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	Provedor de dados Bragantia (4) Scientia Agricola (2) Rev. Bras. Bot. (1) Autor Pinto-Maglio,Cecília Alzira Ferreira (7) Oliveira,Érica Cristina de (3) Bettiol Neto,José Emilio (1) Carbonell,Sérgio Augusto Morais (1) Chiorato,Alisson Fernando (1) Del Nero,Mariana (1) Granato,Laís Moreira (1) Kavati,Ryosuke (1) Lombello,Ricardo Augusto (1) Moraes,Izabel Cristina Ribeiro de (1) Paula,Juliana Maria de (1) Pinto,Luciana Rossini (1) Ramos,Luis Carlos da Silva (1) Reis,Raquel Luiza de Moura dos (1) Silva,Daiana Alves da (1) Mais... Palavra-chave Pollen viability (2) Aluminum tolerance (1) Anatomy of anthers (1) Apomixy (1) CMA/DAPI banding (1) Coloração com Alexander (1) Common bean (1) Conyza bonariensis (1) Criopreservação (1) Cytomolecular mapping (1) FISH-rDNA (1) Fluorescence in situ hybridization (1) Germinação de pólen in vitro (1) Heat stress (1) Irregular meiosis (1) Karyotype (1) Male sterility (1) Meiosis (1) Meiotic index (1) Microsporogenesis (1) Mais... Tipo do documento Info:eu-repo/semantics/article (7) Ano 2020 (2) 2019 (1) 2017 (2) 2009 (2) País Brazil (7) Idioma Inglês (6) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 7 Primeira ... 1 ... Última Reproductive biology and cytology of Hypericum brasiliense Choisy (Hypericaceae) Rev. Bras. Bot. Moraes,Izabel Cristina Ribeiro de; Pinto-Maglio,Cecília Alzira Ferreira; Lombello,Ricardo Augusto. This is the first study of reproductive biology and cytology carried out with Hypericum brasiliense, a species with medicinal properties and potential agronomic interest. Three populations of H. brasiliense collected at Southeastern Brazil were studied. The results indicate that H. brasiliense is preferentially allogamous, self-compatible, facultative apomitic and anemophilous. Male sterility was observed in about 50% of individuals from the three populations. Anatomical studies evidenced structural abnormalities in anthers of male sterile flowers, showing enlarged tapetal cells and thick secretion deposits on the tapetal cell surfaces that may cause nutritional deficit for pollen mother cells. In cytogenetic studies several haploid chromosome numbers were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anatomy of anthers; Apomixy; Irregular meiosis; Male sterility. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000300013 Influence of high temperature on the reproductive biology of dry edible bean (Phaseolus vulgaris L.) Scientia Agricola Silva,Daiana Alves da; Pinto-Maglio,Cecília Alzira Ferreira; Oliveira,Érica Cristina de; Reis,Raquel Luiza de Moura dos; Carbonell,Sérgio Augusto Morais; Chiorato,Alisson Fernando. ABSTRACT: The aim of this study was to investigate the effect of heat stress on 12 bean genotypes through the analysis of their reproductive biology in terms of flowering, pollen viability, meiotic behavior, and production. Plants were grown in a climate chamber at 25-20 °C (day and night) and at a high temperature treatment 37-26 °C (day and night) from the vegetative (V4) development stage to physiological maturity. The experimental design was 2 × 12 factorial arrangement with six replications and the factors consisted of heat treatments and genotypes. In three replications, the number of newly opened flowers was checked daily. At physiological maturity, the following traits were evaluated: percentage of pod set, number of pods, number of viable seeds,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Common bean; Heat stress; Pollen viability; Meiosis; Seed yield. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000301100 Cytogenetic mapping of the ALMT (aluminum-activated malate transporter) gene in wheat genotypes Scientia Agricola Oliveira,Érica Cristina de; Pinto-Maglio,Cecília Alzira Ferreira. ABSTRACT: Presence of the ALMT1 (aluminum-activated malate transporter) gene confers resistance to aluminum toxicity in Triticum aestivum (common wheat). No resistant cultivars of Triticum turgidum ssp. Durum Desf. (durum wheat) have been registered in Brazil. The aim of this study was to map the ALMT1 through application of the FISH (fluorescence in situ hybridization) technique in five wheat genotypes, common and durum, from the Active Germplasm Bank (AGB) of the Instituto Agronômico (IAC): BH 1146, P19, P33, Anahuac, and IAC 1003. FISH-ALMT1 signals were registered in Anahuac (sensitive) chromosomes and in BH 1146, P19, and P33 (resistant) chromosomes. In the three resistant genotypes, a characteristic double FISH signal was found, located in different... Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum sp.; Molecular cytogenetics; Fluorescence in situ hybridization; Aluminum tolerance; Toxicity. