de; GONÇALVES, P. de S.; SOUZA, A. P. de. |
| Abstract - The rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] is the only plant species worldwide that is cultivated for the commercial production of natural rubber. This study describes the genetic diversity of the Hevea spp. complex that is available in the main ex situ collections of South America, including Amazonian populations that have never been previously described. Genetic data were analyzed to determine the genetic structure of the wild populations, quantify the allelic diversity and suggest the composition of a core collection to capture the maximum genetic diversity within a minimal sample size. A total of 1,117 accessions were genotyped with 13 microsatellite markers. We identified a total of 408 alleles, 319 of which... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Hevea brasiliensis; Natural rubber; Estrutura genética; Genetic structure. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1035994 |
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| SILVA, C. C.; MANTELLO, C. C.; CAMPOS, T. de; SOUZA, L. M.; GONÇALVES, P. S.; SOUZA, A. P.. |
| Hevea brasiliensis is a native species of the Amazon Basin of South America and the primary source of natural rubber worldwide. Due to the occurrence of South American Leaf Blight disease in this area, rubber plantations have been extended to suboptimal regions. Rubber tree breeding is time-consuming and expensive, but molecular markers can serve as a tool for early valuation, thus reducing time and costs. In this work, we constructed six different cDNA libraries with the aim of developing gene-targeted molecular markers for the rubber tree. A total of 8,263 reads were assembled, generating 5,025 unigenes that were analyzed; 912 expressed sequence tags (ESTs) represented new transcripts, and two sequences were highly up-regulated by cold stress. These... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Marcador SNP; Rubber tree; Caucho; Marcador microssatélite; Biblioteca cDNA; CDNA library; Melhoramento genético vegetal; Seringueira; Hevea brasiliensis; Marcador genético; DNA; Plant breeding; Genetic markers; Microsatellite repeats; Fitomejoramiento; Marcadores genéticos; Repeticiones de microsatélite. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/988256 |
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| SOUZA, L. M. de; SANTOS, L. H. B. dos; ROSA, J. R. B. F.; SILVA, C. C. da; MANTELLO, C. C.; CONSON, A. R. O.; SCALOPPI JUNIOR, E. J.; FIALHO, J. de F.; MORAES, M. L. T. de; GONÇALVES, P. de S.; MARGARIDO, G. R. A.; GARCIA, A. A. F.; LE GUEN, V.; SOUZA, A. P. de. |
| Abstract: Among rubber tree species, which belong to the Hevea genus of the Euphorbiaceae family, Hevea brasiliensis (Willd. ex Adr.de Juss.) Muell. Arg. is the main commercial source of natural rubber production worldwide. Knowledge of the population structure and linkage disequilibrium (LD) of this species is essential for the efficient organization and exploitation of genetic resources. Here, we obtained single-nucleotide polymorphisms (SNPs) using a genotyping-by-sequencing (GBS) approach and then employed the SNPs for the following objectives: (i) to identify the positions of SNPs on a genetic map of a segregating mapping population, (ii) to evaluate the population structure of a germplasm collection, and (iii) to detect patterns of LD decay among... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Seringueira; Hevea Brasiliensis; Comportamento de Variedade; População de Planta; Variação Genética. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1094508 |
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