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Registros recuperados: 41
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Adequacao de modelos no estudo do coefiente de trilha dos componentes primarios e secundarios de progenies F6 de soja (Glycine max (L.) Merrill). Repositório Alice
SANTOS, C. A. F.; REIS, M. S.; CRUZ, C. D.; SEDIYAMA, C. S.; SEDIYAMA, T..
Progenies F6 de soja, oriundas de selecoes entre familias F5 do cruzamento 'FT-Cometa' x 'IAC-8', foram avaliadas em Vicosa,MG. Os coeficientes de correlacoes entre nove caracteres quantitativos foram desdobrados em efeitos diretos e indiretos, considerando-se um diagrama em cadeia e os modelos aditivos e multiplicativos da producao de graos, alem de seus componentes primarios. As analises de trilha, com dados logaritmizados (aditivo) e nao-logaritmizado (multiplicativo), apresentaram os mesmos caracteres em ordem de importancia. Entretanto, o modelo aditivo foi mais eficiente ao traduzir a determinacao total dos componentes primarios sobre a producao de graos, devendo ser indicado para essas situacoes. O numero de vagens por planta, como componente...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Correlacao genetica; Analise de trilha; Path analysis; Melhoramento genético; Soybean; Soja; Glycine Max; Genetic correlation.
Ano: 1995 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133152
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Análise de trilha para os componentes de produção em videira. Repositório Alice
LEAO, P. C. de S.; COSTA, J. G. da.
bitstream/item/196820/1/Sociedade-Brasileira-de-Genetica-Reguional-do-Maranhao.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Análise de trilha; Path analysis; Genética; Melhoramento; Uva; Genetics; Grapes; Plant breeding.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/150561
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Análise de trilha sugere acumulação de fitoeno como o produto que limita a produção de pró-vitamina A em raízes de cenoura branca. Repositório Alice
SANTOS, C. A. F.; SIMON, P. W..
bitstream/item/166637/1/Carlos.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cenoura branca; Raíz; Análise de trilha; Carotenoide; Sólido solúvel; Daucus carota; Carrots; Root; Path analysis; Carotenes; Soluble solids; Cenoura; Carrots.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/134528
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Analise tecnico-economica da pecuaria bovina do Pantanal; sub-regioes da Nhecolandia e dos Paiaguas. Infoteca-e
CADAVID GARCIA, E.A..
No Pantanal Sul-Mato-Grossense de 87.640 km2, foi desenvolvido um dos maiores critorios de bovino do Pais (1,9 a 2,2 milhoes de cabecas). A analise baseou-se em informacoes amostrais estratificadas (1982/83), estudos de casos e dados do censo agropecuario de 1980. O objetivo da analise foi determinar a disponibilidade e uso dos fatores avaliando o nivel de eficiencia e os entraves da pecuaria. Os dados sao apresentados em tabelas (medias e desvios-padrao); as inter-relacoes entre os fatores foram analisadas pela funcao de Cobb & Douglas com retornos variaveis a escala e pelo "path analysis". Os principais resultados sao: a) Remembramento das propriedades pequenas e desmembramento das grandes propriedades, com aparente equilibrio em torno de 7.200 ha; o...
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Pecuaria; Pantanal; Aspecto tecnico economico; Custo; Producao; Bovino; Eficiencia economica; Path analysis; Nhecolandia; Paiaguas; Cattle breeding; Economics; Cattle production costs; Economical efficiency; Bovine.
Ano: 1985 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/787713
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Association between the morphological and productive characteristics in the selection of elephant grass clones R. Bras. Zootec.
Cunha,Márcio Vieira da; Lira,Mario de Andrade; Santos,Mércia Virginia Ferreira dos; Freitas,Erinaldo Viana de; Dubeux Junior,José Carlos Batista; Mello,Alexandre Carneiro Leão de; Martins,Kalina Gerciane Rodovalho.
