Consulta: subjectFacets:"Improvement"
Registros recuperados: 22
Data/hora: 12/06/2024 02:38:29

Análisis de la variación infraespecífica de Vanilla insignis Ames bajo el enfoque de recursos genéticos.
Provedor de dados: 32
Autores: Hernández Silva, Néstor.
En la actualidad los efectos negativos de las interacciones bióticas y abióticas dentro del cultivo de Vanilla planifolia han devastado plantaciones de este recurso en todo el mundo. La generación de estrategias para su conservación y mejoramiento requiere del conocimiento de la variación que el género Vanilla alberga. Vanilla insignis es una especie silvestre genéticamente relacionada, con características agronómicas sobresalientes dentro del pool genético secundario de V. planifolia, particularmente en la resistencia a factores climáticos y patógenos. Por tal razón, se planteó conocer la variación infraespecífica de V. insignis por medio de la caracterización morfológica y molecular de poblaciones de V. insignis del estado de Quintana Roo, México. A...
Palavras-chave: Conservación; Mejoramiento; Labelo; Microsátelites; Morfotipo; Genotipo; Conservation; Improvement; Labellum; Microsatellites; Morphotype; Genotype; Estrategias para el Desarrollo Agrícola Regional; EDAR; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2230

Impacto de las acciones de rehabilitación y modernización en la productividad del distrito de riego 053, estado de Colima.
Provedor de dados: 32
Autores: 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...
Palavras-chave: Tecnificación; Comparación; Agua; Programas; Incremento; Improvement; Comparison; Water; Programs; Increasing; Hidrociencias; Maestría Tecnológica.
Ano: 2013
URL: http://hdl.handle.net/10521/2068

Perspectives on the application of biotechnology to assist the genetic enhancement of plantain and banana (Musa spp.)
Provedor de dados: 69
Autores: 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

Atributos biométricos e teor de extrato etéreo de acessos de pequi (Caryocar spp.) como potencial fonte de biocombustível.
Provedor de dados: 14
Autores: DUBOC, E.; FRANÇA, L. V. de; FRANZON, R. C.; VIEIRA, E. A.; JUNQUEIRA, N. T. V.
bitstream/item/104747/1/BP201364.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Teor de gordura; Pequis; Improvement; Tropical fruit; Percentage; Fat; Biofuel.; Biocombustível; Fruta Tropical; Melhoramento; Pequi.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/979083

Eléments de synthèse tirés du séminaire : propositions de stratégies pour mieux concilier aménagement et maintien d'un fonctionnement naturel des estuaires
Provedor de dados: 5
Autores: Auger, Christian.
The national work seminary on the natural and artificial evolution of French estuaries was organised on the 26th and 27th of November 1997 by the GIP Hydrosystems and the Ministry of Land Settlement and Environment. Its aim was to summarize the needs of the different actors and users of the French estuaries in terms of protection of the areas of biological interest, and to develop a guideline for the strategies to adopt in order to better manage the estuaries, taking into account the environmental needs as well as those for an economic development.
Tipo: Text
Palavras-chave: Sustainable management; Administration; Action plans; Environment; Improvement; Protection; Areas of ecological interest; Estuaries; Gestion durable; Administration; Plans d'action; Environnement; Aménagements; Protection; Zones d'intérêt écologique; Estuaires.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/acte-3293.pdf

Influência da técnica e da origem do propágulo na enxertia de campo em erva-mate (Ilex paraguariensis Saint Hilaire).
Provedor de dados: 190
Autores: Wendling, Ivar; Hoffmann, Harry; Lira, Alceu.
Este trabalho objetivou avaliar a garfagem em fenda cheia, garfagem sob casca e borbulhia e a influência da posição de coleta dos propágulos dentro da planta matriz na sobrevivência dos enxertos realizados diretamente em porta-enxertos, estabelecidos um ano a campo em erva-mate. O experimento foi conduzido no município de Áurea - RS, com propágulos oriundos de uma árvore matriz com idade estimada em mais de 80 anos. Foram separados três tipos de material para compor os tratamentos: brotações da base, da parte mediana e da parte apical da árvore matriz. De forma geral, a técnica de enxertia a campo mostrou-se promissora, embora os resultados de sobrevivência dos enxertos aos 300 dias se mostrassem baixos (de 0 a 30%). Enxertos que morreram após os 65 dias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enxertos; Propagação vegetativa; Melhoramento Grafts; Vegetative propagation; Improvement.
Ano: 2004
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1293

Inheritance of resistance to soybean cyst nematode races 3 and 14 in soybean RIL and F2 populations
Provedor de dados: 86
Autores: 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

The Research and Development Strategy
Provedor de dados: 31
Autores: 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

Physical and chemical variability of Camu-camu fruits in cultivated and uncultivated areas of the Colombian Amazon
Provedor de dados: 94
Autores: 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

Breeding, genetic and genomic of citrus for disease resistance
Provedor de dados: 94
Autores: 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

Agrobacterium-mediated transformation of Citrus sinensis and Citrus limonia epicotyl segments
Provedor de dados: 63
Autores: Almeida,Weliton Antonio Bastos de; Mourão Filho,Francisco de Assis Alves; Mendes,Beatriz Madalena Januzzi; Pavan,Alexandra; Rodriguez,Adriana Pinheiro Martinelli.
Genetic transformation allows the release of improved cultivars with desirable characteristics in a shorter period of time and therefore may be useful in citrus breeding programs. The objective of this research was to establish a protocol for genetic transformation of Valencia and Natal sweet oranges (Citrus sinensis L. Osbeck) and Rangpur lime (Citrus limonia L. Osbeck). Epicotyl segments of germinated in vitro plantlets (three weeks in darkness and two weeks in a 16-h photoperiod) were used as explants. These were co-cultivated with Agrobacterium tumefaciens strain EHA-105 and different experiments were done to evaluate the transformation efficiency: explants were co-cultivated with Agrobacterium for one, three or five days; explants were incubated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic transformation; Organogenesis; Micrografting; Improvement.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100005

