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| Registros recuperados: 127 | |
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| Galindo,Fernando S.; Teixeira Filho,Marcelo C. M.; Buzetti,Salatiér; Boleta,Eduardo H. M.; Rodrigues,Willian L.; Rosa,Alexandre R. M.. |
| ABSTRACT Boron is one of the most limiting micronutrients in the grain production system in Brazil. Thus, the objective of this study was to evaluate the effects of the application forms and doses of boron on the concentration of this nutrient in the leaves, straw, and grains of wheat, as well as the production components and grain yield. The residual effect of boron in the soil was also evaluated. An experiment was conducted in a no-tillage system in Oxisol with clay texture in Selvíria, Mato Grosso do Sul. The experimental design was a randomized block design with four replicates arranged in a 4 x 3 factorial scheme. Four doses of boron (0, 1, 2, and 4 kg ha-1) were applied with a boric acid source (B = 17%) and three application forms: a) during the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Borated fertilization; Boron time application; Boron concentration in aerial part; Grain yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900597 |
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| Silva,Raphael R.; Zucareli,Claudemir; Fonseca,Inês C. de B.; Riede,Carlos R.; Gazola,Diego. |
| ABSTRACT The aim of this study was to evaluate the influence of nitrogen (N) fertilization, environment and cultivars on the protein concentration, sodium dodecyl sulfate sedimentation test (SDSS) volume and falling number in wheat. The experimental design was a randomized blocks in split plot scheme with four repetions. Four wheat genotypes were evaluated under six N managements in four enviroment (subplots). The wheat genotypes evaluated were IPR Catuara TM, BRS Gaivota, Quartzo and CD 120. Protein concentration, SDS sedimentation test, falling number and grain yield were evaluated. Combined analysis of variance for the four environment was performed and means were compared by Tukey test at p ≤ 0.05. The environmental effect is greater than the genotype... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Grain yield; Urea; Ammonium sulfate. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100826 |
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| Garcia,Nayara F. S.; Arf,Orivaldo; Portugal,José R.; Peres,Amanda R.; Rodrigues,Mayara; Penteado,Mariele de S.. |
| ABSTRACT The study was carried out in Selvíria-MS, in the 2011/12 and 2012/13 agricultural years, aiming to evaluate the efficiency of Azospirillum brasilense in nitrogen fixation in upland rice, as a function of doses and application methods of the inoculant containing this diazotrophic bacterium. The experimental design was randomized blocks, arranged in a 4 x 4 factorial scheme, with 4 doses of inoculant (control without inoculation, 100, 200 and 300 mL of the commercial product ha-1) and 4 application methods (seed inoculation, application in the sowing furrow, soil spraying after sowing, and foliar spraying at the beginning of plant tillering), with 4 replicates. During the experiment, the agronomic characteristics, production components and yield of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa L.; Diazotrophic; Cv. IAC 202; Nitrogen fixation; Grain yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100990 |
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| Ben,Luis H. B.; Peiter,Marcia X.; Robaina,Adroaldo D.; Kirchner,Jardel H.; Mezzomo,Wellington; Pimenta,Bruna D.. |
| ABSTRACT The choice of a maize hybrid, considering the technology level and irrigation management, contributes to the improvement of the plant productivity and water use efficiency (WUE). Thus, the objective of this study was to evaluate the effects of irrigation depths on production components, grain yield, technical efficiency, and WUE in maize hybrids. The experiment was conducted in Santiago, RS state, Brazil, in the 2015/2016 and 2016/2017 crop seasons, using a randomized block design in factorial scheme, consisting of five irrigation depths (0, 50, 75, 100 and 125% of crop evapotranspiration - ETc) and four maize hybrids in crop season I (2015/2016), and six maize hybrids in crop season II (2016/2017). The number of ears per plant, number of grains... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water deficit; Zea mays L.; Water use efficiency; Genotypes; Grain yield. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700524 |
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| Corrêa,Rafael D. G.; Furlani,Carlos E. A.; Zerbato,Cristiano; Oliveira,Danilo T. de; Noronha,Rafael H. de F.; Warikoda,Newton K.. |
