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| Registros recuperados: 14 | |
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| Vieira,Jairo V; Silva,Giovani Olegario da; Boiteux,Leonardo S. |
| The estimate of the genetic parameters associated with processing (fresh-cut) traits, including root length (RL), is crucial for carrot breeding programs in tropical areas. The cultivar Alvorada is an important germplasm due to its resistance to nematodes, leaf blight, heat-tolerance, and high carotenoid content. Seventy-four 'Alvorada' half-sib progenies were evaluated during the summer of 2005 in the Federal District, Brazil, in a randomized complete block design with three replications. Thirteen competitive plants in each block were randomly selected and evaluated and/or classified for RL and for number of leaves (NL), leaf length (LL), root tip type (RT), root mass (RW), crown shape (CS), root diameter (RD), and xylem diameter (XD). The Pearson's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Heritability; Genetic correlation; Path analysis; Root length. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100002 |
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| Silva,Giovani Olegario da; Pereira,Arione da S; Azevedo,Fernanda Q; Carvalho,Agnaldo DF de; Pinheiro,Jadir B. |
| ABSTRACT The demand for cultivars suitable for processing, especially as frozen French fries, is increasing in Brazil. The Canadian expertise is high regarding the development of cultivars with processing characteristics; however, the growing conditions in Canada are quite different from those observed in Brazil. Thus, the aim of this work was to evaluate the performance of Canadian potato clones for their tuber yield, frying quality, plant vigor, and plant cycle, as potential new cultivars or to be used as a new source of variability for crosses. The experiments were conducted in Pelotas-RS and Canoinhas-SC, Brazil, in spring 2017. A set of 12 advanced Canadian potato clones from the Centre de Recherche Les Buissons, QB, Canada, were compared to three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Tuber yield; Frying color; Specific gravity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400423 |
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| Melo,Raphael Augusto de C; Silva,Giovani Olegario da; Vendrame,Larissa PC; Pilon,Lucimeire; Guimarães,Jorge Anderson; Amaro,Geovani Bernardo. |
| ABSTRACT Production of purple-fleshed sweetpotatoes, source of anthocyanins, pigments with high antioxidant activities, is expected to be extended during the upcoming years, as there is a strong trend to market products promising improved health. This study aimed to evaluate yield, postharvest quality and pest resistance of roots of purple-fleshed sweetpotatoes. Six genotypes (BGBD 0005, BGBD 0080, BGBD 1261, BGBD 1399, BGBD 1402 and BGBD 1405) and the cultivars Beauregard and Brazlândia Roxa as controls were evaluated during two seasons 2018 (Experiment 1) and 2019 (Experiment 2), in Brasília-DF, Brazil. The experiments were conducted in a complete randomized blocks design with four replications, with experimental plots consisting of two rows of six... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomea batatas; Marketable roots; Appearance; Insect damage; Soluble solids; Dry matter content. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000400439 |
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| Onoyama,Silvia S; Silva,Giovani Olegario da; Moita,Antônio W; Vieira,Jairo V; Lopes,Carlos Alberto; Souza,Geraldo da S e. |
| Procurou-se verificar quais são as características mais importantes da raiz de cenoura sob a ótica dos agentes da cadeia produtiva de cenoura. Para tanto, foram realizadas visitas e entrevistas com produtores, empresas de semente, vendedores de insumos, lavadores, processadores, atacadistas e gerentes de supermercados, comparando-se esses resultados com os da pesquisa de percepção de consumidores de supermercados do Distrito Federal. Em ambos os casos, utilizou-se questionário estruturado com perguntas fechadas nas quais os entrevistados classificaram os atributos segundo notas que variaram de 1 (nenhuma importância) a 5 (muito importante). Para verificar a ordenação de importância dos atributos e os contrastes das médias, utilizou-se o método estatístico... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota L; Melhoramento; Pesquisa de mercado. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300022 |
