Consulta: subjectFacets:"Core collection"
Registros recuperados: 5
Data/hora: 10/06/2024 02:16:50

Association mapping for yield and grain quality traits in rice (Oryza sativa L.)
Provedor de dados: Genetics and Molecular Biology
Autores: 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

Using genetic diversity information to establish core collections of Stylosanthes capitata and Stylosanthes macrocephala
Provedor de dados: Genetics and Molecular Biology
Autores: 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

Genetic structure and a selected core set of brazilian soybean cultivars
Provedor de dados: Genetics and Molecular Biology
Autores: Priolli,Regina Helena Geribello; Wysmierski,Philip Traldi; Cunha,Camila Pinto da; Pinheiro,José Baldin; Vello,Natal Antonio.
Soybean is one of the most valuable and profitable oil crop species and a thorough knowledge of the genetic structure of this crop is necessary for developing the best breeding strategies. In this study, a representative collection of soybean cultivars recommended for farming in all Brazilian regions was genotyped using 27 simple sequence repeat (SSR) loci. A total of 130 alleles were detected, with an average allelic number of 4.81 per locus. These alleles determined the core set that best represented this soybean germplasm. The Bayesian analysis revealed the presence of two clusters or subgroups within the whole collection (435 soybean cultivars) and the core set (31 entries). Cultivars of similar origin (ancestral) were clustered into the same groups in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Core collection; Genetic base; Glycine max (L.) Merrill; Bayesian method; SSR markers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300013

Agronomic and molecular characterization of wild germplasm Saccharum spontaneum for sugarcane and energycane breeding purposes
Provedor de dados: Scientia Agricola
Autores: 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

Inorganic Nutritional Composition of Common Bean (Phaseolus vulgaris L.) Genotypes Race Chile
Provedor de dados: Chilean Journal of Agricultural Research
Autores: 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