| ABSTRACT Among the factors that may influence corn yield are sowing operation direction and plant population, since they alter the shade index between crop rows, and consequently the efficiency of interception of the photosynthetically active radiation by the leaves of plants. The aim of this study was to evaluate the influence of sowing direction and plant populations on P2830VYH hybrid corn yield. The experiment was conducted at the facilities of FCAV-UNESP, latitude 21º 14’ S and longitude 48º 16’ W in Jaboticabal (SP). The treatments were composed of three sowing directions (North-South, Northeast-Southwest, and East-West) and three population densities (40,000, 60,000 and 80,000 plants ha-1). The treatment with 80,000 plants ha-1 had the lowest cost... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L.; Sowing configuration; Plant population; Grain yield. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300183 |
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| Krüger,Cleusa A. M. B.; Medeiros,Sandro L. P.; Silva,José A. G. da; Dalmago,Genei A.; Valentini,Ana P. F.; Wagner,Juliano F.. |
| ABSTRACT The objective of this study was to identify the plant arrangement that allows greater grain yield with adaptability and stability of rapeseed hybrids. The experiments were conducted in randomized block design with four replicates and the 12 treatments consisted of combination of inter-row spacings (0.20, 0.40, and 0.60 m) and plant densities (20, 40, 60 and 80 plants m-2). The hybrids Hyola 432 (early cycle) and Hyola 61 (medium cycle) were cultivated in three growing seasons (2008, 2009 and 2010). Grain yield was evaluated based on the parameters adaptability and stability according to the models of Wricke and Eberhart & Russell. The plant arrangement for obtaining higher grain yield depends on the cultivated genotype. Higher grain yield was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus L.; Inter-row spacing; Plant density; Grain yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100036 |
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| Rocha,Maurisrael de Moura; Damasceno-Silva,Kaesel Jackson; Menezes-Júnior,José Ângelo Nogueira de; Carvalho,Hélio Wilson Lemos de; Costa,Antônio Félix da; Lima,João Maria Pinheiro de; Santos,João Felinto dos; Bertini,Cândida Hermínia Campos de Magalhães; Passos,Adriana Rodrigues; Morais,Otoniel Magalhães. |
| ABSTRACT Cowpea is grown in different environmental conditions of the Northeast region of Brazil. Thus, selecting and developing cultivars with high yield, stability, and adaptability for this region is necessary due to the genotype × environment interaction. The objective of this work was to select cowpea lines of semi-prostrate plant simultaneously for high yield, adaptability, and genotypic stability in the Northeast region of Brazil by the REML/BLUP procedure. Twenty semi-prostrate genotypes-16 lines and four cultivars-were evaluated in 36 environments of the Northeast region from 2013-2015. The experiments were carried out under rainfed conditions in a completely randomized block design with four replications. The adaptability and genotypic stability... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Grain yield; Genotype × environment interaction; Mixed models. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500879 |
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| Costa Junior,Manoel de Jesus Nunes da; Bastos,Edson Alves; Cardoso,Milton José; Andrade Júnior,Aderson Soares de. |
| ABSTRACT The cowpea is of great socioeconomic importance in the North, Northeast and Mid-West of Brazil, and its irrigated farming has recently been on the increase in these regions. The aim of this study was to evaluate the agronomic performance of the cowpea 'BRS Tumucumaque' for different row spacings and irrigation depths, under the conditions of soil and climate of Teresina, in the State of Piauí. The experiment was carried out from August to November 2014, in a Yellow Argisol at the Experimental Area of Embrapa Meio-Norte in Teresina. The experimental design was of randomised blocks in subdivided lots, with four replications. The treatments consisted of five irrigation depths (40% ETo, 70% ETo, 100% ETo, 130% ETo and 160% ETo) in the main plot, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Grain yield; Irrigation management; Plant density; BRS Tumucumaque. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500774 |
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| Suzukawa,Andréia Kazumi; Pereira,Carolina Bertuzzi; Garcia,Mayara Mariana; Contreras-Soto,Rodrigo Iván; Zeffa,Douglas Mariani; Coan,Marlon Mathias Dacal; Scapim,Carlos Alberto. |
