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| Registros recuperados: 33 | |
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| 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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| 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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| 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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| 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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| 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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| 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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| Oliveira,Job T. de; Oliveira,Rubens A. de; Furtado Junior,Marconi R.. |
| ABSTRACT This study aimed to investigate relationships between the soil attributes that most affect garlic yield, which can be useful to choose a new area for the growing of this vegetable. We also aimed to study the effects of irrigation deficit at bulb formation stage (cloves) on final garlic quality and yield. The variables evaluated were garlic yield, irrigation, nitrogen, lateral shoot growing, plant water potential, bulb volume, leaf area index, soil electrical conductivity, soil mechanical resistance to penetration, and volumetric soil moisture content. Initially, the Pearson's correlation was estimated for the phenological indexes, and a correlation network was used to graphically express the results and to correct multicollinearity between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium sativum L.; Path analysis; Precision irrigation; Precision agriculture. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000200215 |
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| 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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| 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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| 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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| 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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| 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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| Vieira,Jairo V; Silva,Giovani Olegario da; Boiteux,Leonardo S. |
| The estimate of the genetic parameters associated with processing (fresh-cut) traits, including root length (RL), is crucial for carrot breeding programs in tropical areas. The cultivar Alvorada is an important germplasm due to its resistance to nematodes, leaf blight, heat-tolerance, and high carotenoid content. Seventy-four 'Alvorada' half-sib progenies were evaluated during the summer of 2005 in the Federal District, Brazil, in a randomized complete block design with three replications. Thirteen competitive plants in each block were randomly selected and evaluated and/or classified for RL and for number of leaves (NL), leaf length (LL), root tip type (RT), root mass (RW), crown shape (CS), root diameter (RD), and xylem diameter (XD). The Pearson's... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Heritability; Genetic correlation; Path analysis; Root length. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000100002 |
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| Pandini,Fábio; Vello,Natal Antonio; Lopes,Ângela Celis de Almeida. |
| The objective of this research was to quantify heterosis of agronomic traits and evaluate direct and indirect correlations among seed yield and other traits. A diallel involving six parents was grown in two localities. Seed yield (PG), one-hundred seed weight (PCS), number of pods per plant (NV), weight of aerial part of the plant (PPA), harvest index (IC) and number of seeds per pod (NGV) were evaluated. Positive values of heterosis were detected for all traits. Estimates of heterosis components were significative for most traits, showing effects of aditivity and dominance. The specific heterosis was more important than the variety heterosis, mainly in the locality Anhembi. MTBR-95-123800 presented the best potential per se and as parent in crosses, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Indirect selection; Correlations among traits; Path analysis; Glycine max. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600001 |
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| Sener,Okan. |
| Six experimental lines and one commercial wheat (Triticum aestivum L.) cultivar from diverse backgrounds were intercrossed in a half diallel and analyzed to determine suitable parents for hybrids combinations and promising hybrid combinations. The experiment was established in typical Mediterranean environment, using a randomized complete block design with three replications. General combining ability (GCA) and specific combining ability (SCA) effects were identified for spike length, spikelets per spike, kernel number per spike, kernel weight per spike, thousand kernel weight, and grain yield per plant. Spike length was determined by additive gene effect, though number of spikelets in spike was determined by non-additive genes. Number of kernels per... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum L.; Combining ability; Path analysis; Half-diallel analysis. |
| Ano: 2009 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000700005 |
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| Registros recuperados: 33 | |
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