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| RIVERA MÉNDEZ,YURANY DAYANNA; MORENO CHACÓN,ANDRÉS LEONARDO; ROMERO,HERNÁN MAURICIO. |
| The interspecific hybrid, Elaeis oleifera x Elaeis guineensis (OxG) is an alternative for improving the competitiveness and sustainability of the Latin American oil palm agro-industry, because of its partial resistance to some lethal diseases and also because of the high quality of its oil. A comparative characterization was conducted of the physiological and biochemical performance of seedlings of six OxG hybrids grown in hydroponics. Gas exchange, vegetative growth, protein, sugar and photosynthetic pigment content, and antioxidant system activity were determined. With the exception of gas exchange, the other variables showed significant differences between materials. The ´U1273´ and ´U1737´ materials showed greater vegetative growth with no expression... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptation; Growth; Nutrient solution; Plant breeding; Stress. |
| Ano: 2013 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300005 |
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| da Silva, Alex Antonio; de Castro Carvalho, Regis; Carvalho Andrade, Marcela; Zeist, André Ricardo; Vilela Resende, Juliano Tadeu; Maluf, Wilson Roberto. |
| The aim of this study was to verify the resistance of tomato genotypes (crossed with Solanum galapagense) to the green peach aphid, Myzus persicae, and the association of this resistance with glandular trichomes. Leaf trichomes were quantified for seven F2 genotypes of the BPX-486 population derived from crossing S. lycopersicum ‘TOM-684’ and S. galapagense accession ‘LA-1401’, for the commercial controls ‘TOM-584’ and ‘Santa Clara’, and for the accession ‘LA-1401’. After this evaluation, the genotypes were subjected to two nonpreference resistance tests of the green peach aphid in the laboratory, one with choice and the other without choice. Five genotypes (BPX-486-17, BPX-486-62, BPX-486-10, BPX-486-46, and BPX-486-08) and the accession LA-1401... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant breeding; Insect pests; Leaf trichomes; Indirect selection plant breeding; Insect pests; Leaf trichomes; Indirect selection. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42704 |
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| Kamada, Takeshi; FESURV; Picoli, Edgard Augusto de Toledo; UFV; Alfenas, Acelino Couto; UFV; Cruz, Cosme Damião; UFV; Vieira, Roberto Fontes; EMBRAPA; Otoni, Wagner Campos; UFV. |
| Pfaffia glomerata é uma espécie nativa da América do Sul e de ocorrência natural em alguns Estados do Brasil. Porém, as populações naturais de fáfia têm sido ameaçadas em decorrência do intenso extrativismo, em virtude de suas propriedades terapêuticas de interesse. No presente estudo, objetivou-se estimar a diversidade genética de quatro populações naturais oriundas da bacia do Rio Paraná. Os indivíduos foram multiplicados in vitro e caracterizados de acordo com o padrão eletroforético de marcadores RAPD, utilizando-se 268 marcas polimórficas obtidas a partir de 67 primers. As estimativas de distância genética foram obtidas pelo complemento aritmético do coeficiente de Nei e Li, e os genótipos agrupados de acordo com o método UPGMA. Três populações... |
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Palavras-chave: 5.01.00.00-9 Agronomia ‘ginseng brasileiro’; Conservação de germoplasma; Melhoramento vegetal 5.01.03.05-9 brazilian-ginseng; Germplasm conservation; Plant breeding. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/548 |
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| Ortega Cedillo, Digner Santiago; Instituto Nacional Autonomo de Isvestigações Agropecuarias; Barros, Willian Silva; UFV; Ferreira, Fábio Medeiros; UFAM; Dias, Luiz Antonio dos Santos; UFV; Rocha, Rodrigo Barros; Centro de Pesquisa Agroflorestal de Rondonia; Cruz, Cosme Damião; UFV. |
| Estimaram-se as correlações fenotípicas, genotípicas e ambientais entre o número de cachos por planta e a produção anual e suas combinações em dendê (Elaeis guineensis). Os coeficientes de repetibilidade e de determinação também foram estimados, com o objetivo de indicar o período mínimo de colheita necessário para se acessar o potencial genotípico das progênies avaliadas. A correlação genotípica entre o número de cachos e a produção foi negativa, indicando que, se forem selecionados os genótipos com maior produção, o número de cachos deverá diminuir. A correlação genotípica geralmente apresentou sinal oposto do que precedia correlação ambiental, evidenciando que as causas genéticas e ambientais influenciam o número de cachos e a produção por meio de... |
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Palavras-chave: 5.02.01.03-4 Genética e Melhoramento Florestal Elaeis guineensis; Estabilização genotípica; Melhoramento genético vegetal 5.02.01.03-4 Genética e Melhoramento Florestal Elaeis guineensis; Genotype stabilization; Plant breeding. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1728 |
