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| Registros recuperados: 22 | |
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| Machado,Marcos A.; Cristofani-Yaly,Mariângela; Bastianel,Marinês. |
| Although the citriculture is one of the most important economic activities in Brazil, it is based on a small number of varieties. This fact has contributed for the vulnerability of the culture regarding the phytosanitary problems. A higher number of varieties/genotypes with potential for commercial growing, either for the industry or fresh market, has been one of the main objectives of citrus breeding programs. The genetic breeding of citrus has improved, in the last decades, due to the possibility of an association between biotechnological tools and classical methods of breeding. The use of molecular markers for early selection of zygotic seedlings from controlled crosses resulted in the possibility of selection of a high number of new combination and, as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citriculture; Improvement; Hybrids. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500019 |
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| Souza, Helenize Gabriela de; UNESP; Doria, Karolina Marie Alix Benedictte Van Sebroech; UNESP; Basseto, Marco Antonio; UNESP; Rosa, Daniel Dias; UNESP-FCA, Programa de Pós-graduação em Proteção de Plantas; Furtado, Edson Luiz; UNESP; Marino, Celso Luis; UNESP - IBB, Depto de Genética. |
| No melhoramento genético de espécies florestais, uma população base ou indivíduos superiores pré-selecionados tem importância fundamental para a manutenção do programa. Indivíduos de melhores procedências e de ampla base genética propiciam a obtenção de ganhos de forma contínua. O objetivo deste trabalho foi avaliar a diversidade genética em duas populações-núcleo de Eucalyptus grandis. Foram avaliados 39 indivíduos, sendo 19 pertencentes à população 1 e 20, à população 2, utilizando-se 14 primers microssatélite. Os fragmentos foram identificados e analisados a partir dos programas GeneScan e Genotyper, utilizando-se um sequenciador automático ABI Prism 3100. O número de alelos encontrados para cada primer variou de cinco a 15 para a população 1 e, de 8 a... |
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Palavras-chave: 5.01.03.05-9 populações-núcleo; Eucalyptus; Melhoramento; Microssatélites Melhoramento genético Florestal nucleus populations; Eucalyptus; Improvement; Microsatellites. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3727 |
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| Carvalho,Luiz Paulo de; Salgado,Caio Césio; Farias,Francisco José Correia; Carneiro,Vinícius Quintão. |
| O objetivo deste trabalho foi verificar a presença de interação genótipo x ambiente (G x A) e determinar a adaptabilidade e estabilidade fenotípica de linhagens de algodão de fibra marrom, utilizando o modelo de Ebehart & Russell. Foram conduzidos sete experimentos nos estados de CE, GO, MS e RN, em 2010 e 2011, em regime irrigado e de sequeiro. O delineamento utilizado foi blocos casualizados com quatro repetições. Foram avaliados 11 genótipos, segundo sete caracteres relativos à fibra. A interação G x A foi significativa para a maioria dos caracteres. As linhagens 1, 2, 3, 4, 5 e 7 demonstraram capacidade de resposta à melhoria de ambiente, sendo 1 e 5 os genótipos que apresentaram comportamento previsível para todas as características. O índice de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Melhoramento; Fibra marrom; Gossypium hirsutum L. r. latifolium Hutch; Improvement; Brown fiber; Gossypium hirsutum L. r. latifolium Hutch. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400598 |
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| Guardado Plascencia, Martín. |
| Las acciones y programas encaminados a la tecnificación y modernización de los distritos de riego del país han sido diseñados para mejorar la infraestructura de estos y hacer un uso eficiente del agua. Un parámetro que permite la evaluación de estas mejoras es la productividad que presentan los cultivos, relacionando su rendimiento y el aprovechamiento del agua. Con el propósito de determinar el impacto que han tenido las acciones encaminadas a mejorar la infraestructura en el distrito de riego 053 “Estado de Colima”, se recopiló, proceso y organizó la información de superficie cosechada para los cultivos perennes, que han recibido la mayor inversión para la tecnificación y modernización de las redes de conducción y distribución del agua. El estudio se... |
