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Methods of adaptability and stability analysis in irrigated rice genotypes in Minas Gerais, Brazil
Felipe Lopes da Silva,Plínio César Soares,Adeliano Cargnin,Moacil Alves de Souza
Crop Breeding and Applied Biotechnology , 2008,
Abstract: The objective of this study was to compare different estimation methods of adaptability and stability in ninegenotypes of irrigated rice. The experiment was conducted at three sites in the state of Minas Gerais in the growing seasonsfrom 2000/2001 to 2005/2006, totaling 11 environments. The adaptability and stability were analyzed by the methods proposedby Eberhart and Russel (1966), Cruz et al. (1989), Carneiro (1998) and Annicchiarico (1992). The methods proposed byCarneiro (1998) and by Annicchiarico (1992) were more satisfactory due to the measure of behavioral adaptability andstability, which combined adaptation, adaptability and stability concepts in just one parameter. General adaptability wasobserved in the lines CNAi 8872 and CNAi 8874 and specific adaptability to favorable conditions in cultivar Rio Grande.
Sele o de genótipos de alfafa pela adaptabilidade e estabilidade da produ o de matéria seca = Alfalfa genotype selection for adaptability and stability of dry matter production
Edmar Soares de Vasconcelos,Waldomiro Barioni Júnior,Cosme Dami?o Cruz,Reinaldo de Paula Ferreira
Acta Scientiarum : Agronomy , 2008,
Abstract: O trabalho teve por objetivo avaliar e selecionar genótipos de alfafa, utilizando as metodologias de adaptabilidade e estabilidade fenotípica, empregadas em dados de produ o de matéria seca, obtidos em cortes realizados no período das águas e das secas. Oexperimento consistiu-se da avalia o de 92 genótipos de alfafa, conduzidos em três ambientes, em blocos ao acaso, com duas repeti es. Utilizou-se a metodologia tradicional, de Eberhart e Russell e do Centróide. O método tradicional indicou o genótipo WL 612como de menor varia o, porém, como sua produ o de matéria seca foi baixa, n o é interessante sua utiliza o. A metodologia de Eberhart e Russel indicou que LE N 4 teve melhor adaptabilidade na produ o de matéria seca. O método do Centróide indicou vários genótipos como de adaptabilidade geral, destacando-se LE N 4 e o P 30 como maispróximos do centróide 1. Os genótipos de melhor comportamento, no ambiente das águas, foram Rocio e Costera SP INTA e, no período das secas, Bacana. Dos 92 genótipos analisados, 25 foram classificados como passíveis de descarte. O genótipo LE N 4 foi o de melhor adaptabilidade geral, e o genótipo Bacana pode ser uma op o para utiliza o no período das secas. This work was developed with the objective of evaluating and selecting alfalfa genotypes using methods of adaptability and phenotypic stability, for the production of dry matter in harvests during the rainy and drought seasons. The experiment made use of 92alfalfa genotypes, conducted in three environments, in randomized blocks with two replications. For analyses of the adaptability and stability of the materials, the three methods applied were the traditional methodology, the Eberhart and Russel method, as well as the centroid method. The results using the traditional method of analysis indicate that the genotype WL 612 presents the lowest variation; however, as it features low averages of drymatter production, it is not recommended for such use. Applying the Eberhart and Russel methodology, LE N 4 had the best adaptability of dry matter production. Using the centroid method, several genotypes displayed overall adaptability; however, LE N 4 and P30 were closest to centroid 1. The genotypes with the best behaviors in wet environments were Rocio and Costera SP INTA and, in the drought period, Bacana performed the best. Genotype LE N 4 showed the best overall adaptability, and genotype Bacana can be anoption for utilization in the drought period.