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| Carmona,Paula Andrea O; Pinheiro,Jadir B; Amaro,Geovani Bernardo; Silva,Giovani Olegario da; Peixoto,José Ricardo; Cares,Juvenil Enrique. |
| ABSTRACT One of the main obstacles for food production in many developing countries, as in Brazil, is the damage caused by root-knot nematodes, mainly those belonging to the genus Meloidogyne. This study aimed to assess the resistance levels of 44 sweet potato genotypes to M. javanica, M. incognita race 1 and M. enterolobii. These researches were carried out in 2014, under greenhouse conditions in Brasília-DF, Brazil. A completely randomized design with six replicates of one plant/plot/treatment was used. We determined the gall index (GI) and egg mass index (EMI) in the root system of each plant, the number of eggs and juveniles per gram of root with galls and the nematode reproduction factor. M. javanica was less aggressive and reproduced in only 9.09% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomoea batatas; Plant breeding; Reproduction factor; Genetic resistance. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200126 |
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| Pinheiro,Jadir B; Silva,Giovani Olegario da; Biscaia,Danielle; Macedo,Amanda G; Correia,Núbia Maria. |
| ABSTRACT Root-knot nematodes cause great damage to vegetable crops in Brazil, besides having a large range of host plants, such as weeds. Weeds can maintain the inoculums or even favor the multiplication of these nematodes. In this study we evaluated the reaction of selected weed species, present in a vegetable production area, to root-knot nematodes Meloidogyne incognita and M. enterolobii. The trials were conducted in a greenhouse at Embrapa Hortaliças, Brasília-DF, in a completely randomized design with six replicates. Fifteen weed species were evaluated for M. incognita race 1, and 16 weed species were evaluated for M. enterolobii. Two tomato cultivars were evaluated as resistance and susceptibility standards. Gall index (IG), egg mass index (IMO),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed host; Reproduction factor; Dissemination. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400445 |
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| Carvalho,Agnaldo Ferreira de; Silva,Giovani Olegario da; Magalhães,Caroline da Cruz. |
| ABSTRACT The knowledge about harvest time in carrots is important to determine the moment when the farmer will be able to obtain higher yield and quality of roots. Thus, this work aimed to verify the moment of harvest, aiming to maximize yield and the quality of roots. From November 2018 to March 2019, three cultivars, Brasília, BRS Planalto and HX4098 were evaluated in Brasília-DF in DBC design with three replications, in a split plot scheme, in which the treatments of the subplots were the harvest times at 80, 90, 100, 110 and 120 days after sowing (DAS). The experiment was installed on November 20, 2018, in 1 m2 useful area seedbeds. Sowing was done manually, in transverse grooves, with double spacing rows 10 x 20 cm, and 5 cm spacing between plants.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Root yield; °Brix; Root length; Root diameter. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300319 |
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| Silva,Giovani Olegario da; Pereira,Arione da S; Carvalho,Agnaldo DF; Azevedo,Fernanda Q. |
| ABSTRACT The objective of this research was to evaluate advanced potato clones for tuber yield, frying quality, plant vigor, and maturity, grown from minituber seeds, and to assess correlations between these traits. Eight advanced potato clones of Embrapa Potato Breeding Program (F11-09-03, F05-11-03, F54-11-06, F141-11-01, C2718-12-09, C2718-24-09, C2743-09-09, and CL308) and three commercial cultivars (Agata, Asterix and BRSIPR Bel) were evaluated. Experiments were carried out in autumn 2017, in Canoinhas-SC and Pelotas-RS. A randomized complete block design with four replicates was used. We used tuber seeds type IV (minibubers). We evaluated plant vigor, maturity, yield and number of marketable tubers, yield and number of total tubers, average tuber... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Breeding; Selection. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000100095 |
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| Pinheiro,Jadir B; Silva,Giovani Olegario da; Macêdo,Amanda G; Biscaia,Danielle; Ragassi,Carlos Francisco; Ribeiro,Cláudia SC; Carvalho,Sabrina Isabel C de; Reifschneider,Francisco José B. |