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000501102 Cytomolecular characterization of cultivars and landraces of wheat tolerant and sensitive to aluminum toxicity Bragantia Oliveira,Érica Cristina de; Pinto-Maglio,Cecília Alzira Ferreira. ABSTRACT Karyotyping and chromosome complement knowledge are a prerequisite for cytogenetic mapping. The aim of this study was to characterize 1 common wheat cultivar (BH 1146) and 4 durum wheat genotypes (IAC 1003, Langdon, P19 and P33) from the breeding program of the Agronomic Institute of Campinas (IAC), using karyotype analysis together with Chromomycin A3/4’-6-Diamidino-2-phenylindole (CMA/DAPI) banding techniques for longitudinal characterization of chromosomes and fluorescence in situ hybridization (FISH) in the mapping of the 45S rDNA region. Durum wheat chromosome complement number was 2n = 4x = 28 with the following karyotype formula: 22m + 6sm. Common wheat chromosome complement number was 2n = 6x = 42 with the following karyotype formula: 34m... Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum; Triticum turgidum ssp. durum; Karyotype; CMA/DAPI banding; FISH-rDNA; Cytomolecular mapping. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400456 Morphological analysis and DNA methylation in Conyza bonariensis L. cronquist (Asteraceae) phenotypes Bragantia Paula,Juliana Maria de; Pinto-Maglio,Cecília Alzira Ferreira; Pinto,Luciana Rossini. ABSTRACT The species Conyza bonariensis (L.) cause losses in agriculture due to their invasive capacity and resistance to herbicides like glyphosate. The species of this genus exhibit phenotypic plasticity, which complicates their identification and characterization. Thus, experiments were performed with 2 extreme C. bonariensis phenotypes (called broad leaf and narrow leaf) in greenhouse conditions and in the laboratory, in order to verify if the morphological differences among these phenotypes are a genetic character or result from environmental effects. In addition to the comparative morphological analysis, assessment of DNA methylation profile was performed to detect the occurrence, or not, of differences in the epigenetic level. The morphological... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenotypic plasticity; Conyza bonariensis; Resistance; Weeds. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400480 Viabilidade e conservação de pólen de três anonas comerciais Bragantia Bettiol Neto,José Emilio; Del Nero,Mariana; Kavati,Ryosuke; Pinto-Maglio,Cecília Alzira Ferreira. O pólen das anonas comerciais, cherimóia (Annona cherimola Mill.), fruta-do-conde, pinha ou ata (Annona squamosa L.) e atemóia (Annona cherimola X Annona squamosa) têm período de viabilidade reduzido. Este fato, aliado à ocorrência de dicogamia protogínica nessas plantas, demanda metodologias de conservação que promovam maior longevidade ao pólen. Objetivou-se neste estudo a aplicação de técnicas de conservação do pólen dessas fruteiras. O pólen foi coletado de flores em estádio macho e conservado em nitrogênio líquido (-196 °C) e geladeira (4-5 °C). Utilizaram-se amostras de pólen dessecadas e não dessecadas, coletadas em período seco e úmido do ano. Pólen recém-coletado e não submetido à conservação, pólen fresco (PF), foi considerado padrão. O pólen... Tipo: Info:eu-repo/semantics/article Palavras-chave: Criopreservação; Coloração com Alexander; Germinação de pólen in vitro; Viabilidade de pólen. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052009000400002 Relationship between meiotic instability and fertility in F2 generation Arabusta coffee plants Bragantia Granato,Laís Moreira; Ramos,Luis Carlos da Silva; Pinto-Maglio,Cecília Alzira Ferreira. ABSTRACT Parental plants, an F1 interspecific hybrid and the F2 generation from Arabusta coffee plants were investigated for meiotic behavior and viability of pollen to understand part of their reproductive biology that affects their possible use in coffee breeding programs. Both parental plants (C. canephora var. Robusta 4x and C. arabica var. dihaploid Bourbon Vermelho) showed a meiosis diploid-like behavior, despite presenting a small percentage of irregularities, just as occurred for the F1 Arabusta hybrid. On the other hand, all F2 plants showeda higher frequency of anomalies that compromised pollen viability. The highest meiotic indices were registered for three analyzed plants of the F2 generation, and the pollen viability tests revealed the highest... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microsporogenesis; Meiotic index; Pollen viability; Post-meiotic products. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200215 Registros recuperados: 7 Primeira ... 1 ... Última

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