Fenotipic adaptability and stability of four lineas and six hybrids of sweet pepper, Capsicum annuum L. Adaptabilidad y estabilidad fenotípica de líneas e híbridos de pimentón, Capsicum annuum, L.  [cached]
Carrillo Nidia Carmen,Vallejo Cabrera Franco Alirio,Estrada Salazar Edgar Iván
Acta Agronómica , 1991,
Abstract: A research was carry out in Palmira and Darién (Valle, Colombia) to determine fenotipic adaptability and stability of sweet pepper, Capsicum annuum L. Yield and its components was evaluated, according to the methodology proposed by Eberhart and Russel (1966). Three environments were determined according to adaptability and stability parameters: good environments (Palmira 1991-B), middle environment (Palmira 1991-A) and bad environment (Darién 1991-A and B). Genotypes were classified according to yield and regression coefficient: specific genotypes for good environments (1,5,6,8 and 10 genotypes) and poor adaptation genotypes (3, 4, 9 and 11 genotypes). En Palmira y Darién (Valle, Colombia) se analizó la adaptabilidad y estabilidad fenotípica de diferentes genotipos de pimentón. Se evaluó el rendimiento y sus componentes utilizando la metodología propuesta por Eberhart y Russel (1966). De acuerdo a los parámetros de adaptabilidad y estabilidad se determinaron tres ambientes: bueno (Palmira 1991-B), medio (Palmira 1991-A) y malo (Darién 1991-A y B). De acuerdo al rendimiento y coeficiente de regresión, los genotipos se clasificaron así: genotipos para ambientes buenos (1, 5, 6, 8 y 10) Y genotipos para ambientes pobres (3, 4, 9 y 11). De acuerdo con su adaptabilidad y estabilidad el genotipo 6 fue el más destacado, pues su comportamiento a través de las localidades fue similar y su rendimiento no varió con las épocas de siembra.
Análise de adaptabilidade e estabilidade em soja (Glycine max L.) em Mato Grosso / Stability and adaptability analyses in soy (Glycine max L.) in Mato Grosso states  [cached]
Hélio Bandeira Barros,Tuneo Sediyama,Cosme Dami?o Cruz,Rita de Cássia Teixeira
Ambiência , 2010,
Abstract: Este trabalho teve o objetivo de avaliar o desempenho, a estabilidade e a adaptabilidade de 17 genótipos de soja [Glycine max (L.) Merrill], em seis ambientes no estado do Mato Grosso. O delineamento experimental foram blocos ao acaso, com três repeti es. Os ensaios foram conduzidos nos anos agrícolas de 2004/05 e 2005/06 nos municípios de Rondonópolis, Campo Verde e Vera. Para avalia o da adaptabilidade e estabilidade, utilizaram-se os métodos de Eberhart e Russell (1966), Lin e Binns (1988) modificado por Carneiro (1998), Annicchiarico (1992) e Centróide (ROCHA, et al., 2005). A produtividade média de gr os, em todos os ambientes, foi de 3080,1 kg ha-1. Pela metodologia proposta por Eberhart e Russell, as cultivares M-soy 8329, M-soy 8411, Conquista, FT - 109 e Tucunaré apresentaram coeficientes de regress o estatisticamente igual a 1 ( 1 a = 1) e desvio da regress o ( ) n o significativos, ou seja, adaptabilidade geral e alta estabilidade. Pelas metodologias de Lin e Binns, Annicchiarico e Centróide, a linhagem BCR 03 142498 e as cultivares padr es M-soy 8329 e M-soy 8411 foram classificadas para amplas condi es ambientais, ou seja, alta estabilidade. Com base nas metodologias de Lin e Binns (1988), Annicchiarico (1992) e Centróide (ROCHA, et al., 2005) foi recomendada a linhagem denominada BCR 03 142498, para amplas condi es ambientes.AbstractThis work aimed at evaluating the performance, stability and adaptability of 17 soy genotypes [Glycine max (L.) Merr.] in six environments in the state of Mato Grosso. The experiments were laid out in a complete randomized blocks scheme with three replicates. The tests were carried out in 2004/05 and 2005/06 agricultural years at the municipalities of Rondonópolis, Campo Verde and Vera. The stability and adaptability were evaluated through the methods proposed by Eberhart and Russel (1966), Lin and Binns (1988), and modified by Carneiro (1998), Annicchiarico (1992) and Centroid method (ROCHA et al., 2005). The mean grain productivity was 3080.1 kg ha-1 at all environments. In agreement with the methodology proposed by Eberhart and Russell (1966) the cultivars Msoy 8329, M-soy 8411, “Conquista”, FT-109 and “Tucunaré” presented regression coefficient statistically equal to one ( ) and non-significant deviation regression ( ), which is classified as general adaptability and high stability. By using the methodologies proposed by Lin and Binns, Annicchiarico and Centroid method the lines BCR 03 142498 and the standard cultivars M-soy 8329 and M-soy 8411 were classified to the wide environmental condition, which