The objectives in this work were to study the association between the morphological and productive characteristics in Pennisetum sp. clones, and to identify the morphological characteristics responsible for the productivity in Pennisetum cp. clones. The canonical correlations were evaluated and the path analysis was made from the simple genotypic correlation matrix between the morphological and productive characteristics of eight Pennisetum sp. clones (Taiwan A-146 2.37, Taiwan A-146 2.27, Taiwan-146 2.114, Merker México MX 6.31, Mott, HV-241, Elefante B and IRI-381). The canonical correlations were significant at 1% probability by the Chi-square test. The first pair of canonic factors, with correlation of 0.9999, related the plants with the highest dry...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canonic correlation; Dry matter content; Dry matter production; Millet; Path analysis; Pennisetum sp.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300004
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Association of morphometric measurements with morphologic scores of Criollo horses at Freio de Ouro: a path analysis R. Bras. Zootec.
Pimentel,Anelise Maria Hammes; Souza,João Ricardo Malheiros de; Boligon,Arione Augusti; Moreira,Heden Luiz Marques; Rechsteiner,Sandra Mara da Encarnação Fiala; Pimentel,Cláudio Alves; Martins,Charles Ferreira.
ABSTRACT This study used path analysis to establish the direct, indirect, and total effects of body linear and angular measurements on subjective morphological scores of the 247 Criollo horses that participated in their most important performance event, Freio de Ouro, in 2012. Freio de Ouro is the only event of the Criollo breed that considers morphology. Measurements of wither height, thoracic girth, cannon bone girth, body length, metatarsus length, croup length, shoulder width, head length, neck length, and upper neck girth, and the angles of rump, shoulder, and hock were taken. These morphometric measurements collectively explained 83% of the variation in morphological score. The measurements with the greatest total effects on score were neck length...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal production; Criollo; Equine; Morphometry; Path analysis.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100532
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ASSOCIATIONS BETWEEN TRAITS IN FISÁLIS: A TOOL FOR INDIRECT SELECTION OF SUPERIOR PLANTS Rev. Bras. Frutic.
TREVISANI,NICOLE; MELO,RITA CAROLINA DE; COLLI,MAURO PORTO; COIMBRA,JEFFERSON LUÍS MEIRELLES; GUIDOLIN,ALTAMIR FREDERICO.
ABSTRACT Knowledge about associations between traits is fundamental for plant breeding, since indirect selection can accelerate the development of promising genotypes. This study assessed the magnitude of associations between agronomically important traits in fisális (Physalis peruviana L). The experiment was conducted in Lages, Santa Catarina, and the treatments consisted of six fisális populations. The experiment was arranged in a randomized block design, with two replications and seven plants per plot. The correlations between traits were estimated based on the Pearson correlation coefficients and partitioned into direct and indirect effects through path analysis. Fruit weight was positively correlated with number of seeds (0.874), equatorial fruit...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenotypic correlation; Path analysis; Plant breeding; Physalis peruviana L.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400801
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Associations between vegetative and production traits in guava tree full-sib progenies PAB
Santos,Paulo Ricardo dos; Preisigke,Sandra da Costa; Viana,Alexandre Pio; Cavalcante,Natan Ramos; Sousa,Carlos Misael Bezerra de; Amaral Júnior,Antônio Teixeira de.
Abstract: The objective of this work was to estimate the genetic parameters and to evaluate the associations between vegetative and yield characteristics, in full-sib progenies of guava tree (Psidium guajava). The following characteristics were evaluated: yield per plant, number of fruits, fruit mass, plant height, stem diameter, and canopy volume. The estimation of genetic parameters was obtained by the REML/Blup procedure. Based on the breeding values ​​predicted by Blup, the genetic and canonical correlations were estimated, and the genetic correlation coefficients were unfolded into direct and indirect effects on the character yield per plant using path analysis. Genetic variability was estimated for number of fruits (567.66) and yield per plant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Psidium guajava; Correlations; Path analysis; REML/Blup..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500303
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Biometric analysis in maize genotypes suitable for baby corn production in organic farming system Horticultura Brasileira
Nascimento,Maxwel R; Santos,Paulo Ricardo; Coelho,Fábio C; Jaeggi,Mário Euclides PC; Costa,Kleyton Danilo S; Souza,Maurício N.
