Claudimar Sidnei Fior
Universidade Federal do Rio Grande do Sul
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Featured researches published by Claudimar Sidnei Fior.
Ciencia Rural | 2011
Claudimar Sidnei Fior; Lia Rosane Rodrigues; Cristina Leonhardt; Sergio Francisco Schwarz
Aiming to identify efficient conditions to break dormancy in Butia capitata (Mart.) Becc. seeds sown in vitro and in an incubator tests were conducted with mechanical scarification in pre-sowing, by partial or total opening of the seed embryonic cavity, isolated of the endocarps. The embryonic cavity opening accelerated germination significantly, especially when there was total removal of the seed cap, allowing germination on average 90% of embryos, regardless of the provenance of the accessions. The seed dormancy of B. capitata seems to be related to the mechanical barrier imposed by the seed tissues that hamper the embryo development, suggesting mechanical exogenous dormancy.
Ciencia Rural | 2000
Claudimar Sidnei Fior; Lia Rosane Rodrigues; Atelene Normann Kampf
Limonium latifolium Kuntze is a cut flower commercialy propagated in vitro. To develop and improve the micropropagation protocol, a sequence of assays was developed to evaluate performance of node explants; effect of cytokinins concentration (kinetin-KlN and 6-benzyl-aminopurin-BA) on the regeneration rate; the presence of BA during the multiplication phase; concentration of naphthaleneacetic acid-NAA and indole3-butyric acid-IBA on the rooting phase and procederes for the acciimatiwtion in vitro. The micropropagation was done at commercial levei using inflorescence nades explants. By the regeneration phase the best results were obtained with BA at 0.7mg/l for 35 days in MS medium. The multiplication phase takes 35 days and shows satisfactory results with BA at 0.2mg/l , with the rate of 4 plantiets/explant. The rooting phase is takes 30 days in MS medium with IBA at 1mg/l , with good survival scores after transfer to in vivo. The acciimatiwtion has made under plastic covering, inside greenhouse with room temperature and intermitent mist, using flats with 242 cells of 10cm3 each, filled with sterilized carbonized rice hulis. Every two weeks the plants were fertigated with commercial fertilizer (15:5:15 + micronutrients) at 0.5g/l . The in vitro process takes 100 - 120 days and one explant originates 15 - 30 plants.
Brazilian Journal of Plant Physiology | 2011
Alfredo Gui Ferreira; Claudimar Sidnei Fior; Sonia Cristina Juliano Gualtieri
Pinus elliottii is a fast-growing conifer well adapted to southern Brazil, used for wood fiber and resin production. Oleoresin production is part of the plants defense systems and is induced by ethylene, which production is stimulated by hypoxic conditions. The experiment was designed with the goal of verifying whether one year-old plants had measurable oleoresin yield and if flooding led to increased oleoresin production. There was an increase of 78% in oleoresin production after 14 to 21 days of flooding and plants with larger stem diameters were more productive.
Ornamental Horticulture | 2015
Gilmar Schafer; Paulo Vitor Dutra de Souza; Claudimar Sidnei Fior
An overview of the physical and chemical properties of substrates used in horticulture at southern Brazil The cultivation in greenhouse and containers culminated with the necessity to use substrates with formulations as well as distinguished chemical and physical characteristics, the last ones assuming a key role in cultivation of horticultural plants. The aim of this study is to present results of physical and chemical analyses of substrates forwarded to an commercial laboratory (Laboratorio de Substratos para Plantas - UFRGS) for the last three years, aiming to establishing a panorama of the substrates area and comparing them with reference values cited in the literature. In this period were performed 307 physical and 479 chemical analyses, which were the basis for this study. Physical analyses performed were the density in dry basis and the water retention curve (total porosity, air space, available water and remaining water). Chemical analyses were the electrical conductivity (EC) and the pH. The main results concerning physical characteristics, demonstrate that the substrates present wide range of density in dry basis and may be used for different sized containers; however most substrates analyzed is out of ideal range for the other physical characteristics of the substrate. For the chemical characteristic the substrates in cultivation in southern Brazil are mostly alkaline and the electrical conductivity of the substrates in cultivation is very diverse, with considerable number of samples above the recommended
Revista Arvore | 2013
Claudimar Sidnei Fior; Paulo Vitor Dutra de Souza; Sergio Francisco Schwarz
Butia odorata is a native palm tree from Rio Grande do Sul State, Brazil, with fruits used as food. The aim of this study was to test the emergence of seeds and diaspores under different procedures to dormancy breaking in greenhouse conditions. Scarification by opening of the embryonic cavity of the seed allowed the emergence of 72% in a mean time of 56 days. The immersion of the seeds in water for 18 h before to sowing increased the emergence but delayed the mean time to 323 days. Seeds isolated from the endocarp and not scarified presented 38% of germination in a mean time of 319 days. The emergence from diaspores submitted to 40 oC for three weeks before sowing was not significantly different to emergence from seeds isolated from endocarp, however the mean time was reduced to 206 days. The opening of the embryonic cavity resulted in higher percentage of emergency, with significant lower mean time.