Adaptability and stability for the trait grain yield for the color and black commercial groups in common bean / Adaptabilidade e estabilidade da característica produtividade de gr os dos grupos comerciais carioca e preto de feij o  [cached]
Vanesca Priscila Camargo Rocha,Vania Moda-Cirino,Deonisio Destro,Nelson da Silva Fonseca Júnior
Semina : Ciências Agrárias , 2010,
Abstract: The objective of this study was to evaluate grain yield stability and adaptability from the fixed lines and cultivars of common bean of color and black comercial groups from IAPAR’s common bean breeding program, as well as to compare the methods of Wrick, Eberhart & Russell, Cruz et al. and AMMI. Three trials using the carioca group and two using the black group were conducted during the 2006/2007 water crop season and the 2007 dry crop season, in 27 environments in the State of Paraná. Each trial included 20 genotypes. The following genotypes were selected: LP 06 22 (G13) (carioca 1), LP 06 04 (G7) (carioca 2), LP 06 52 (G5), LP 06 54 (G7) e LP 06 65 (G18) (preto 1) e LP 06 73G9 (preto 2). All genotypes showed high grain yield potential with wide adaptability and stability. The environment more stable and more productive was Ponta Grossa – dry season for the all studied groups. As for the method comparisons, the Eberhart & Russell and Cruz et al. showed significant and positive correlation in 80% of the studied groups for genotypes stability and adaptability. O objetivo deste trabalho foi avaliar a estabilidade e adaptabilidade de produtividade de gr os das linhagens fixadas e cultivares de feij o do grupo comercial carioca e do grupo comercial preto, oriundas do programa de melhoramento genético do IAPAR e comparar os métodos de Wrick, Eberhart & Russell, Cruz et al. e AMMI. Na safra das águas 2006/2007 e seca 2007 foram conduzidos três ensaios do grupo carioca e dois do grupo preto, num total de 27 ambientes no estado do Paraná. Cada ensaio foi constituído por 20 genótipos. Os genótipos indicados foram LP 06 22 (G13) (carioca 1); LP 06 04 (G7) (carioca 2); LP 06 52 (G5), LP 06 54 (G7) e LP 06 65 (G18) (preto 1); e LP 06 73G9 (preto 2). Todos esses genótipos apresentaram alto potencial de produtividade de gr os com ampla adapta o e estabilidade. O ambiente mais estável e mais produtivo foi Ponta Grossa - seca para todos os grupos comerciais de feij o. Na análise de compara o entre os métodos, o método de Eberhart & Russel e Cruz et al. apresentaram correla o positiva e significativa em 80% dos grupos avaliados para a estabilidade e adaptabilidade dos genótipos.
Mixed Model, AMMI and Eberhart-Russel Comparison via Simulation on Genotype × Environment Interaction Study in Sugarcane  [PDF]
Guilherme Moraes Ferraudo, Dilermando Perecin
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.514205
Abstract: Brazil is the world leader in sugarcane production and the largest sugar exporter. Developing new varieties is one of the main factors that contribute to yield increase. In order to select the best genotypes, during the final selection stage, varieties are tested in different environments (locations and years), and breeders need to estimate the phenotypic performance for main traits such as tons of cane yield per hectare (TCH) considering the genotype × environment interaction (GEI) effect. Geneticists and biometricians have used different methods and there is no clear consensus of the best method. In this study, we present a comparison of three methods, viz. Eberhart-Russel (ER), additive main effects and multiplicative interaction (AMMI) and mixed model (REML/BLUP), in a simulation study performed in the R computing environment to verify the effectiveness of each method in detecting GEI, and assess the particularities of each method from a statistical standpoint. In total, 63 cases representing different conditions were simulated, generating more than 34 million data points for analysis by each of the three methods. The results show that each method detects GEI differently in a different way, and each has some limitations. All three methods detected GEI effectively, but the mixed model showed higher sensitivity. When applying the GEI analysis, firstly it is important to verify the assumptions inherent in each method and these limitations should be taken into account when choosing the method to be used.
