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Pre-Inoculation with Bradyrhizobium spp. in Industrially Treated Soybean Seeds  [PDF]
Fernanda Brunetta Godinho Anghinoni, Alessandro Lucca Braccini, Carlos Alberto Scapim, Guilherme Anghinoni, Glaucia Cristina Ferri, Andréia Kazumi Suzukawa, Telmo Antonio Tonin
Agricultural Sciences (AS) , 2017, DOI: 10.4236/as.2017.87044
Abstract: The objective of this study was to compare the effect of anticipated and traditional inoculation of Bradyrhizobium spp. in industrially treated soybean seeds. The experiment was conducted in a randomized complete block design, with 10 treatments and 4 replications. Different combinations of insecticides and fungicides of industrial treatment of seeds, traditional inoculation and long-term (LT) inoculation, as well as different pre-inoculation periods performed at 0, 5 and 10 days before soybean sowing were evaluated. A treatment containing only nitrogen mineral fertilization and also a control treatment were included. The characteristics number of nodules per plant, seeds Nitrogen content, number of pods per plant, mass of thousand seeds and grain yield were evaluated. Results indicated that LT pre-inoculation combined with fludioxonil and thiamedoxan allowed seed storage up to 10 days without affecting soybean yield components.
Produtividade, crescimento e parti??o de matéria seca em duas cultivares de feij?o
Andrade, Carlos Alberto de Bastos;Scapim, Carlos Alberto;Braccini, Alessandro de Lucca e;Martorelli, Danilo Takara;
Acta Scientiarum. Agronomy , 2009, DOI: 10.4025/actasciagron.v31i4.6397
Abstract: growth and yield of ouro negro and brs mg talism? cultivars bean grains were characterized by field experiments, in field conditions, at the coimbra experimental station, state of minas gerais, brazil, federal university of vi?osa, minas gerais state, brazil. bean vegetative growth and grain yield of two cultivars were evaluated. samples at 12, 22, 36, 51, 65 and 76 days after emergence were collected to determine foliar area, biomass of different aerial components, foliar area index, absolute growth and net assimilation rates. grain yield and its components (number of plants per area, number of pods per plant, number of grains per pod and average mass of one hundred grains) were determined at 80 days after emergence (harvest). vegetative growth of the two cultivars was similar, although the ouro negro cultivar had higher accumulation rates of total dry matter, absolute growth rate, foliar area index and net assimilation rate. relative growth rate was higher in brs mg talism? cultivar.
Proposta de modelagem n?o-linear do desempenho germinativo de sementes de milho híbrido
Gazola, Sebasti?o;Scapim, Carlos Alberto;Guedes, Terezinha Aparecida;Braccini, Alessandro de Lucca e;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011005000022
Abstract: this research was developed with the goal to adjust a nonlinear regression model to estimate seed germination performance of three commercial seed lots of hybrid maize oc 705, subjected to accelerated aging test at a temperature of 43oc. the logistic model y(t)=c/(1+exp (b (t-m))) was used to fit the data. measures of bias box and parametric intrinsic bends were used for the diagnosis of the model. the proposed model fits properly to seed germination percentage data of hybrid corn seeds for oc 705, for all seed lots. based on estimates of the parameters and fit quality, the seed lot three was identified as being the best for marketing, by presenting less reduction in seed germination power over time.
Teste de comprimento de plantulas sob estresse hídrico na avalia??o do potencial fisiológico das sementes de milho
ávila, Marizangela Rizzatti;Braccini, Alessandro de Lucca e;Scapim, Carlos Alberto;
Revista Brasileira de Sementes , 2007, DOI: 10.1590/S0101-31222007000200016
Abstract: the present study was carried out with the aim of evaluating the efficiency of the seedling length test under water stress in the evaluation of the physiological potential of corn seeds and verifying its relation with seedling emergence in the field. for this reason, corn seeds from five commercial lots were evaluated by means of the germination test (first count and final count), accelerated aging, modified cold, electrical conductivity, seedling emergence in the field and seedling length test under water stress, using different levels of osmotic potential (0; -0.1; -0.3; -0.6 and -0.9mpa) in manitol solution. there was a significant and positive correletionship between the seedling length test under water stress and emergence in the field and the seedling length test under water stress to -0.9mpa was the best to evaluate the physiological potential of corn seeds.
