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| Registros recuperados: 231 | |
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| Braccini, Alessandro de Lucca e; UEM, Maringá; Stülp, Marcibela; UEM; Albrecht, Leandro Paiola; UEM; Ávila, Marizangela Rizzatti; UEM; Scapim, Carlos Alberto; UEM; Ricci, Thiago Toshio; UEM. |
| Competition experiments were installed at the COODETEC unit in Palotina, Paraná State, with the objective of evaluating the influence of the cultivation of soybean in succession to a second crop season on different sowing dates on the agronomic traits and seed yield in both cultures. The experiment consisted of four field replicates, arranged in a completely randomized block design and carried out in two agricultural years (2003/2004 and 2004/2005). The individual blocks were comprised of three early-maturing soybean cultivars (CD 202, CD 215 and CD 216) sowed on five different dates (9/15, 9/30, 10/15, 10/30 and 11/15) and also three corn hybrids (CD 305, CD 306 and CD 308) that were sowed on different dates (1/30, 2/15, 3/1, 3/15 and 3/30). Data were... |
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Palavras-chave: Off-season corn sowing; Climate adverse conditions; Cultivars; Hybrids fitotecnia off-season corn sowing; Climate adverse conditions; Cultivars; Hybrids. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/8064 |
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| Guimarães, Isaías Porfírio; DoVale, Júlio César; Antônio, Rafaela Priscila; Aragão, Fernando Antônio Souza de; Nunes, Glauber Henrique de Sousa. |
| The aims of this study were to i) identify the influence of the GxE interaction in the selection of inbred lines of melon, and ii) test the efficiency of different indexes in the selection of inbred lines with a higher yield potential and better quality fruit. For these purposes, 98 inbred lines of yellow melon and two commercial controls, Vereda and AF-646, were evaluated in a randomized block design with two replications, at the conditions present in Mossoró and Baraúna. Analyses of the following traits were performed: fruit yield, mean fruit weight, pulp thickness, pulp firmness and soluble solids content. A complex portion of the GxE interaction was predominantly detected for all traits. The recommendation in this case is to promote selection in each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.05-9 Cucumis melo L; Segregant populations; Genetic gains; Inbred lines extraction; Hybrids; Selection indexes Melhoramento Vegetal. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/26045 |
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| Lima, Luciana Oliva Barbosa; Pires, Daniel Ananias de Assis; Moura, Marielly Maria Almeida; Rodrigues, José Avelino Santos; Tolentino, Daniella Cangussú; Viana, Maria Celuta Machado. |
| This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (> 44 ton ha-1) and dry matter (> 17 ton ha-1), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (> 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ZOOTECNIA; NUTRIÇÃO E FORRAGICULTURA chemical composition; Hybrids; Productivity. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32356 |
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| Tolentino, Daniella Cangussú; Rodrigues, José Avelino Santos; Pires, Daniel Ananias de Assis; Veriato, Florence Taciana; Lima, Luciana Oliva Barbosa; Moura, Marielly Maria Almeida. |
| The objective was to select from among 24 sorghum genotypes the superior ones for silage production. The study was conducted in the experimental field of Embrapa Maize & Sorghum, in the municipality of Sete Lagoas, Minas Gerais State. It used 24 forage sorghum genotypes, 21 being hybrids from the crossing of grain sorghum females and forage males (12F38019, 12F38006, 12F40006, 12F40005, 12F40019, 12F37016, 12F37005, 12F37043, 12F39006, 12F39005, 12F39019, 12F38005, 12F38007, 12F37007, 12F39007, 12F40007, 12F38014, 12F37014, 12F39014, 12F40014 e 12F38009) and three witnesses: BRS 610, BRS 655 and Volumax. It estimated productivity per area, in vitro dry matter digestibility, and assessed the bromatological and fermentation characteristics of sorghum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zootecnia (5.04.00.00-2) digestibility; Grain sorghum; Hybrids; Fermentation quality; Nutritional value.. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29030 |
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| Toledo,Vagner de Alencar Arnaut de; Nogueira-Couto,Regina Helena. |
| This experiment was carried out to study the internal temperature regulation of a colony of Africanized honey bees (AFR), compared with hybrid Caucasian (CAU), Italian (ITA), and Carniolan (CAR) bees, during the period of one year and different size hives located in a sub-tropical region. The instant internal temperature, 33.7 ± 1.5° C for the AFR, 33.5 ± 1.4° C for the CAU, 33.7 ± 1.5° C for the ITA and 33.8 ± 1.4° C for the CAR, did not show any significant difference (P>0.05). The maximum temperature (36.1 ± 2.3° C) was statistically different (P<0.05) from the minimum (27.6 ± 5.3° C). There was no difference (P>0.05) in the mean internal temperature, between the nucleus (31.7 ± 6.3° C) and the brood nest (32.1 ± 5.3° C) measured... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Temperature; Honey bee; Apis; Thermoregulation; Hive; Hybrids. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400007 |
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| Mazzani,Claudio; Borges,Orángel; Luzón,Odalís; Barrientos,Venancio; Quijada,Pablo. |
| Fusarium moniliforme (FM) incidence and fumonisins (FUM) content were determined in white kernel samples of maize hybrids, harvested in farms of Guárico and Portuguesa states, Venezuela. FM incidence was estimated in subsamples placed on a malt-salt-agar medium. Values in the range of 0-15 % were considered low, from 15-30% intermediate, and more than 30% high. FUM content was quantified through specific immunoassay (Fumonitest, VICAM Sci. Tech., USA) and values above 1 ppm were considered high. The hybrids were compared using a completely randomized design and results were subjected to analysis of variance and mean comparisons. The correlation between FUM content and FM incidence was also estimated. FM and FUM were detected in all of the 89 samples. Mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fusarium moniliforme; Fumonisins; Venezuelan maize; Hybrids. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400018 |
