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| Registros recuperados: 10 | |
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| Silva,Jorge Alberto Gonçalves da; Costa,Paulo Mafra de Almeida; Marconi,Thiago Gibbin; Barreto,Everton Jean da Silva; Solís-Gracia,Nora; Park,Jon-Won; Glynn,Neil Charles. |
| ABSTRACT: Among the species related to sugarcane, Saccharum spontaneum (L.) is a wild species with the greatest potential as a source of genetic variation to cope with biomass production in harsh environments. Due to its high yield, early vigor, ratooning ability, low input requirements and tolerance to various biotic and abiotic stresses, sugarcane breeders have shown interest in its contribution, as a donor of genes, to the development of high biomass energy canes. The conservation, evaluation and utilization of the genetic variability of S. spontaneum available in germplasm collections are critical for breeding, but, given the aggressive rhizomatous growth habit and the ability to propagate via seed dispersal, S. spontaneum is classified as a noxious... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molecular markers; Yield; Bioenergy; Abiotic stress; Core collection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400329 |
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| BORBA, T. C. de O.; BRONDANI, R. P. V.; BRESEGHELLO, F.; COELHO, A. S. G.; MENDONÇA, J. A.; RANGEL, P. H. N.; BRONDANI, C.. |
| Association analysis was applied to a panel of accessions of Embrapa Rice Core Collection (ERiCC) with 86 SSR and field data from two experiments. A clear subdivision between lowland and upland accessions was apparent, thereby indicating the presence of population structure. Thirty-two accessions with admixed ancestry were identified through structure analysis, these being discarded from association analysis, thus leaving 210 accessions subdivided into two panels. The association of yield and grain-quality traits with SSR was undertaken with a mixed linear model, with markers and subpopulation as fixed factors, and kinship matrix as a random factor. Eight markers from the two appraised panels showed significant association with four different traits,... |
| Tipo: Artigo de periódico |
Palavras-chave: Association analysis; Core collection; Genetic structure; Arroz; Oryza sativa; Recurso genético; Germoplasma; Rice; Germplasm conservation. |
| Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/862017 |
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| Borba,Tereza Cristina de Oliveira; Brondani,Rosana Pereira Vianello; Breseghello,Flávio; Coelho,Alexandre Siqueira Guedes; Mendonça,João Antônio; Rangel,Paulo Hideo Nakano; Brondani,Claudio. |
| Association analysis was applied to a panel of accessions of Embrapa Rice Core Collection (ERiCC) with 86 SSR and field data from two experiments. A clear subdivision between lowland and upland accessions was apparent, thereby indicating the presence of population structure. Thirty-two accessions with admixed ancestry were identified through structure analysis, these being discarded from association analysis, thus leaving 210 accessions subdivided into two panels. The association of yield and grain-quality traits with SSR was undertaken with a mixed linear model, with markers and subpopulation as fixed factors, and kinship matrix as a random factor. Eight markers from the two appraised panels showed significant association with four different traits,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Association analysis; Core collection; Genetic structure. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300023 |
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| VALDISSER, P. A. M. R.; PEREIRA, W. J.; ALMEIDA FILHO, J. E.; MÜLLER, B. S. F.; COELHO, G. R. C.; MENEZES, I. P. P. de; VIANNA, J. P. G.; ZUCCHI, M. I.; LANNA, A. C.; COELHO, A. S. G.; OLIVEIRA, J. P. de; MORAES, A. da C.; BRONDANI, C.; VIANELLO, R. P.. |
| Background: Common bean is a legume of social and nutritional importance as a food crop, cultivated worldwide especially in developing countries, accounting for an important source of income for small farmers. The availability of the complete sequences of the two common bean genomes has dramatically accelerated and has enabled new experimental strategies to be applied for genetic research. DArTseq has been widely used as a method of SNP genotyping allowing comprehensive genome coverage with genetic applications in common bean breeding programs. Results: Using this technology, 6286 SNPs (1 SNP/86.5 Kbp) were genotyped in genic (43.3%) and non-genic regions (56. 7%). Genetic subdivision associated to the common bean gene pools (K = 2) and related to grain... |
| Tipo: Artigo de periódico |
