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Registros recuperados: 8
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Adaptabilidade e estabilidade de acessos de uma coleção nuclear de arroz PAB
Bueno,Luíce Gomes; Vianello,Rosana Pereira; Rangel,Paulo Hideo Nakano; Utumi,Marley Marico; Cordeiro,Antônio Carlos Centeno; Pereira,José Almeida; Franco,Daniel Fernandez; Moura Neto,Francisco; Mendonça,João Antônio; Coelho,Alexandre Siqueira Guedes; Oliveira,Jaison Pereira de; Brondani,Claudio.
O objetivo deste trabalho foi determinar o potencial produtivo e a interação entre genótipos e ambientes em 550 acessos da Coleção Nuclear de Arroz da Embrapa. O desempenho, a adaptação e a estabilidade produtiva de cada genótipo foram avaliados por meio da metodologia de análise dos efeitos principais aditivos e interações multiplicativas (AMMI), em nove experimentos de campo, realizados em seis Estados, em condição de sequeiro e irrigada, durante três anos agrícolas. Foi realizada a análise por meio de modelos lineares mistos, e as estimativas de componentes de variância foram obtidas pelo método de máxima verossimilhança residual (REML), com aplicação do procedimento de melhor predição linear não viesada (BLUP) para a predição dos valores genéticos dos...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; AMMI; Caracterização agronômica; Modelo linear misto; Recursos genéticos; Variedades tradicionais.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000200010
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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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Genetic variability of rice recurrent selection populations as affected by male sterility or manual recombination PAB
Pinheiro,Letícia da Silveira; Rangel,Paulo Hideo Nakano; Vianello,Rosana Pereira; Brondani,Claudio.
The objective of this work was to determine the effect of male sterility or manual recombination on genetic variability of rice recurrent selection populations. The populations CNA-IRAT 4, with a gene for male sterility, and CNA 12, which was manually recombined, were evaluated. Genetic variability among selection cycles was estimated using14 simple sequence repeat (SSR) markers. A total of 926 plants were analyzed, including ten genitors and 180 individuals from each of the evaluated cycles (1, 2 and 5) of the population CNA-IRAT 4, and 16 genitors and 180 individuals from each of the cycles (1 and 2) of CNA 12. The analysis allowed the identification of alleles not present among the genitors for both populations, in all cycles, especially for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Allele variation; Rice breeding; Molecular markers; Population improvement.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000600011
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Genome prediction accuracy of common bean via Bayesian models Ciência Rural
Barili,Leiri Daiane; Vale,Naine Martins do; Silva,Fabyano Fonseca e; Carneiro,José Eustáquio de Souza; Oliveira,Hinayah Rojas de; Vianello,Rosana Pereira; Valdisser,Paula Arielle Mendes Ribeiro; Nascimento,Moyses.
ABSTRACT: We aimed to apply genomic information based on SNP (single nucleotide polymorphism) markers for the genetic evaluation of the traits “stay-green” (SG), plant architecture (PA), grain aspect (GA) and grain yield (GY) in common bean through Bayesian models. These models were compared in terms of prediction accuracy and ability for heritability estimation for each one of the mentioned traits. A total of 80 cultivars were genotyped for 377 SNP markers, whose effects were estimated by five different Bayesian models: Bayes A (BA), B (BB), C (BC), LASSO (BL) e Ridge regression (BRR). Although, prediction accuracies calculated by means of cross-validation have been similar within each trait, the BB model stood out for the trait SG, whereas the BRR was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; SNP markers; Cross-validation.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800204
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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
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Linkage and mapping of quantitative trait loci associated with angular leaf spot and powdery mildew resistance in common beans Genet. Mol. Biol.
Bassi,Denis; Briñez,Boris; Rosa,Juliana Santa; Oblessuc,Paula Rodrigues; Almeida,Caléo Panhoca de; Nucci,Stella Maris; Silva,Larissa Chariel Domingos da; Chiorato,Alisson Fernando; Vianello,Rosana Pereira; Camargo,Luis Eduardo Aranha; Blair,Matthew Wohlgemuth; Benchimol-Reis,Luciana Lasry.
Abstract Angular leaf spot (ALS) and powdery mildew (PWM) are two important fungi diseases causing significant yield losses in common beans. In this study, a new genetic linkage map was constructed using single sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs), in a segregating population derived from the AND 277 x SEA 5 cross, with 105 recombinant inbred lines. Phenotypic evaluations were performed in the greenhouse to identify quantitative trait loci (QTLs) associated with resistance by means of the composite interval mapping analysis. Four QTLs were identified for ALS resistance. The QTL ALS11AS, linked on the SNP BAR 5054, mapped on chromosome Pv11, showed the greatest effect (R2 = 26.5%) on ALS phenotypic variance. For PWM resistance,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pseudocercospora griseola; Erysiphe polygoni; Quantitative inheritance; SSRs; SNPs.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000100109
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Mapping QTLs for drought tolerance in a SEA 5 x AND 277 common bean cross with SSRs and SNP markers Genet. Mol. Biol.
Briñez,Boris; Perseguini,Juliana Morini Küpper Cardoso; Rosa,Juliana Santa; Bassi,Denis; Gonçalves,João Guilherme Ribeiro; Almeida,Caléo; Paulino,Jean Fausto de Carvalho; Blair,Matthew Ward; Chioratto,Alisson Fernando; Carbonell,Sérgio Augusto Morais; Valdisser,Paula Arielle Mendes Ribeiro; Vianello,Rosana Pereira; Benchimol-Reis,Luciana Lasry.
Abstract The common bean is characterized by high sensitivity to drought and low productivity. Breeding for drought resistance in this species involves genes of different genetic groups. In this work, we used a SEA 5 x AND 277 cross to map quantitative trait loci associated with drought tolerance in order to assess the factors that determine the magnitude of drought response in common beans. A total of 438 polymorphic markers were used to genotype the F8 mapping population. Phenotyping was done in two greenhouses, one used to simulate drought and the other to simulate irrigated conditions. Fourteen traits associated with drought tolerance were measured to identify the quantitative trait loci (QTLs). The map was constructed with 331 markers that covered all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic stress; Interpopulation gene-pool; Molecular markers; QTL mapping; Water deficit.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000500813
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Yield QTL analysis of Oryza sativa x O. glumaepatula introgression lines PAB
Rangel,Priscila Nascimento; Vianello,Rosana Pereira; Melo,Arthur Tavares Oliveira; Rangel,Paulo Hideo Nakano; Mendonça,João Antônio; Brondani,Claudio.
The objective of this work was to evaluate the yield performance of two generations (BC2F2 and BC2F9) of introgression lines developed from the interspecific cross between Oryza sativa and O. glumaepatula, and to identify the SSR markers associated to yield. The wild accession RS‑16 (O. glumaepatula) was used as donor parent in the backcross with the high yielding cultivar Cica‑8 (O. sativa). A set of 114 BC2F1 introgression lines was genotyped with 141 polymorphic SSR loci distributed across the whole rice genome. Molecular analysis showed that in average 22% of the O. glumaepatula genome was introgressed into BC2F1 generation. Nine BC2F9 introgression lines had a significantly higher yield than the genitor Cica‑8, thus showing a positive genome...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AB‑QTL; Breeding; Genetic pool; Molecular markers; Target genome region; Yield performance.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000300006
Registros recuperados: 8
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