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Registros recuperados: 6
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ITS-rDNA phylogeny of Colletotrichum spp. causal agent of apple Glomerella leaf spot Ciência Rural
Giaretta,Diorvania Ribeiro; Bogo,Amauri; Coelho,Cileide Maria Medeiros; Guidolin,Altamir Frederico; Dantas,Adriana Cibele de Mesquita; Gomes,Eliane Aparecida.
Several diseases have affected apple production, among them there is Glomerella leaf spot (GLS) caused by Colletotrichum spp. The first report of this disease in apple was in plants nearby citrus orchards in São Paulo State, Brazil. The origin of this disease is still not clear, and studies based on the molecular phylogeny could relate the organisms evolutionarily and characterize possible mechanisms of divergent evolution. The amplification of 5.8S-ITS (Internal Transcribed Spacer) of rDNA of 51 pathogenic Colletotrichum spp. isolates from apples, pineapple guava and citrus produced one fragment of approximately 600 bases pairs (bp) for all the isolates analyzed. The amplified fragments were cleaved with restriction enzymes, and fragments from 90 to 500bp...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pineapple guava; Citrus; Molecular phylogeny; In silico; Phylogenetic tree.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000400010
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Non-destructive measurement of leaf area and leaf pigments in feijoa trees AGRIAMBI
Sachet,Marcos R.; Citadin,Idemir; Guerrezi,Marieli T.; Pertille,Rafael H.; Donazzolo,Joel; Nodari,Rubens O..
ABSTRACT Leaf area (cm2 per leaf) and leaf pigment content are important traits that can be used to better understand a plants physiology. In this study, empirical non-destructive models for leaf area and leaf pigment based on the leaf dimensions, length (L) and width (W) in centimeters, and chlorophyll meter readings were developed for feijoa (Acca sellowiana). The experiment was carried out during January 2016 using five-year-old trees of 60 genotypes, grown under field conditions in the state of Paraná, Brazil. The proposed leaf area (LA) model was L A = 0 . 0022 L 3 + 0 . 1482 W 2 + 0 . 6159 L W + 0 . 1076 (R2 = 0.99). Three current leaf area models found in the literature were also assessed. All of the already created models were less...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Indirect estimates; Pineapple guava; Acca sellowiana.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000100016
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Patterns of protein and carbohydrate accumulation during somatic embryogenesis of Acca sellowiana. Repositório Alice
CANGAHUALA-INOCENTE, G.C.; STEINER, N.; MALDONADO, S.B.; GUERRA, M.P..
The aim of this work was to quantify the protein, starch and total sugars levels during histodifferentiation and development of somatic embryos of Acca sellowiana Berg. For histological observations, the samples were dehydrated in a battery of ethanol, embedded in historesin and stained with toluidine blue (morphology), coomassie blue (protein bodies) and periodic acid?Schiff (starch). Proteins were extracted using a buffer solution, precipitated using ethanol and quantified using the Bradford reagent. Total sugars were extracted using a methanol-chloroform-water (12:5:3) solution and quantified by a reaction with anthrone at 0.2%. Starch was extracted using a 30% perchloric acid solution and quantified by a reaction with anthrone at 0.2%. During the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Total sugars; Starch; Pineapple guava; Metabolism; Açúcares totais; Amido; Goiabeira serrana; Metabolismo.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/125724
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Patterns of protein and carbohydrate accumulation during somatic embryogenesis of Acca sellowiana PAB
Cangahuala-Inocente,Gabriela Claudia; Steiner,Neusa; Maldonado,Sara Beatriz; Guerra,Miguel Pedro.
The aim of this work was to quantify the protein, starch and total sugars levels during histodifferentiation and development of somatic embryos of Acca sellowiana Berg. For histological observations, the samples were dehydrated in a battery of ethanol, embedded in historesin and stained with toluidine blue (morphology), coomassie blue (protein bodies) and periodic acid-Schiff (starch). Proteins were extracted using a buffer solution, precipitated using ethanol and quantified using the Bradford reagent. Total sugars were extracted using a methanol-chloroform-water (12:5:3) solution and quantified by a reaction with anthrone at 0.2%. Starch was extracted using a 30% perchloric acid solution and quantified by a reaction with anthrone at 0.2%. During the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Total sugars; Starch; Pineapple guava; Metabolism.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000300001
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Structural aspects of the zygotic embryogenesis of Acca sellowiana (O. Berg) Burret (Myrtaceae) Acta Botanica
Pescador,Rosete; Kerbauy,Gilberto Barbante; Strassburg,Rosali Constantino; Kraus,Jane Elizabeth.
Acca sellowiana has anatropous, bitegmic and crassinucellate ovules. The outer and inner integuments are double-layered except in the micropyle, where they are composed of more layers; the micropyle is zig-zag shaped. The egg apparatus lies at the micropylar pole, and the zynergids present a conspicuous filiform apparatus. The antipodal cells are present in the chalazal region, persisting before the occurrence of double fertilization. The zygote is visible 21 days after pollination; nuclear endosperm is already present. The first mitotic division of the zygote occurs at 24th day. The globular, cordiform and torpedo embryo stages can be seen at 30, 45 and 60 days after pollination, respectively. The mature embryo characterized by the presence of a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feijoa; Megagametophyte; Ovule; Pineapple guava; Zygotic embryo.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000100017
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The role of γ -aminobutyric acid (Gaba) in somatic embryogenesis of Acca sellowiana Berg. (Myrtaceae) Braz. J. Plant Physiol.
Booz,Maristela Raitz; Kerbauy,Gilberto B.; Guerra,Miguel Pedro; Pescador,Rosete.
The γ-aminobutyric acid (Gaba) is a non-protein amino acid found in prokaryotes and eukaryotes. Its role in plant development has not been fully established. This study reports a quantification of the levels of endogenous Gaba, as well as investigation of its role in different stages of somatic embryogenesis in Acca sellowiana Berg. (Myrtaceae). Zygotic embryos were used as explants and they were inoculated into the culture medium contained different concentrations of Gaba (0,2, 4, 6, 8 and 10 µM). The highest concentrations of endogenous Gaba were detected between the third and nine days after inoculation, reaching the value of 12.77 µmol.g-1FW. High frequency of somatic embryogenesis was observed in response to 10 µM Gaba. This treatment also resulted in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amino acid; Pineapple guava; Plant growth.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000400003
Registros recuperados: 6
Primeira ... 1 ... Última
 

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