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Palavras-chave: Tecnificación; Comparación; Agua; Programas; Incremento; Improvement; Comparison; Water; Programs; Increasing; Hidrociencias; Maestría Tecnológica. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2068 |
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| Silva,Marcia Flores da; Schuster,Ivan; Cervigni,Gerardo Domingo Lucio; Silva,João Flávio Veloso da; Dias,Waldir Pereira; Ferreira,Adésio; Barros,Everaldo Gonçalves de; Moreira,Maurílio Alves. |
| The objective of this work was to evaluate the soybean inheritance of resistance to cyst nematode races 3 and 14. The following populations where evaluated: one population of recombinant inbred lines (RILs) [Hartwig (resistant) x Y23 (susceptible line)] for races 3, 14 and 9; one population of families F2:3 [M-SOY 8001 (resistant) x MB/BR 46 - Conquista (susceptible)] for race 3; and one population of families F2:3 [(S5995 (resistant) x BRSMG Renascença (susceptible)] for race 14. In RIL populations, four epistatic genes were identified which conditioned resistance to race 14, and three epistatic ones for resistance to races 3 and 9. The lack of one gene provided moderate resistance under all situations. The highest number of genes for resistance to race... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Heterodera glycines; Improvement; Recombinant inbred lines; Soybean cyst nematode. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007001200010 |
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| Mohammad Reza Mostofi; member of academic staff(PhD); M. Shaker; A. Mahdinia. |
| Wheat is one of the most important food staff in consumption pattern of each country. More than 50% of human energy is supplied from bread in developing countries. Reducing of losses and waists in combine harvesting resulte increasing considerable wheat production in country. Combine loss is less than 2%-3% in developed countries, while that of developing countries is about 15%-20% in different regions and circumstances of harvesting seasons and field conditions. Regarding to research finding that maximum total combine losses are related to combine header loss, so it is necessary to determine precise losses and their causes to improve and modify existing combine's technical characteristics. In this national research project that took place in three... |
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Palavras-chave: Combine; Performance; Wheat; Improvement; Modification. |
| Ano: 2011 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1510 |
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| Crouch,Jonathan H.; Vuylsteke,Dirk; Ortiz,Rodomiro. |
| Bananas and plantains (Musa spp.) are the most important tropical fruit crops. They form an integral component of the farming systems in the humid agroecological zones of the tropics. A broad array of applied cell and molecular techniques are increasingly being used worldwide to facilitate and enhance the handling and improvement of plantain and banana germplasm. Tissue culture is used for germplasm exchange, conservation and rapid multiplication, while in vitro seed germination (based on embryo culture or rescue) plays a critical role in generating hybrid plants. DNA marker systems have been developed in Musa to assist germplasm management, selection within the breeding pool or gene introgression from wild species, and for disease diagnosis. Likewise,... |
| Tipo: Journal article |
Palavras-chave: Banana; Improvement; Micropropagation; DNA; Markers; Plantain. |
| Ano: 1998 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34581998000100002 |
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| Aguirre-Neira,Juan Carlos; Reis,Maurício Sedrez dos; Cardozo,Maritza Adelina Rojas; Raz,Lauren; Clement,Charles Roland. |
| Abstract Camu-camu (Myrciaria dubia, Myrtaceae) has the highest reported vitamin C concentrations of any native Amazonian fruit tree species, with increasing demand in domestic and international markets. With the goal of aiding management and conservation programs, we studied the diversity of camu-camu in cultivated and uncultivated areas, based on physicochemical characterization of the fruits. We evaluated 2,250 fruits from 87 plants from six localities of the Tarapacá district (Amazonas, Colombia) and from the Amazonian fruit germplasm bank of Agrosavia (Meta, Colombia). We found high physicochemical variability within and among localities, and superior fruits in the localities where non-cultivated plants were sampled, especially Pechiboy. Using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tarapacá; Myrciaria dubia; Selection; Improvement. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000200801 |