The parametric restrictions of the Gardner and Eberhart diallel analysis model: heterosis analysis
Viana, José Marcelo Soriano;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000400028
Abstract: it was studied the parametric restrictions of the diallel analysis model of griffing, method 2 (parents and f1 generations) and model 1 (fixed), in order to address the questions: i) does the statistical model need to be restricted? ii) do the restrictions satisfy the genetic parameter values? and iii) do they make the analysis and interpretation easier? objectively, these questions can be answered as: i) yes, ii) not all of them, and iii) the analysis is easier, but the interpretation is the same as in the model with restrictions that satisfy the parameter values. the main conclusions were that: the statistical models for combining ability analysis are necessarily restricted; in the griffing model (method 2, model 1), the restrictions relative to the specific combining ability (sca) effects, and for all j, do not satisfy the parametric values, and the same inferences should be established from the analyses using the model with restrictions that satisfy the parametric values of sca effects and that suggested by griffing. a consequence of the restrictions of the griffing model is to allow the definition of formulas for estimating the effects, their variances and the variances of contrasts of effects, as well as for calculating orthogonal sums of squares.
The parametric restrictions of the Gardner and Eberhart diallel analysis model: heterosis analysis  [cached]
Viana José Marcelo Soriano
Genetics and Molecular Biology , 2000,
Abstract: It was studied the parametric restrictions of the diallel analysis model of Griffing, method 2 (parents and F1 generations) and model 1 (fixed), in order to address the questions: i) does the statistical model need to be restricted? ii) do the restrictions satisfy the genetic parameter values? and iii) do they make the analysis and interpretation easier? Objectively, these questions can be answered as: i) yes, ii) not all of them, and iii) the analysis is easier, but the interpretation is the same as in the model with restrictions that satisfy the parameter values. The main conclusions were that: the statistical models for combining ability analysis are necessarily restricted; in the Griffing model (method 2, model 1), the restrictions relative to the specific combining ability (SCA) effects, and for all j, do not satisfy the parametric values, and the same inferences should be established from the analyses using the model with restrictions that satisfy the parametric values of SCA effects and that suggested by Griffing. A consequence of the restrictions of the Griffing model is to allow the definition of formulas for estimating the effects, their variances and the variances of contrasts of effects, as well as for calculating orthogonal sums of squares.
Adaptability and stability of carotenoids in maize cultivars
Sara de Almeida Rios,Maria Cristina Dias Paes,Aluízio Borém,Cosme Dami?o Cruz
Crop Breeding and Applied Biotechnology , 2009,
Abstract: The purpose of this study was to investigate the adaptability and stability of carotenoids in maize cultivars inthe 2004/2005 growing season. Total carotenoids (TC), total carotenoids with provitamin A activity (Pro VA) (μg g-1) andgrain yield (kg ha-1) were quantified in 10 cultivars at five locations. The chemical analyses were conducted in a laboratoryof the EMBRAPA/CNPMS, in Sete Lagoas, Minas Gerais. The methodologies of Eberhart and Russell (1966), Lin and Binns(1988) and Rocha et al. (2005) were used to analyze adaptability and stability. In general, the linear regression modelproposed by Eberhart and Russell (1966) failed to fit the Pro VA contents in the evaluated cultivars satisfactorily. However,with regard to the TC levels, all different analysis methodologies of adaptability and stability rated hybrid BRS 2020 as anideal genotype with general adaptability.
Adaptabilidade e estabilidade de genótipos de amendoim de porte rasteiro
Oliveira, Eder Jorge de;Godoy, Ignácio José de;Moraes, Andrea Rocha Almeida de;Martins, Ant?nio Lúcio Mello;Pereira, José Carlos Vila Nova Alves;Bortoletto, Nelson;Kasai, Francisco Seiiti;
Pesquisa Agropecuária Brasileira , 2006, DOI: 10.1590/S0100-204X2006000800007
Abstract: the performance of peanut (arachis hypogaea l.) genotypes was assessed using three different adaptability and stability methods. eighteen lines and two cultivars, runner iac 886 and iac caiapó, were evaluated for pod yield (py) and one hundred kernel weight (hkw), in ten field trials in the state of s?o paulo, using ecovalance, eberhart & russel and lin & binns methods. significant differences for genotype (g), environment (e) and interaction (gxe) effects were observed for both variables. the lines l123, l137 and l150 were most productive and showed stable and predictable behavior. lin & binns methods was more sensitive for py and hkw, while the eberhart & russel method was more useful for indicating lines with broad and specific adaptability to environmental conditions. moreover, the lin & binns and eberhart & russel methods were more informative than ecovalance in predicting the behavior of genotypes for those two characteristics. negative correlation between py and pi parameter, and positive correlation between dij and wi were found. negative correlation was observed between one hkw and pi, and between pi and wi.
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