ความก้าวหน้าในการปรับปรุงพันธุ์ข้าวโพดหวานและข้าวโพดฝักอ่อนของ มหาวิทยาลัยเกษตรศาสตร์ในรอบ 3 ปี (พ.ศ. 2550-2552)
Provedor de dados: 106
Autores: Chokechai Aekatasanawan; Chamaiporn Aekatasanawan; Noppong Chulchoho; Kwanhatai Tanongjid; Warunya Dantaweesin; Patipat Promnaret.
Objectives of the Sweet Corn and Baby Corn Improvement Project of Kasetsart University was to improve populations and develop inbreds and single-cross hybrids of sweet corn and the non-detasseld baby corn for high yield and good eating quality for the fresh market and processing. Three sweet corn populations KSC 3 (AC0) and TSC 1 DMR (BC0) and KSC 2 (CC0) were improved by using S2 testcrossed with inbred testers KSei 14004 and SSWI 114, respectively, except for CC3 using S3 testcross). During 3 years (2007-2009), KSC 3(HI)C3 (AC3), TSC 1 DMR (HI)C2 (BC2) and KSC 2(HI)C3 (CC3) were successfully improved including their inbred and hybrid development. Population crosses were formed by factorial cross followed North Carolina Design II. Progress from selection...
Palavras-chave: Sweet corn; Baby corn; Improvement; Population; Inbred; Hybrid; ข้าวโพดหวาน; ข้าวโพดฝักอ่อน; การปรับปรุงพันธุ์ ประชากร; สายพันธุ์แท้; ลูกผสม; ผลผลิตฝักสด; คุณภาพการรับประทาน; ลักษณะทางการเกษตร; สมรรถนะการผสมทั่วไป; มหาวิทยาลัยเกษตรศาสตร์.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4659

Corn production improvement of 1992-1993 crop year project
Provedor de dados: 106
Autores: Chawanwutti Chainuwat.
Palavras-chave: Corn; Maize; Production; Improvement; ข้าวโพด; การผลิต.
Ano: 1992
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4514

Maize improvement program of the Department of Agriculture Thailand
Provedor de dados: 106
Autores: Charas Kitbamroong; Yodsaporn Chantachum; Pichet Grudloyma; Kritchai Jaiserb; Sanit Choowa.
8 tables
Palavras-chave: Corn; Maize; Improvement; ข้าวโพด; การปรับปรุงพันธุ์.
Ano: 1987
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4237

โครงการปรับปรุงพันธุ์ข้าวโพดหวานของมหาวิทยาลัยเชียงใหม่
Provedor de dados: 106
Autores: Paiboon Wivutvongvana; Manee Wivutvongvana; Krisda Samphantharak.
2 tables
Palavras-chave: Corn; Maize; Sweet corn; Chiangmai university; Inbred; Hybrids; Improvement; Topcrossing; ข้าวโพดหวาน; การปรับปรุงพันธุ์; มหาวิทยาลัยเชียงใหม่.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4458

Study of repeatability and phenotypical stabilization in kale using frequentist, Bayesian and bootstrap resampling approaches
Provedor de dados: 1
Autores: 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

Study of repeatability and phenotypical stabilization in kale using frequentist, Bayesian and bootstrap resampling approaches
Provedor de dados: 1
Autores: 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

Diversidade genética em populações-núcleo de Eucalyptus grandis - doi: 10.4025/actasciagron.v32i4.3727
Provedor de dados: 1
Autores: 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...
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

Remoção do meristema apical e adensamento em plantas de soja visando sua utilização no método descendente de uma única semente - DOI: 10.4025/actasciagron.v31i1.6656
Provedor de dados: 1
Autores: 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...
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

Investigation and technical comparison of new and conventional wheat combines performance for improvement and modification
Provedor de dados: 111
Autores: 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...
Palavras-chave: Combine; Performance; Wheat; Improvement; Modification.
Ano: 2011
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1510

Evaluation of Top-Cross Popcorn Hybrids Using Mixed Linear Model Methodology
Provedor de dados: 117
Autores: Arnhold,Emmanuel; Mora,Freddy; G. Silva,Ricardo; I.V. Good-God,Pedro; Rodovalho,Marcos A.
The market for popcorn (Zea mays L.) has been continuously growing in Brazil fact has required the development of cultivars adapted to local environmental conditions. For this reason, the analytical objectives of this study were to evaluate top-cross popcorn hybrids in relation to popping expansion and grain yield in three different eco-geographic regions of Brazil, in order to estimate variance components using Restricted Maximum Likelihood (REML) and predict breeding values using Best Linear Unbiased Prediction (BLUP). Genetic evaluation considered a linear model with heterogeneous residual (environmental) variances. The Restricted Likelihood Ratio Test (RLRT) evidenced significant differences (p &lt; 0.01) for the genotypic effect. Grain yield showed a...
Tipo: Journal article
Palavras-chave: Popping expansion; REML; BLUP; Improvement.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000100006

Estabilidade e adaptabilidade de genótipos de algodão de fibra colorida quanto aos caracteres de fibra
Provedor de dados: 65
Autores: 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 &amp; 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