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| Toledo, Marcia Ribeiro; UFV; Tancredi, Fábio Daniel; UFV; Sediyama, Tuneo; UFV; Ribeiro Júnior, José Ivo; UFV; Reis, Múcio Silva; UFV. |
| Objetivou-se verificar a eficiência da remoção do meristema apical em diferentes densidades de plantas de soja, quanto ao estímulo à ramificação, à produção de sementes na maior densidade e à redução da altura da planta, buscando estratégias de cultivo em casa-de-vegetação para fins de melhoramento genético pelo método SSD, com a cultivar UFV-18 (Patos de Minas), na safra 2002/2003. O ensaio foi instalado em parcelas subdivididas, sendo a densidade casualizada nas parcelas e a remoção do meristema casualizada nas subparcelas, no delineamento em blocos casualizados, com três repetições. Cada vaso constitui-se em uma repetição. Foram avaliadas as características altura de inserção da primeira vagem, altura da planta, número de nós da haste principal, número... |
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Palavras-chave: 5.01.03.04-0 Produção de Mudas soja; Melhoramento; Casa-de-vegetação; Remoção do meristema apical. Soybean; Improvement; Greenhouse; Apical meristem removal. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6656 |
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| Brito, Orlando Gonçalves; Andrade Júnior, Valter Carvalho de; Azevedo, Alcinei Mistico de; Donato, Luan Mateus Silva; Silva, Lidiane Rodrigues; Ferreira, Marcos Aurélio Miranda. |
| The aim of this study was to obtain information for the genetic improvement of kale through repeatability and phenotypic stabilization studies and to compare methodologies that represent the reliability of the estimated parameters. Thirty-three half-sib progenies were evaluated in a randomized block design with three replicates and six plants per plot. Eight harvests were evaluated in terms of the yield of fresh leaves, number of shoots, number of leaves and average mass of leaves. Then, a phenotypic repeatability and stabilization study was performed, estimating the genetic parameters σ2a, σ²g, σ²e, and the coefficient of environmental variation and repeatability using the frequentist and Bayesian methodologies. To evaluate the reliability of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Improvement; Genetics; Brassica oleracea var. Acephala; Crops.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42606 |
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| Brito, Orlando Gonçalves; Andrade Júnior, Valter Carvalho de; Azevedo, Alcinei Mistico de; Donato, Luan Mateus Silva; Silva, Lidiane Rodrigues; Ferreira, Marcos Aurélio Miranda. |
| The aim of this study was to obtain information for the genetic improvement of kale through repeatability and phenotypic stabilization studies and to compare methodologies that represent the reliability of the estimated parameters. Thirty-three half-sib progenies were evaluated in a randomized block design with three replicates and six plants per plot. Eight harvests were evaluated in terms of the yield of fresh leaves, number of shoots, number of leaves and average mass of leaves. Then, a phenotypic repeatability and stabilization study was performed, estimating the genetic parameters σ2a, σ²g, σ²e, and the coefficient of environmental variation and repeatability using the frequentist and Bayesian methodologies. To evaluate the reliability of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Improvement; Genetics; Brassica oleracea var. Acephala; Crops.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42606 |
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| Hyland, Paul W.; Clark, Richard A.. |
| Continuous improvement and continuous innovation are used in the service and manufacturing industries, but there is little evidence of their use in the beef production sector. This paper examines the evidence relating to Continuous Innovation and Continuous Improvement and describes a collaborative partnership approach to its implementation in the beef industry. The results indicate that using a facilitated network of businesses can increase the uptake of innovations and improvements in beef businesses. Results also indicate that there is a need to develop facilitators so that they are aware of the impact of innovations and improvements on business profitability and so they can assist managers and business owners to implement short term changes to the... |
| Tipo: Article |
Palavras-chave: Continuous innovation; Improvement; Collaboration; Partnerships; Research; Development; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/122182 |
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| Registros recuperados: 22 | |
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