Germina??o de sementes e crescimento de plantulas de cultivares de milho-pipoca submetidas ao estresse hídrico e salino
Moterle, Lia Mara;Lopes, Pablo de Carvalho;Braccini, Alessandro de Lucca e;Scapim, Carlos Alberto;
Revista Brasileira de Sementes , 2006, DOI: 10.1590/S0101-31222006000300024
Abstract: the water availability and the water movement though the seeds are very important to seed germination and seedlings emergence, and these factors are influenced by soil water potential, soil texture and soil-seed contact surface. knowing that soil salinity limits the growth of several plants, the purpose of this study was to evaluate the effect of water and salinity stress on seed germination and seedling growth of three popcorn cultivars (iac 112, zélia e brs-angela). the seeds were sown in germination paper substrate imbibed in potassium chloride (kcl) solutions using five levels of osmotic potential: 0.0 (control); -0.1; -0.3; -0.6 e -0.9mpa. the percentage of normal seedlings at the first and final counting of the germination test, as well as root and shoot length and dry biomass of seedlings were used to evaluate seed physiological quality. the results indicated that the reduction of the osmotic potential reduced the popcorn seed performance. there was a differential behavior between the popcorn cultivars to the salinity stress tolerance promoted by the use of kcl. the seeds of brs-angela cultivar showed better germination and seedling growth than the others, when submitted to the same level of kcl osmotic potential.
Yield stability in maize (Zea mays L.) and correlations among the parameters of the Eberhart and Russell, Lin and Binns and Huehn models
Scapim Carlos Alberto,Oliveira Valter Rodrigues,Braccini Alessandro de Lucca e,Cruz Cosme Dami?o
Genetics and Molecular Biology , 2000,
Abstract: Assessment of the stability and adaptability of a genotype to different environments is useful for recommending cultivars for known conditions of cultivation and should be a requirement in breeding programs. Twenty maize (Zea mays L.) cultivars were tested at eight locations in Minas Gerais by the National Center for Maize and Sorghum Research (CNPMS) of the Brazilian Enterprise for Agricultural Research (EMBRAPA) for two years. The experiments involved a randomized complete block design in which three procedures were used to analyze cultivar stability and adaptability. The level of association among the parameters obtained by the three methods was assessed using Spearman's rank correlation. Hybrids 'DINA 170', 'G-96C', 'C 505', 'DINA 70' and 'C 435' had a mean yield greater than 6,000 kg/ha. Eberhart and Russell's regression coefficient (betai) was negative and correlated significantly (P < 0.01) with Lin and Binn's superiority index (Pi), indicating that the most responsive cultivars tended to have smaller Pi. Pi did not correlate with Huehn's nonparametric measurements Si(2) and Si(3) nor with Eberhart and Russell's sigmadi2 (P > or = 0.05), but correlated positively with Si(1) (P < 0.05), indicating that superior genotypes (with lower Pi) could also be stable, a finding not commonly reported in the literature. The stability parameters, Si(1), Si(2), Si(3) and sigmadi2, correlated positively among each other (P < 0.01), indicating that the stability estimates of the Huehn's nonparametric model did not add important information to those obtained by the Eberhart and Russell's method. Estimates from the Huehn's method, however, showed that stability estimates from nonparametric models are useful alternatives to parametric models. 'DINA 170', which had a greater general mean, was characterized as a cultivar adapted to favorable environments, and was among the most productive in the different environments assessed. The cultivar 'G-96C' showed medium adaptation to all environments (ideal cultivar) and had good stability. Cultivars 'C 505' and 'C435' were alternatives for 'G-96C'. 'DINA 70' showed good adaptability but had low stability.