ABSTRACT The aim of this study was to estimate and quantify the degree of association between phytotechnical variables for simultaneous selection of maize genotypes suitable to produce baby corn. Seven genotypes were arranged in field in randomized complete block design with four replicates. Genetic parameters, simple, path and canonical correlations of phytotechnical variables were estimated. The variables production of marketable spikes, length of marketable spikes, final plant stand and plant height showed over 80% heritability and variation index higher than the unity, indicating that superior genotypes can be obtained and selection gains. Significant phenotypic and genotypic correlations were observed for production of marketable spikes, positive and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Path analysis; Canonical correlation; Simultaneous selection.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300419
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Biotic and abiotic factors associated with soil suppressiveness to Rhizoctonia solani Scientia Agricola
Ghini,Raquel; Morandi,Marcelo Augusto Boechat.
Crop management may modify soil characteristics, and as a consequence, alter incidence of diseases caused by soilborne pathogens. This study evaluated the suppressiveness to R. solani in 59 soil samples from a microbasin. Soil sampling areas included undisturbed forest, pasture and fallow ground areas, annual crops, perennial crops, and ploughed soil. The soil samples were characterized according to abiotic variables (pH; electrical conductivity; organic matter content; N total; P; K; Ca; Mg; Al; H; S; Na; Fe; Mn; Cu; Zn; B; cation exchange capacity; sum of bases and base saturation) and biotic variables (total microbial activity evaluated by the CO2 evolution and fluorescein diacetate hydrolysis; culturable bacterial, fungal, actinomycetes, protozoa,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soilborne pathogen; Soil microorganisms; Biological control; Path analysis; Suppressive soil.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200007
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Caracterização morfoagronômica e coeficientes de trilha de caracteres componentes da produção em mandioca Repositório Alice
GOMES, C.N.; CARVALHO, S.P. de; JESUS, A.M.S.; CUSTÓDIO, T.N..
Os objetivos deste trabalho foram caracterizar agronomicamente cem clones de mandioca (Manihot esculenta Crantz) e calcular os coeficientes de trilha entre a produção de raízes tuberosas e cinco componentes da produção, de modo a auxiliar na seleção de clones superiores. O experimento foi conduzido em área experimental da Universidade Federal de Lavras, em 2005 e 2006. Cem clones de mandioca foram avaliados em delineamento látice quadrado 10x10. A unidade experimental foi constituída por quatro plantas espaçadas de 1,0x0,6 m. As análises estatísticas foram realizadas considerando-se as oito características individualmente, utilizando-se o teste de Scott-Knott para agrupamento das médias. Os clones 87 e 88 mostraram-se promissores tanto para serem...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Manihot esculenta; Análise de trilha; Seleção indireta; Produção de raízes tuberosas; Path analysis; Indirect selection; Storage root production.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/122786
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Coeficiente de trilha no estudo dos componentes de producao do guandu (Cajanus cajan (L.) Millap). Repositório Alice
SANTOS, C. A. F.; MENEZES, E. A.; PAINI, J. N.; CRUZ, C. D..
bitstream/item/181123/1/Rev.-Brasileira-de-Genetica-v.16-n.3-p.367-1993.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Analise de trilha; Correlacao genetica; Pigeonpea; Production; Path analysis; Melhoramento genético; Guandu; Cajanus Cajan; Produção; Genetic correlation.