Revista Brasileira De Fruticultura | 2011
Luana dos Santos de Souza; Claudimar Sidnei Fior; Paulo Vitor Dutra de Souza; Sergio Francisco Schwarz
The guabijuzeiro is an evergreen tree 15-25 meters high. Occurs in Brazil from Sao Paulo to Rio Grande do Sul. Among the wild fruits this species has several characteristics which make it with potential for commercial use, in which the most important are related to fructification. Its propagation is carried out by seed and little information on vegetative propagation. Hence, the objective was to study the disinfection of seeds and in vitro multiplication of guabijuzeiro. The experiments were performed at the Laboratory of Biotechnology in Horticulture, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul. The test began with the disinfestation soaking in 70% ethanol for 1 minute, followed by a solution of sodium hypochlorite at concentrations of 0; 2; 4; 6 and 8%. The culture medium used in experiments was WPM with 30 g.L-1 sucrose and 7 g.L-1 of agar. For the testing of multiplication were used apical segments of seedlings from seeds germinated in vitro. The treatments consisted of BAP concentrations (0; 0,2; 0,4; 0,6; 0,8; 1 and 2 mg.L-1). As a result the concentrations between 4 and 6% sodium hypochlorite are more advantageous, as well as being effective in disinfestation, positively influence the germination. For multiplication, the cultivation of apical segments on medium with BAP at concentrations of up 1mg.l-1 was effective.
Iheringia Serie Botanica | 2018
Claudimar Sidnei Fior; Anaíse Costa Calil; Paulo Vitro Dutra de Souza; Sergio Francisco Schwarz
The objective of this study was to evaluate the culture medium seeking the development and root formation of pindo palm seedlings for acclimatization. The MS medium were used at a concentration of 70% ammonium nitrate and potassium nitrate, and 0.8% of agar. In the first experiment, concentrations of naphthaleneacetic acid (ANA) added to the medium were tested. In the second, the rooting and growth of the seedlings were evaluated after varying the sucrose concentration (15, 30 and 45 g.L-1) in medium with 0.6 mg.L-1 of ANA. A third experiment was carried out to adjust the ANA concentration, based on the results of the fi rst two tests. The rooting of Butia odorata seedlings were optimized in vitro in medium with 0.3 to 0.9 mg.L-1 of ANA, combined with concentrations of sucrose between 30 and 45 g.L-1.
Iheringia Serie Botanica | 2017
Leonardo Mayer; Jéssica Meneghini; Claudimar Sidnei Fior; Elisete Maria De Freitas
Passiflora caerulea L. apresenta potencial para exploracao, mas nao e produzida para fi ns comerciais no Brasil e nao existem estudos que defi nam metodos de producao de mudas. O objetivo do estudo foi avaliar a possibilidade de propagacao de P. caerulea por estaquia com uso de concentracoes de acido indolbutirico (AIB). Estacas foram imersas por um minuto em solucao hidroalcoolica de AIB (0, 250, 500, 750 e 1500 mg L-1). Apos 60 dias, as estacas foram avaliadas quanto ao comprimento das raizes, altura da parte aerea, massa fresca e seca. Os dados foram submetidos a analise de variância e de regressao. O enraizamento foi superior a 50% das estacas, mesmo sem o uso de AIB. O porcentual de estacas mortas aumentou na medida em que aumentou a concentracao da auxina, indicando possivel toxicidade aos tecidos. Portanto, o uso de auxina nao e indicado para a propagacao da especie por estaquia.
Revista Ceres | 2014
Claudimar Sidnei Fior; Amanda Pezzi; Sergio Francisco Schwarz
Butia odorata (Barb.Rodr.) Noblick (butiazeiro) e uma palmeira nativa do sul do Brasil, com grande demanda para usos ornamental e agroindustrial. O objetivo deste estudo foi avaliar o desenvolvimento inicial de mudas de butiazeiro, em recipientes com diferentes composicoes de substratos. O experimento foi desenvolvido em casa de vegetacao sem controle de temperatura e umidade. Foram utilizadas mudas com 60 dias apos a germinacao, e avaliados os substratos, em cinco proporcoes, dos componentes casca de arroz carbonizada e casca de pinus. Em etapa posterior, monitorou-se o efeito do pH do substrato no desenvolvimento das mudas mantidas nos mesmos recipientes e tratamentos. Para tanto, as plantas foram distribuidas em igual numero e representacao dos tratamentos, em quatro grupos, com quatro niveis de pH do substrato (4,0; 4,9; 5,8 e 6,7). Noventa dias apos o inicio da primeira etapa, e 161 dias apos o inicio da segunda, foram avaliados o desenvolvimento das plantas, a condutividade eletrica e o pH dos substratos. Na primeira etapa, constatou-se diferenca entre os tratamentos somente para altura das plantas e pH do substrato, ambas relacionadas diretamente com a proporcao de casca de pinus na formulacao. Na segunda etapa, a composicao do substrato foi determinante para o maior desenvolvimento das mudas. Somente o numero de folhas nao apresentou diferenca significativa entre os tratamentos. Contudo, para todas as variaveis, a presenca de casca de pinus, mesmo em baixa proporcao, foi suficiente para favorecer o desenvolvimento vegetativo.
Ornamental Horticulture | 1999
Claudimar Sidnei Fior; Atelene Normann Kampf