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Registros recuperados: 5
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Análise de associação quanto à produtividade e seus caracteres componentes em linhagens e cultivares de arroz de terras altas PAB
Mendes,Clistiane dos Anjos; Borba,Tereza Cristina de Oliveira; Bueno,Luíce Gomes; Cruzeiro,Gustavo Alencastro Veiga; Mendonça,João Antônio; Pantalião,Gabriel Feresin; Vianello,Rosana Pereira; Brondani,Claudio.
O objetivo deste trabalho foi identificar, por meio da análise de mapeamento associativo, os marcadores moleculares relacionados à produtividade do arroz de terras altas e aos seus caracteres componentes. Foram usadas 113 linhagens e cultivares de arroz de terras altas, da Coleção Nuclear de Arroz da Embrapa, com reduzido vínculo genético entre si. Os seguintes caracteres componentes da produtividade foram avaliados: número de panículas por metro, número de grãos por panícula e peso de 100 grãos. Dos 115 marcadores utilizados, 25 (21,7%) associaram-se significativamente a um ou mais caracteres. Entre os 29 SSR ("simple sequence repeats") colocalizados em QTL ("quantitative trait loci") de produtividade de arroz, 12 foram associados aos caracteres avaliados...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Coleção nuclear; Desequilíbrio de ligação; Genômica funcional; Mapeamento associativo; Seleção assistida por marcadores..
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014001000771
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Association mapping for yield and grain quality traits in rice (Oryza sativa L.) Genet. Mol. Biol.
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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Characterization of rhizobia isolates obtained from nodules of wild genotypes of common bean BJM
Cardoso,Aline Assis; Andraus,Michel de Paula; Borba,Tereza Cristina de Oliveira; Martin-Didonet,Claudia Cristina Garcia; Ferreira,Enderson Petrônio de Brito.
Abstract This study aimed to evaluate the tolerance to salinity and temperature, the genetic diversity and the symbiotic efficiency of rhizobia isolates obtained from wild genotypes of common bean cultivated in soil samples from the States of Goiás, Minas Gerais and Paraná. The isolates were subjected to different NaCl concentrations (0%, 1%, 2%, 4% and 6%) at different temperatures (28 °C, 33 °C, 38 °C, 43 °C and 48 °C). Genotypic characterization was performed based on BOX-PCR, REP-PCR markers and 16S rRNA sequencing. An evaluation of symbiotic efficiency was carried out under greenhouse conditions in autoclaved Leonard jars. Among 98 isolates about 45% of them and Rhizobium freirei PRF81 showed a high tolerance to temperature, while 24 isolates and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Rhizobium; Symbiotic efficiency; Carbon source use; Tolerance to salinity and temperature.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100043
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Genetic variability of Brazilian rice landraces determined by SSR markers PAB
Borba,Tereza Cristina de Oliveira; Mendes,Clistiane dos Anjos; Guimarães,Élcio Perpétuo; Brunes,Tuliana Oliveira; Fonseca,Jaime Roberto; Brondani,Rosana Vianello; Brondani,Claudio.
The objective of this study was to evaluate the genetic variability of rice (Oryza sativa) landraces collected in Brazilian small farms. Twelve simple sequence repeat (SSR) markers characterized 417 landraces collected in 1986, 1987 and 2003, in the state of Goiás, Brazil. The number of landraces with long and thin grain type increased in the evaluated period, probably due to market demand. Based on the molecular data, the genetic variability increased during this period and, as per to the factorial correspondence analysis, most of the accessions were grouped according to the year of collection. The incorporation of modern rice cultivars in landrace cultivation areas and the selection carried out by small farmers are the most probable factors responsible...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Genotyping; Microsatellites; Participatory breeding; Rice breeding.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000700009
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Genome-wide analysis of the transcriptional response to drought stress in root and leaf of common bean Genet. Mol. Biol.
Pereira,Wendell Jacinto; Melo,Arthur Tavares de Oliveira; Coelho,Alexandre Siqueira Guedes; Rodrigues,Fabiana Aparecida; Mamidi,Sujan; Alencar,Sérgio Amorim de; Lanna,Anna Cristina; Valdisser,Paula Arielle Mendes Ribeiro; Brondani,Claudio; Nascimento-Júnior,Ivanildo Ramalho do; Borba,Tereza Cristina de Oliveira; Vianello,Rosana Pereira.
Abstract Genes related to the response to drought stress in leaf and root tissue of drought-susceptible (DS) and tolerant (DT) genotypes were characterized by RNA-Seq. In total, 54,750 transcripts, representative of 28,590 genes, were identified; of these, 1,648 were of high-fidelity (merge of 12 libraries) and described for the first time in the Andean germplasm. From the 1,239 differentially expressed genes (DEGs), 458 were identified in DT, with a predominance of genes in categories of oxidative stress, response to stimulus and kinase activity. Most genes related to oxidation-reduction terms in roots were early triggered in DT (T75) compared to DS (T150) suggestive of a mechanism of tolerance by reducing the damage from ROS. Among the KEGG enriched by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Water deficit; Functional genomics; Single nucleotide polymorphism (SNP).
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100309
Registros recuperados: 5
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