| ABSTRACT Thirty seven pepper genotypes, Capsicum chinense, C. annuum and C. frutescens, were characterized for resistance to three root-knot nematode species (Meloidogyne javanica, M. incognita race 1 and M. enterolobii) aiming to find potential resistance sources to be used in breeding programs. Three experiments were carried out, in 2013, 2014 and 2016, in a greenhouse, in randomized block design and six replicates, one plant/pot. Data were submitted to analysis of variance and average clustering. All evaluated pepper genotypes were resistant or immune to M. javanica. For M. incognita race 1, all accessions of C. frutescens, evaluated in the first experiment, were resistant, whereas the six accessions of C. chinense were susceptible. For M. incognita,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum spp.; Meloidogyne javanica; M. incognita race 1; M. enterolobii. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100033 |
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| Silva,Giovani Olegario da; Carvalho,Agnaldo Donizete Ferreira de; Vieira,Jairo Vidal; Benin,Giovani. |
| O objetivo desse estudo foi verificar a adaptabilidade e estabilidade de populações de cenoura diante de ambientes com cultivo orgânico e convencional e realizar a comparação entre as metodologias estatísticas utilizadas. O trabalho foi desenvolvido em 2007 e 2008, em cinco locais. Em São Gotardo (MG); Irecê (BA) e Gama (DF) foi realizado cultivo convencional e em PAD (DF) (Programa de Assentamento Dirigido do Distrito Federal) e Gama (DF) foi utilizado o sistema de cultivo orgânico. O delineamento experimental utilizado foi o de blocos ao acaso com três repetições e parcelas de 1 m2. Foram avaliadas sete populações de cenoura do grupo Brasilia: 0912545, 0912532, 0912520, BRS Planalto, Esplanada, Brasília e Alvorada. Aos cem dias após a semeadura, foi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota L; Interação populações x ambientes; Análise multivariada; Modelos mistos. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000300003 |
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| Silva,Giovani Olegario da; Pereira,Arione da Silva; Souza,Velci Queiroz de; Carvalho,Fernando Irajá Félix de; Vieira,Eduardo Alano. |
| Aparência geral dos tubérculos é um caráter importante para o melhoramento genético da batata, por afetar consideravelmente na aceitação do produto in natura pelos consumidores. Dentre seus caracteres componentes, destacam-se a coloração e a lisura da película dos tubérculos. O objetivo deste trabalho foi investigar a resposta de seleção esperada para caracteres de qualidade de película (lisura e coloração) e aparência de tubérculo em três famílias de batata. Os experimentos foram realizados no campo experimental da sede da Embrapa Clima Temperado, na primavera de 2004 e 2005, utilizando três famílias em segunda e terceira gerações clonais respectivamente. Nos tubérculos, foram avaliados os caracteres lisura e coloração de película e aparência geral de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum L.; Valor genético; Herdabilidade; Coloração; Lisura de películ. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000300011 |
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| Silva,Giovani Olegario da; Pereira,Arione da Silva; Souza,Velci Queiroz de; Carvalho,Fernando Irajá Félix de; Vieira,Eduardo Alano. |
| A análise dialélica propicia estimativas de parâmetros úteis à seleção de genitores e ao entendimento dos efeitos genéticos envolvidos na determinação dos caracteres. O objetivo deste trabalho foi estimar a capacidade geral e específica de combinação multivariada de genótipos de batata em gerações iniciais de seleção. Foram avaliadas 20 famílias clonais de batata (5*4) de nove genótipos, em um esquema dialélico, por duas gerações sucessivas. Os experimentos foram conduzidos na Embrapa Clima Temperado, em Pelotas, RS (31°S, 52°W), na primavera de 2005 e no outono de 2006. Foram avaliados 14 caracteres morfológicos de tubérculo e selecionados os seis mais estáveis ou que melhor repetiram perante as gerações para outras análises. A análise de variância... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum L.; Análise dialélica; Gerações precoces. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000200004 |
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| Registros recuperados: 14 | |
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