Avalia o de cultivares de soja quanto à tolerancia ao estresse hídrico em substrato contendo polietileno glicol = Evaluation of soybean cultivars regarding tolerance to water stress in substrat containing polyethylene glycol
Leandra Regina Texeira,Alessandro de Lucca e Braccini,Décio Sperandio,Carlos Alberto Scapim
Acta Scientiarum : Agronomy , 2008,
Abstract: O trabalho teve por objetivo avaliar genótipos de soja quanto à tolerancia ao estresse hídrico, em substrato embebido com polietileno glicol (PEG 6000). Foram utilizadas sementes armazenadas por um ano, em condi es n o-controladas de laboratório das cultivares: CD 201,CD 202, CD 204, CD 205, CD 206, CD 208, CD 215, CD 216, Embrapa 48, BRS 132, BRS 184 e BRS 212. As avalia es consistiram em submeter às sementes aos testes de germina o, classifica o do vigor das plantulas, comprimento e biomassa seca das plantulas, em condi o deestresse hídrico, utilizando dois níveis de potencial osmótico (zero e -0,1 MPa). As cultivares foram agrupadas em diferentes classes de tolerancia à seca, em raz o da redu o percentual nas características avaliadas {% Redu o = [1-(Germina o ou Vigor em PEG 6000 / Germina o ou Vigor em água)] x 100}, pela técnica de análise de agrupamento, segundo o método hierárquico do vizinho mais próximo. Os genótipos de soja apresentaram comportamento diferenciado quanto à tolerancia à condi o de estresse hídrico. A cultivar Embrapa 48 apresentou a maior tolerancia à seca. Comparando os resultados obtidos pela análise multivariada e pelo método de agrupamento de Scott-Knott, observou-se boa concordancia entre os dois métodos naconstitui o dos grupos. O método utilizado e o procedimento estatístico adotado permitiram diferenciar as cultivares de soja em um curto período de tempo. The objective of this work was to evaluate the tolerance of soybean genotypes to water stress in substract soaked with polyethylene glycol(PEG 6000). The study used seeds stored for one year in laboratory uncontrolled conditions, of the following cultivars: CD 201, CD 202, CD 204, CD 205, CD 206, CD 208, CD 215, CD 216, Embrapa 48, BRS 132, BRS 184 and BRS 212. The soybean seeds were evaluated through germination tests, seedling vigor classification tests, seedling length and dry biomass, under water stress conditions using two levels of osmotic potential (0.0 and -0.1 MPa). Cultivars were them grouped in different levels of drought tolerance, by the percentage reduction in the appraised characteristics {% Reduction = [1-(Germination or Vigor in PEG 6000 / Germination or Vigor in water)] x 100}, for the technique of grouping analysis, according to the nearest neighbor hierarchical method. The soybean genotypespresented differentiated behavior regarding drought tolerance. The Embrapa 48 cultivar presented the greatest tolerance to water stress. Comparing the results obtained by multivariate analysis and by the Scott-Knott grouping method, good concordance was
Efeitos da intera o genótipos x ambientes no rendimento de gr os e nos teores de proteína de cultivares de soja = Effects of genotype x environment on grain yield and protein levels of soybean cultivars
Marco Ant?nio Sedrez Rangel,Andréia Minuzzi,Alessandro de Lucca e Braccini,Carlos Alberto Scapim
Acta Scientiarum : Agronomy , 2007,
Abstract: Este trabalho teve por objetivo estudar os efeitos da intera o genótipos por ambientes no rendimento de gr os e nos teores de proteína de três cultivares de soja no estado do Mato Grosso do Sul. As características avaliadas foram o rendimento de gr os e os teores de proteína bruta nas sementes. Os níveis de produtividade da safra 2002/03 foram elevados em fun o das condi es climáticas favoráveis. A safra 2004/05 caracterizou-se pela ocorrência de estresse hídrico durante o enchimento de gr os, resultando em menor rendimento de gr os na cultivar BRS 133. Em ambas as safras, verificou-se maior teor de proteína na cultivar BRS 206, evidenciando que o efeito de cultivar foi mais importante no teor de proteína. This work aimed to study the genotype x environment interactionon grain yield and protein levels of three soybean cultivars in the state of Mato Grosso do Sul. Grain yield and protein levels of soybean were evaluated during 2002/03 and 2004/05 cropping seasons. Grain yield in 2002/03 was satisfactory considering favorable climaticconditions. However, in 2004/05, grain yield of BRS 133 cultivar was low due to dry conditions during grain wadding. BRS 206 cultivar, on both cropping seasons, showed the highest levels of protein, which suggests that cultivar effect was more important for protein levels.