Ano: 1993 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133145
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Contribution of agronomic traits for sugar yield in sweet sorghum genotypes Repositório Alice
CECCON, G.; TEODORO, P. E.; SANTOS, A. dos..
bitstream/item/167941/1/Revista-milho....pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Path analysis; Sorghum bicolo; Sorgo sacarino.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081209
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Dairy production of "Saanen" goats based on meteorological variables and future climate scenarios. Repositório Alice
PEQUENO, I. D.; TURCO, S. H. N.; SILVA, T. G. F. da; FACO, O..
Abstract: This study aimed to modeling and bioclimatic zoning of "Saanen" goat milk production in northeastern Brazil. Data were obtained from a 14-year dairy control program for 246 ?Saanen? goat matrices. Dairy production meteorological influence and mathematical modeling were assessed through statistical analyses such as Pearson?s correlation matrix and path analysis. Bioclimatic zoning for current and future scenarios, with climate changes, were delineated using inverse-square distance (ISD) and spherical model (kriging) interpolations. Results showed maximum air temperature to contribute substantially to goat dairy production; therefore, its modeling was based thereon. Current and future dairy production maps highlighted Maranhão and Piauí as regions...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Zoneamento bioclimático; Modelagem; Bioclimatic zoning; Índice de temperatura; Brasil; Região Nordeste; Caprino; Leite de cabra; Produção leiteira; Caatinga; Método estatístico; Análise de variância; Path analysis; Welfare; Stress; Climate change; Bioclimatology; Statistical methods; Brazil; Goat milk; Milk production.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1073269
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DAIRY PRODUCTION OF ‘SAANEN’ GOATS BASED ON METEOROLOGICAL VARIABLES AND FUTURE CLIMATE SCENARIOS REA
Pequeno,Izaac D.; Turco,Silvia H. N.; Silva,Thieres G. F. da; Facó,Olivardo.
ABSTRACT This study aimed to modeling and bioclimatic zoning of ‘Saanen’ goat milk production in northeastern Brazil. Data were obtained from a 14-year dairy control program for 246 ‘Saanen’ goat matrices. Dairy production meteorological influence and mathematical modeling were assessed through statistical analyses such as Pearson’s correlation matrix and path analysis. Bioclimatic zoning for current and future scenarios, with climate changes, were delineated using inverse-square distance (ISD) and spherical model (kriging) interpolations. Results showed maximum air temperature to contribute substantially to goat dairy production; therefore, its modeling was based thereon. Current and future dairy production maps highlighted Maranhão and Piauí as regions...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Path analysis; Welfare; Stress; Climate change.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200226
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Development and selection of super-sweet corn genotypes (sh2) through multivariate approaches Bragantia
Gonçalves,Gabriel Moreno Bernardo; Pereira,Messias Gonzaga; Ferreira Júnior,José Arantes; Schwantes,Ismael Albino; Durães,Nayara Norrene Lacerda; Crevelari,Jocarla Ambrosim; Amaral Junior,Antonio Teixeira do.
ABSTRACT The aim of the present study was to investigate relations among ten traits in super-sweet corn genotypes assessed by means of simple correlation, path and canonical variable analyses, as well as to investigate the relative importance of such traits to the super-sweet corn breeding program developed at Darcy Ribeiro Northern Fluminense State University in order to develop strategies able to improve the efficiency in the selection of superior genotypes. Thus, trials comprising 3 × 6 partial diallel of super-sweet (sh2) corn were carried out, according to a short_textrandomized block design (RBD)short_text with four repetitions, in two different environments located in Northern Rio de Janeiro State, Brazil (Itaocara and Campos dos Goytacazes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L.; Canonical variables; Path analysis; Mahalanobis-D2; Partial diallel..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000400536
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Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807 Animal Sciences
Melo, Carlos Cicinato Vieira; Universidade Federal de Lavras; Reis Neto, Rafael Vilhena; Universidade Federal de Lavras; Costa, Adriano Carvalho; Universidade Federal de Lavras; Freitas, Rilke Tadeu Fonseca de; Universidade Federal de Lavras; Freato, Thiago Archangelo; Empresa de Pesquisa Agropecuária de Minas Gerais; Souza, Ulisses Nascimento de; Universidade Federal de Lavras.