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| Mariani,Josiane Aparecida; Nava,Gilmar Antônio; Paulus,Dalva. |
| ABSTRACT: This study aimed to characterize the phenology and thermal requirements of grapevine cultivars Bordô, BRS Carmem, BRS Lorena, BRS Magna, BRS Rubea, BRS Violeta, Concord, Concord Clone 30, Isabel, Isabel Precoce, Moscato Bailey, Moscato Embrapa, Niagara Branca, Niagara Rosada, and Seibel 5455 grafted on Paulsen 1103. The study was conducted in the fruit growing sector of the Federal Technological University of Paraná, Câmpus Dois Vizinhos, Paraná State, Brazil, during the cycles of 2015/2016 and 2016/2017. The experimental design was completely randomized, with four replicates and two evaluated plants per plot. Plants were grown in a vertical trellis system and spur pruned with two buds. Evaluations of phenology and thermal requirements were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca; Hybrids; Cycle; Heat. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000900203 |
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| Guzmán Moreno, Marco Antonio. |
| Se realizaron cruzas a partir de accesiones de jitomate riñón, de Hidalgo, Puebla y Tabasco, con resistencia de tipo cuantitativa a Fusarium oxysporum, que fungieron como receptores, con un genotipo comercial de tipo saladet (Variedad. Río Grande), que fue el donador de polen, para obtener híbridos resistentes y con frutos de forma redonda y lisa. También se realizó selección a partir de jitomates riñón por forma redonda, lisa y con resistencia a enfermedades. Se realizó el avance generacional de los híbridos así como de los genotipos seleccionados, posteriormente se sembraron en campo las cruzas en F2, genotipos seleccionados, genotipos criollos no seleccionados (testigo) y el testigo general (Río Grande), para conocer su reacción frente a los patógenos... |
| Tipo: Tesis |
Palavras-chave: Lycopersicon esculentum; Hibridos; Selección masal recurrente; Resistencia horizontal; Resistencia cuantitativa; Resistencia durable; Maestría; Fitopatología; Hybrids; Kidney shaped tomatoes; Recurrent mass selection; Horizontal resistance; Durable resistance. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1636 |
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| León Velasco, Humberto. |
| En el Colegio de Postgraduados se han formado dos generaciones de híbridos y progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres variables; y (f) comparar... |
| Tipo: Tesis |
Palavras-chave: Sorghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío; Doctorado; Genética; Combining ability; Hybrids; Cold tolerance. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1207 |
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| Bison,Odair; Ramalho,Magno Antonio Patto; Rezende,Gabriel Dehon Sampaio Peçanha; Aguiar,Aurélio Mendes; Resende,Marcos Deon Vilela de. |
| In Brazil, eucalyptus breeding programs for cellulose production has used two species, Eucalyptus grandis and Eucalyptus urophylla. Nevertheless, it would be useful to introgress alleles from other species to improve wood quality and volume. The objective of this research was to evaluate the hybrid potential of elite clones of E. grandis and E. urophylla from the Aracruz Celulose Company S. A. with Eucalyptus globulus clones. To do so, six elite clones were crossed with ten E. globulus clones in a half-diallel mating design. The resulting hybrid combinations as well as the four check clones were evaluated in randomized complete block experiments with single plant plots and 40 replicates from September to October 2001 at three Brazilian sites, Aracruz and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diallel; Eucalyptus breeding; Hybrids; Quantitative genetics; Wood quality. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300019 |
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| Nogueira,Douglas Willian; Maluf,Wilson Roberto; Figueira,Antonia dos Reis; Maciel,Gabriel Mascarenhas; Gomes,Luiz Antonio Augusto; Benavente,Cesar Augusto Ticona. |
| The aim was to assess heterosis in a set of 16 summer-squash hybrids, and evaluate the combining capacity of the respective parental lines, which differed as to the degree of parthenocarpy and resistance to PRSV-W (Papaya Ringspot Virus-Watermelon strain). The hybrids were obtained using a partial diallel cross design (4 x 4). The lines of parental group I were 1 = ABX-037G-77-03-05-01-01-bulk, 2 = ABX-037G-77-03-05-03-10-bulk, 3 = ABX-037G77-03-05-01-04-bulk and 4 = ABX-037G-77-03-05-05-01-bulk, and of group II, 1' = ABX-037G-77-03-05-04-08-bulk, 2' = ABX-037G-77-03-05-02-11-bulk, 3' = Clarice and 4' = Caserta. The 16 hybrids and eight parental lines were evaluated for PRSV-W resistance, parthenocarpic expression and yield in randomized complete-block... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita pepo; Heterosis; Hybrids; Potyvirus; Papaya ringspot virus. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400014 |
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| Fonteles,Soraia B.A.; Fernandes,Flora M. de C.; Lopes,Carlos E.; Kulikoski,Roberto; Kulikoski,Jussara M.; Almeida-Toledo,Lurdes F. de. |
| A sample consisting of 2 Ctenopharyngodon idella (grass carp) females, 2 Aristichthys nobilis (bighead carp) males, and 10 interspecific hybrids was analyzed using a multidisciplinary approach. The 10 hybrids were the only surviving specimens of a crossbreeding experiment. The cytological approach, involving the measurement of the largest axis of the erythrocytes, revealed that the parental species were diploid, whereas, among the hybrids, eight individuals were triploid, and two were diploid. Two of the triploid individuals were analyzed cytogenetically and showed 2n = 3X = 72 chromosomes. Using the biochemical and molecular approaches, it was possible to confirm that one of the C. idella specimens was the true mother of the hybrids. Those data also... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SPAR; Carps; Hybrids. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100030 |
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| Registros recuperados: 231 | |
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