Sementes de soja produzidas em épocas de safrinha na regi o oeste do Estado do Paraná = Soybean seeds produced in out season in west of Paraná state
Leandro Paiola Albrecht,Alessandro de Lucca e Braccini,Marizangela Rizzatti ávila,Carlos Alberto Scapim
Acta Scientiarum : Agronomy , 2009,
Abstract: O cultivo de soja em safrinha é prática que se consolida, em termos de op o, para a entressafra, podendo servir também à produ o de sementes de soja. O presente trabalho foi conduzido com objetivo de avaliar o efeito de diferentes épocas de semeadura, na safrinha da soja, sobre a qualidade fisiológica e sanitária das sementes de três cultivares de soja, na regi o oeste do Estado do Paraná. Para tanto, foram conduzidos quatro ensaios, no ano de 2005, com delineamento em blocos completos casualizados, instalando-se um ensaio em quatro épocas de semeadura (15/01, 30/01, 15/02 e 15/03). Os cultivares estudados foram CD 202, CD 215 e CD 216. As sementes foram avaliadas por meio dos testes de germina o e de vigor (primeira contagem e envelhecimento acelerado) e a sanidade por meio do “blotter test”. As sementes produzidas no período de safrinha no ano de 2005, para ascondi es edafoclimáticas da regi o oeste do Estado do Paraná, n o foram favoráveis à obten o de sementes de alta qualidade fisiológica. The soybean culture in out season as a practice that consolidates in terms of an option between harvests, could also serve to the production of soybean seeds. The present work was carried out with the objective of evaluating the effect of sowing in out season, on physiological and sanitary quality of seeds of three soybeans cultivars, in west of Paraná state. For such way were conducted four assays in the year of 2005, arranged in a completely randomized blockdesign, with each assay sown in different dates (01/15, 01/30, 02/15 and 03/15). The studied cultivars were CD 202, CD 215 and CD 216. The seeds were evaluated by germination and vigor tests (first counting and accelerated aging) and of health. The seeds produced in “outseason” in the year of 2005, to the environmental conditions of the west of Paraná state were not favorable to the attainment of high physiological quality seeds.
Qualidade fisiológica e produtividade das sementes de milho tratadas com micronutrientes e cultivadas no período de safrinha = Physiological quality and yield of micronutrient-treated corn seed grown in the late season crop
Marizangela Rizzatti ávila,Alessandro de Lucca e Braccini,Carlos Alberto Scapim,Danilo Takara Martorelli
Acta Scientiarum : Agronomy , 2006,
Abstract: A aplica o de micronutrientes visando aumentar a produtividade tem apresentado resultados significativos, principalmente em regi es que adotam elevados níveis de tecnologia e manejo nas culturas. Com o objetivo de verificar o efeito da aplica o do fertilizante Stimulus PG. (20,0% de Zn; 3,0% de B; 1,0% de Mg e 1,0% de Mo), via tratamento de sementes, na produtividade e na qualidade fisiológica das sementes de milho produzidas no período de safrinha conduziu-se um experimento utilizando-se sementes de cinco híbridos comerciais de milho (AG-9010, BALU-184, AS-32, CD-304 e FORT), as quais foram tratadas com Stimulus PG. (200 g para cada 100 kg de sementes). O experimento foi instalado no delineamento em blocos completos casualizados, com 4repeti es e 2 tratamentos arranjados no esquema de parcelas subdivididas, em que as sementes tratadas e n o-tratadas constituíram as subparcelas e os híbridos de milho, as parcelas. Por meio do rendimento das sementes nas unidades experimentais, foram calculadas as produtividades em kg ha-1 e a massa de mil sementes. A qualidade fisiológica das sementes foi avaliada por meio dos testes de germina o (primeira contagem e contagem final), envelhecimento acelerado, frio modificado e condutividade elétrica. Por meio dos resultados obtidos, verificou-se que n o houve efeito significativodo tratamento com micronutrientes na produtividade e na massa de mil sementes de todos os híbridos testados. No entanto, houve aumento na germina o e no vigor das sementes produzidas nas subparcelas que receberam tratamento de sementes com micronutrientes, sendo estes resultados variáveis em fun o do híbrido avaliado e do teste empregado. The use of micronutrients in order to increase yield has shown significant results, mainly in regions which adopt high levels of technology and management on cultures. Thus, the experiment was carried out aiming to verify the effects of the application of the fertilizer Stimulus PG. (20.0% of Zn; 3.0% of B; 1% of Mg and 1.0% of Mo), via seed treatment, on the yield and physiological quality of corn seeds grown in the late season crop (fall/winter). Seeds of fivecommercial corn hybrids were used (AG-9010, BALU-184, AS-32, CD-304 and FORT) and treated with Stimulus PG. (200g dose for each 100 kg seeds) before sowing. The experiment was set in a randomized complete block design containing four repetitions and two treatments arranged in sublots. The treated and non-treated seeds constituted the sublots and the corn hybrids, the plots. The productivity (given by kg ha-1 and the weigh of 1000 seeds) was calcula
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