Palavras-chave: Diversity arrays technology; Diversity analysis; Loci under selection; Core collection; Feijão; Phaseolus vulgaris; Genética vegetal; Linkage disequilibrium; Genotyping; Single nucleotide polymorphism. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076278 |
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| Paredes C,Mario; Becerra V,Viviana; Tay U,Juan. |
| The current Chilean bean (Phaseolus vulgaris L.) collection is about 1110 accessions. To facilitate the characterization of this germplasm a core collection of 246 accessions was formed. Little information exists about the mineral content and other quality traits for those bean genotypes. This information could be useful to determine their quality and to promote its consumption. The objective of this work was to evaluate the variability for macro and micronutrients of a representative bean sample from a Chilean core collection and to compare them with representatives from other races. The results indicated the presence of a wide variability for some macro and micronutrients, such as N, Fe, and Zn. The protein content varied from 183.5 to 259.7 g kg-1, Fe... |
| Tipo: Journal article |
Palavras-chave: Race Chile; Macronutrients; Micronutrients; Core collection. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400002 |
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| SANTOS-GARCIA, M. O.; TOLEDO-SILVA, G. de; SASSAKI, R. P.; FERREIRA, T. H.; RESENDE, R. M. S.; CHIARI, L.; KARIA, C. T.; CARVALHO, M. A.; FALEIRO, F. G.; ZUCCHI, M. I.; SOUZA, A. P. de. |
| Stylosanthes species are important forage legumes in tropical and subtropical areas. S. macrocephala and S. capitata germplasm collections that consist of 134 and 192 accessions, respectively, are maintained at the Brazilian Agricultural Research Corporation Cerrados (Embrapa-Cerrados). Polymorphic microsatellite markers were used to assess genetic diversity and population structure with the aim to assemble a core collection. The mean values of HO and HE for S. macrocephala were 0.08 and 0.36, respectively, whereas the means for S. capitata were 0.48 and 0.50, respectively. Roger?s genetic distance varied from 0 to 0.83 for S. macrocephala and from 0 to 0.85 for S. capitata. Analysis with STRUCTURE software distinguished five groups among the S.... |
| Tipo: Separatas |
Palavras-chave: Tropical forage.; Core collection; Genetic diversity; Microsatellites; Stylosanthes.. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/946145 |
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| Santos-Garcia,Melissa Oliveira; Toledo-Silva,Guilherme de; Sassaki,Rodrigo Possidonio; Ferreira,Thais Helena; Resende,Rosângela Maria Simeão; Chiari,Lucimara; Karia,Cláudio Takao; Carvalho,Marcelo Ayres; Faleiro,Fábio Gelape; Zucchi,Maria Imaculada; Souza,Anete Pereira de. |
| Stylosanthes species are important forage legumes in tropical and subtropical areas. S. macrocephala and S. capitata germplasm collections that consist of 134 and 192 accessions, respectively, are maintained at the Brazilian Agricultural Research Corporation Cerrados (Embrapa-Cerrados). Polymorphic microsatellite markers were used to assess genetic diversity and population structure with the aim to assemble a core collection. The mean values of H O and H E for S. macrocephala were 0.08 and 0.36, respectively, whereas the means for S. capitata were 0.48 and 0.50, respectively. Roger's genetic distance varied from 0 to 0.83 for S. macrocephala and from 0 to 0.85 for S. capitata. Analysis with STRUCTURE software distinguished five groups among the S.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stylosanthes; Tropical forage; Microsatellites; Genetic diversity; Core collection. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500020 |
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| 范明仁; 陳述; L. M. Engle; Ming-Jen Fan; Shu Chen. |
| [[abstract]]本研究之主要目的為針對利用性狀調查資料所建立的番椒屬種原核心收集，期望藉由RAPD分子標記，就分子層次瞭解該種原核心收集的遺傳歧異結構。本研究以16個逢機引子，針對番椒屬種原核心收集的264份種原進行RAPD分析，並據此進行集群分析結果發現，由兩群間最小距離 (Mini Distance; MD) 於0.83為分群依據時，可明顯的將番椒屬種原核心收集區分為5個子群，其中C. annuum 的種原有92％集中在第1子群，C. baccatum 亦有92％的種原集中在第4子群，C. chinense 的種原為86％集中在第2子群，C. frutescens 為86％的種原集中在第3子群，而C. chacoense 則是全部的參試種原皆集中於第5子群，顯示就分子層次而言，番椒屬內各不同“種”別的種原間具有顯著的遺傳歧異，因此在建立番椒屬種原核心收集時，應以儘量包含不同“種”別的種原為考量。針對同一“種”別之種原研究結果發現，仍有少部份的種原會散佈至其它子群中，顯示“種”內亦具有相當程度的歧異分化存在，以保存寬廣之遺傳歧異的觀點而言，這些具有歧異分化的種原納入在種原核心收集中是相當有意義的。經由 Shannon-Weaver 歧異指數之估算發現，第1子群（主要成員為C. annuum）歧異指數較低（為0.783），顯示群內種原間的遺傳相似性較其它群為高，研究認為應可藉由RAPD分子標記針對該群種原進行再篩減，以形成更具代表性的種原核心收集。因此本研究應用RAPD分析探討番椒屬種原核心收集之結果顯示，藉由分子標記不但有助於瞭解分子層次的遺傳歧異結構，並可應用於輔助種原核心收集之建立。 |
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Palavras-chave: 番椒屬 核心收集 核酸逢機增殖多型性 遺傳歧異 Capsicum; Core collection; RAPD; Genetic diversity [[classification]]9. |
| Ano: 2004 |
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| Registros recuperados: 10 | |
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