The study was carried out with the objective of verifying which measures and morphometric ratios are more directly related to the body yield of Nile tilapia, Oreochromis niloticus, in two weight classes. Data were analyzed from 257 specimens of tilapia divided into two weight classes: p1 = 400 to 599 g and p2 = 600 to 900 g. The morphometric measurements standard length (SL), head length (HL), body height (BH) and body width (BW), and the ratios of these measures (HL / SL, BH / SL, BW / SL, HL / BH, BW / BH, BW / HL) were evaluated. The following body yields were calculated: carcass (RCAR), fillet (RFILE) and head (RCAB). The data were initially submitted to the "stepwise" procedure to eliminate problems of multicollinearity among the morphometric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Path analysis; Evaluation of carcass; Animal breeding; Morphometry; Oreochromis niloticus.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807
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Early indirect selection for nitrogen use efficiency in maize1 Rev. Ciênc. Agron.
Caixeta,Débora Santos; Fritsche-Neto,Roberto; Granato,Ítalo Stefanine Correia; Oliveira,Lucimar Rodrigues de; Galvão,João Carlos Cardoso.
Several studies to evaluate nitrogen use efficiency (NUE) have been carried out using early growth stages. However, there are no scientific reports on the ideal stage for evaluation and on which characteristics have the highest correlation with the NUE at that stage. The aim therefore was to identify the phenological stages and secondary characteristics which maximize accuracy in early indirect selection for NUE in maize. To do this, three endogamic maize strains were evaluated in a completely randomised design with five replications, in a triple factorial scheme (strains x N levels x phenological stage), at two contrasting nitrogen levels: low and high nitrogen. The plants were evaluated at five growth stages: stage nine (V9), with 14 fully-developed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Path analysis; Abiotic stress; Plant breeding.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000200369
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Effects of light availability and growth rate on leaf lifespan of four temperate rainforest Proteaceae RChHN
LUSK,CHRISTOPHER H; CORCUERA,LUIS J.
Although comparative studies have revealed much about the environmental correlates of leaf lifespan and its integration with other leaf traits, a comprehensive theory of leaf lifespan is still lacking. The influence of growth rate on self-shading may be a key proximate determinant of both inter- and intra-specific variation in leaf lifespans. If this were the case, we would expect leaf lifespans of fast-growing light-demanding species to respond more strongly to light environment than those of shade-tolerant species. We monitored growth and leaf survival of juvenile trees of four temperate rainforest Proteaceae in southern Chile, in order to explore the influences of light environment and self-shading on leaf lifespan. Leaf lifespans tended to decrease...
Tipo: Journal article Palavras-chave: Height growth; LAI-2000; Path analysis; Self-shading; Shade tolerance.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000200011
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Genetic analysis of wheat grains using digital imaging and their relationship to enhance grain weight Scientia Agricola
Ali,Ahmad; Ullah,Zahid; Alam,Naveed; Naqvi,S.M. Saqlan; Jamil,Muhammad; Bux,Hadi; Sher,Hassan.
ABSTRACT: Phenomic characterization through digital imaging (DI) can capture the three dimensional variation in wheat grain size and shape using different image orientations. Digital imaging may help identifying genomic regions controlling grain morphology using association mapping with simple sequence repeats (SSRs) markers. Accordingly, seed shape phenotypic data of a core collection of 55 wheat genotypes, previously characterized for osmotic and drought tolerance, were produced using computer based Smart grain software. Measured dimensions included seed volume, area, perimeters, length, width, length to width ratio, circularity, horizontal deviation from ellipse (HDEV), vertical deviation from ellipse (VDEV), factor form density (FFD) etc. The thousand...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Synthetic derived bread wheats; Seed digital imaging; Path analysis; Marker-trait association.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000601101
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