| ABSTRACT The number of sweet corn cultivars adapted to the climatic conditions and with agronomic traits recommended to the Brazilian market is still limited. Thus, the aim was to investigate the general and specific combining ability (GCA and SCA, respectively) in relation to the grain yield (GY) and total soluble solid (TSS) contents of seven lines of sweet corn (su1) and eight lines of supersweet corn (sh2) by diallel crosses. For TSS, the inbred lines SC6 and SC7 of sweet corn, and SSC7 and SSC8 of supersweet corn showed higher GCA effect. For GY, the inbred lines SC1 and SC2 of sweet corn and SSC4 and SSC6 of supersweet corn showed higher GCA effect. For TSS in sweet corn, the hybrids '4 × 6' and '1 × 7' showed the superior Ŝij estimates across all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays L; Saccharata; General and specific combining ability; Grain yield; Total soluble solids. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400607 |
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| Melo,Francisco de Brito; Cardoso,Milton José; Andrade Júnior,Aderson Soares de; Ribeiro,Valdenir Queiroz. |
| ABSTRACT Zinc (Zn) is an essential micronutrient for plants, due to its role as a functional, structural, or regulatory cofactor in a large number of enzymes. The element is necessary for the synthesis of tryptophan, which is a precursor of indoleacetic acid. The aim of this study was to evaluate the behavior of two cowpea cultivars fertilized with four doses of Zn (0.0, 2.0, 4.0, and 6.0 kg of Zn ha-1) regarding dry grain yield (PGS), in addition to quantifying leaf and grain Zn content and grain crude protein. The experiment was conducted in the town of Brejo, in the state of Maranhão, Brazil. A 4 x 2 factorial scheme was used with four replications. Response functions were adjusted by calculating the Zn doses which provided a maximum technical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mineral nutrition; Vigna unguiculata (L.) Walp; Grain yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500739 |
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| Rocha,Maurisrael de Moura; Damasceno-Silva,Kaesel Jackson; Menezes-Júnior,José Ângelo Nogueira de; Carvalho,Hélio Wilson Lemos de; Costa,Antônio Félix da; Lima,João Maria Pinheiro de; Santos,João Felinto dos; Bertini,Cândida Hermínia Campos de Magalhães; Passos,Adriana Rodrigues; Morais,Otoniel Magalhães. |
| ABSTRACT Cowpea is grown in the various soil and climatic conditions of the Northeast region of Brazil. Thus, selecting and developing cultivars with high yield, stability, and adaptability for this region is necessary due to the genotype × environment interaction. The objective of this work was to select cowpea lines of semi-erect plant simultaneously for high yield, adaptability, and genotypic stability in the Northeast region of Brazil by the REML/BLUP procedure. Twenty semi-erect genotypes-15 lines and five cultivars-were evaluated in 37 environments of the Northeast region from 2013-2015. The experiments were carried out under rainfed conditions in a randomized complete block design with four replications. The adaptability and genotypic stability were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Grain yield; Genotype × environment interaction; Mixed models. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500862 |
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| Aguiar,Aurélio Mendes; Carlini-Garcia,Luciana Aparecida; Silva,Adelmo Resende da; Santos,Mateus Figueiredo; Garcia,Antonio Augusto Franco; Souza Jr.,Cláudio Lopes de. |
| The utilization of diallel crosses for identification of superior combinations is a common practice in maize (Zea mays L.) breeding programs. This methodology allows the estimation of the combining ability of genotypes being evaluated. In this work, five inbred lines were evaluated as to their general (GCA) and specific (SCA) combining abilities, by using a complete diallel scheme. The single-crosses produced between these inbred lines were evaluated in seven environments, along with two checks, by using a randomized complete block design. Traits analized were: grain yield, plant height, ear height, ear placement, and prolificacy. A diallel analysis was carried out, following an adaptation of Griffing's method IV, in addition to hybrid stability and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diallel crosses; Genotype vs. environment interaction; Grain yield; Adaptability. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100013 |