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| Santos, Fabíola Carvalho; Universidade Federal de Lavras; Techio, Vânia Helena; Universidade Federal de Lavras; Freitas, Aline Silva; Universidade Federal de Lavras; Castro, Evaristo Mauro de; Universidade Federal de Lavras; Davide, Lisete Chamma; Universidade Federal de Lavras; Sobrinho, Fausto Souza; Empresa Brasileira de Pesquisa Agropecuária. |
| Studies on morphological plasticity are extremely important to plant breeding seeking to optimize genotype interactions with their environments. The present study evaluated 38 genotypes of Brachiaria ruziziensis cultivated during the rainy (October to March) and dry (April to September) seasons and examined variations in their anatomical characteristics. Fully expanded leaves were collected and fixed in FAA70 (formaldehyde: acetic acid: ethyl alcohol) for 72h and subsequently stored in 70% alcohol. Median sections of leaf blades were examined and evaluated according to traditional plant anatomical procedures. Genotypes 15, 27, 40, 53, and 90 demonstrated interactions with the environment in five of the anatomical characteristics evaluated; genotypes 1 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0; 2.03.02.03-7 morphological plasticity; Plant anatomy; Plant breeding; Forage Anatomia vegetal. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18265 |
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| MEIRA,DANIELA; MEIER,CARINE; OLIVOTO,TIAGO; NARDINO,MAICON; RIGATTI,ALEXSANDER; KLEIN,LUÍS ANTÔNIO; CARON,BRAULIO O.; MARCHIORO,VOLMIR S.; SOUZA,VELCI Q. DE. |
| Abstract: This work aimed to determine variance components and genetic parameters, as well as phenotypic, genetic and environmental correlations among black oat (Avena strigosa) families grown in different crop season. Seventy-six black oat families and three controls (BRS Madrugada, BRS Centauro, BRS 139 Neblina) were evaluated in two crop seasons (2016 and 2017), using families with intercalary controls experimental design. The results reveled high potential of black oat families to compose a breeding program, due to families and controls variance were similar, variance components expressed greater genetic variance origin for crop season. Panicle weight and panicle grain weight presented high heritability and, these are correlated with panicle length.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena strigosa; Genetic correlation; Genetic parameters; Plant breeding. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500864 |
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| GILES,JOÃO ANTONIO D.; PARTELLI,FÁBIO L.; FERREIRA,ADÉSIO; RODRIGUES,JOICE P.; OLIOSI,GLEISON; SILVA,FERNANDO H. LIMA E. |
| Abstract Knowledge of the genetic variability of a population is essential to guide its preservation and maintenance in addition to increasing the efficiency of genetic breeding programs. On this basis, this study was conducted to evaluate the genetic diversity of Coffea canephora genotypes using multivariate statistical procedures applied to a set of morpho-agronomic variables. The materials employed in this study constitute a crop located in Vila Valério - ES, Brazil, where the genotypes are arranged in a randomized-blocks experimental design with four replicates. Significant differences were detected by the F test at the 1% or 5% probability levels among the genotypes for all evaluated traits, demonstrating heterogeneity of genetic constitution in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea canephora; Dissimilarity; Multivariate analysis; Plant breeding. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502437 |
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| GILES,JOÃO ANTONIO D.; OLIOSI,GLEISON; RODRIGUES,WEVERTON P.; BRAUN,HEDER; RIBEIRO-BARROS,ANA I.; PARTELLI,FÁBIO L.. |
| Abstract The morphoagronomic characterization of 12 genotypes of M. esculenta was performed during the 2013/2014 and 2014/2015 crop years. The 12 genotypes were planted in a randomized block design, with four replicates per genotype. Number of tuberous roots per plant, weight of tuberous roots, root yield, total plant weight, harvest index, plant height, height of first branch, number of shoots, stem diameter, number of buds, leaf dry weight and petiole length were evaluated. Genotypes “Camuquem” and “Goiás” were the most productive, and “Amarela” and “Gema de Ovo” were the most divergent. Seventy percent of genetic diversity was due to petiole length (22.86%), root yield (19.20%), weight of tuberous roots (14.89%) and number of buds (13.72%). Overall, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava; Plant breeding; Dissimilarity; Multivariate analysis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703639 |
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| CAMPOS-DE QUIROZ,HUGO. |
| Recent technological advancements have substantially expanded our ability to analyze and understand plant genomes and to reduce the gap existing between genotype and phenotype. The fast evolving field of genomics allows scientists to analyze thousand of genes in parallel, to understand the genetic architecture of plant genomes and also to isolate the genes responsible for mutations. Furthermore, whole genomes can now be sequenced. This review addresses these issues and also discusses ways to extract biological meaning from DNA data. Although genomic issuesare addressed from a plant perspective, this review provides insights into the genomic analyses of other organisms |