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| Lanna,Anna Cristina; Coelho,Gesimária Ribeiro Costa; Moreira,Alécio Souza; Terra,Thiago Gledson Rios; Brondani,Claudio; Saraiva,Gabriel Rios; Lemos,Frederico da Silva; Guimarães,Paulo Henrique Ramos; Morais Júnior,Odilon Peixoto; Vianello,Rosana Pereira. |
| ABSTRACT: Upland rice is cultivated mostly in Latin America and Africa by small farmers and in areas with risk of dry spells. This study evaluated morphophysiological mechanisms of upland rice associated to drought adaptation. A set of 25 upland rice genotypes were grown in a plant phenotyping platform during 2015 and 2017 under regular irrigation and water restriction. We evaluated morphophysiological traits in shoots (vegetative structures growth, gas exchange, water use efficiency, carboxylation efficiency, water status) and roots (length, surface area, volume and diameter), as well as agronomic traits (grain yield and its components). There was a reduction in grain yield by up to 54 % and 58 % in 2015 and 2017, respectively, under water deficit. Five... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain yield; Gas exchange; Water status; Root system; Vegetative morphology. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000500603 |
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| Salomon,Marcus Vinicius; Camargo,Carlos Eduardo de Oliveira; Petinelli Jr.,Armando; Azevedo Filho,Joaquim Adelino de. |
| The anther culture technique has been used in breeding programs to obtain haploid plants from hybrid plants of F1 generation and to develop more efficiently wheat cultivars. To study the behavior of dihaploid wheat lines and two check cultivars, IAC-24 and IAC-289, experiments were carried out under sprinkler irrigation at Monte Alegre do Sul, SP, Brazil, in an Haplic Acrisol and at Tatuí, SP, Brazil, in a Rhodic Ferrasol, during the years 1999 and 2000. Genotypes were evaluated for grain yield, 100 grain weight, plant height, resistance to leaf rust (Puccinia recondita f. sp. tritici Rob. Desm.) and lodging. The genotypes were also evaluated under laboratory conditions for their Al+3 toxicity tolerance using nutrient solutions. The line 8, originated from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain yield; 100 grain weight; Plant height; Lodging; Tolerance to aluminum. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100007 |
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| Lima,Dayane Cristina; Abreu,Ângela de Fátima Barbosa; Ferreira,Ricardo Augusto Diniz Cabral; Ramalho,Magno Antonio Patto. |
| A common bean (Phaseolus vulgarisL.) cultivar must combine desirable genotypes for several traits in order to be accepted by producers and consumers. This study aimed to evaluate selection efficiency when segregating bean populations for traits, by means of a selection index, in order to obtain superior progenies for traits considered. A total of 16 populations from the F4 and F5generations were evaluated in 2011 and 2012, respectively. The traits evaluated were plant architecture, plant disease, grain type and yield. Using standard scores (Z), the sum of the four traits (∑Z) was obtained and, based on this information, the best populations were identified. The evaluation of selection effectiveness was performed on 31 progenies from each population. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant architecture; Plant disease; Grain yield. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000200132 |
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| Valério,Igor Pirez; Carvalho,Fernando Irajá Félix de; Oliveira,Antônio Costa de; Benin,Giovani; Souza,Velci Queiroz de; Machado,Amauri de Almeida; Bertan,Ivandro; Busato,Cyrano Cardoso; Silveira,Gustavo da; Fonseca,Daniel Andrei Rob. |
| Seeding density adjustments is one of the practices that most influence grain yield, as well as other agronomic traits. Therefore, the objective of this study was to determine the ideal plant stand to achieve the maximum grain yield in genotypes showing differential tillering ability. Also, to establish the associations between the genotypes used with tillering and other agronomically important traits as weight of a thousand grains. Two experiments were conducted in 2005 and 2006 in Capão do Leão, Rio Grande do Sul state, Brazil. Five low (JURITI, BR 18, CEP 29, BR 18 and CD 108) and five high (CD 114, SAFIRA, FIGUEIRA, BRS 177 and UMBU) tillering potential wheat cultivars were tested for two years on a split-plot design. The results indicate the need for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Grain yield; Number of fertile tillers; Plant stand. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100004 |
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| Registros recuperados: 127 | |
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