| Tipo: Journal article |
Palavras-chave: Genomics; Plant breeding; Gene discovery. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300013 |
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| Rufino,Elcio Rodrigo; Siqueira,Walter José; Marques,Márcia Ortiz Maio; Colombo,Carlos Augusto; Azevedo Filho,Joaquim Adelino; Martins,Antônio Lúcio Melo. |
| The aromatic and medicinal species Lippia alba is vigorous and rugged native to the South America (Atlantic Rainforest). Because it is an allogamous and self-incompatible species, natural populations have high morphological and chemical variability. This work had as objective to conduct a preliminary screening to identify new promising clones from a novel (recombinant) base population of Lippia alba with regard to its agronomic and phytochemical traits, using the linalool oil or chemotype as model. The two superior linalool clones, obtained by collection, were used as controls. Traits evaluated included: dry mass of leaves (DML), oil yield percentage (EOY%), oil production per plant (OP), and linalool percentage (LN%). Forty linalool chemotype clones were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Verbenaceae; Oil linalool; Genetic divergence; Clone selection; Plant breeding. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000200002 |
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| Soares,Taliane Leila; Souza,Everton Hilo de; Costa,Maria Angélica Pereira de Carvalho; Silva,Sebastião de Oliveira e; Santos-Serejo,Janay Almeida dos. |
| ABSTRACT Obtaining banana tetraploid cultivars from triploid strains results in total or partial reestablishment of fertility, allowing the occurrence of some fruits with seeds, a feature that is undesirable from a marketing perspective. The objective of this study was to assess the viability of pollen of 12 banana tetraploid hybrids (AAAB) by means of in vitro germination and two histochemical tests (acetocarmine and 2,3,5-triphenyltetrazolium chloride). The pollen tube growth was evaluated by germinating grains in three culture media — M1: 0.03% Ca(NO3)∙4H2O, 0.02% Mg(SO4)∙7H2O, 0.01% KNO3, 0.01% H3BO3 and 15% sucrose; M2: 0.03% Ca(NO3)∙4H2O, 0.01% KNO3, 0.01% H3BO3 and 10% sucrose; and M3: 0.015% H3BO3, 0.045% Ca3(PO4)2 and 25% sucrose. The acetocarmine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa L.; In vitro pollen germination; Histochemical analysis; Plant breeding. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200145 |
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| Azevedo,Alcinei Mistico; Andrade Júnior,Valter Carvalho de; Pedrosa,Carlos Enrrik; Oliveira,Celso Mattes de; Dornas,Marcus Flavius Silva; Cruz,Cosme Damião; Valadares,Nermy Ribeiro. |
| The efficiency of artificial neural networks (ANN) to model complex problems may enable the prediction of characteristics that are hard to measure, providing better results than the traditional indirect selection. Thus, this study aimed to investigate the potential of using artificial neural networks (ANN) for indirect selection against early flowering in lettuce, identify the influence of genotype by environment interaction in this strategy and compare your results with the traditional indirect selection. The number of days to anthesis were used as the desired output and the information of six characteristics (fresh weight of shoots, mass of marketable fresh matter of shoots, commercial dry matter of shoots, average diameter of the head, head... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Multi-layer-perceptron; Gain selection; Plant breeding; Computational intelligence. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000400387 |
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| Kurosawa,Railan do Nascimento Ferreira; Vivas,Marcelo; Amaral,Antonio Teixeira do; Ribeiro,Rodrigo Moreira; Miranda,Samila Barbosa; Pena,Guilherme Ferreira; Leite,Jhean Torres; Mora,Freddy. |
| ABSTRACT Compared with the common corn, popcorn shows greater susceptibility to pests and diseases occurrence, being the use of resistant cultivars the most efficient strategy. In this regard, Germplasm Banks deserve special attention because they contain accessions that can be used as sources of resistance in breeding programs. The State University of Northern Rio de Janeiro (UENF) maintains a popcorn Germplasm Bank with accessions from tropical and temperate countries, including Diversity Centers for the species. In this study, we investigated the performance of 37 popcorn accessions landraces, hybrids, and inbreed lines ― from the Germplasm Collection of UENF’s Popcorn Breeding Program with respect to the fungal leaf diseases northern leaf blight (NLB)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Northern leaf blight; Genetic resistance; Plant breeding. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100036 |
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| Registros recuperados: 550 | |
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