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| Registros recuperados: 33 | |
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| Cargnelutti Filho, Alberto; Silveira, Daniela Lixinski; Bubans, Valéria Escaio; Osmari, Bruno Fillipin; Somavilla, Felipe Manfio; Ortiz, Vithória Morena; Osmari, Lucas Fillipin. |
| Objectives of this work were to determine the sample size (number of plants) to estimate the mean of slender leaf rattlebox (Crotalaria ochroleuca) traits and investigate the relations among traits. In an experimental area of 8 m × 20 m (160 m2), at 147 days after sowing, 110 plants were randomly selected. The following traits were evaluated for each plant: plant height, stem diameter, number of nodes, number of leaves, leaf fresh matter, stem fresh matter, shoot fresh matter, leaf dry matter, stem dry matter and shoot dry matter. Measures of central tendency, variability, skewness and kurtosis were calculated. Normality was verified using the Kolmogorov-Smirnov test and the sample size was calculated to estimate the mean of the traits, assuming estimation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria ochroleuca; Sample sizing; Experimental precision; Correlation; Path analysis; Crotalaria ochroleuca; Dimensionamento amostral; Precisão experimental; Correlação; Aanálise de trilha. |
| Ano: 2022 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6834 |
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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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| 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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| 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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| Siddiqui,Ameena; Shukla,Sudhir; Rastogi,Anu; Bhargava,Atul; Niranjan,Abhishek; Lehri,Alok. |
| Abstract: The objective of this work was to evaluate the relationship among phenotypic and quality traits in a set of indigenous and exotic accessions of linseed (Linum usitatissimum). The experimental material consisted of 151 accessions of linseed belonging to landraces and cultivars collected from diverse agroecological zones. Five randomly chosen plants of each accession in each replicate were tagged, and data were recorded for the 12 following agronomic traits: days to flowering, days to maturity, plant weight, plant height, tillers per plant, secondary branches per plant, capsules per plant, seeds per capsule, 1,000 seed weight, harvest index, seed yield per plant, and oil content. Capsules per plant, harvest index, and plant weight played a direct... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linum usitatissimum; Correlation; Fatty acids; Genetic advance; Heritability; Path analysis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016001201964 |
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| Morais,Pedro Patric Pinho; Sousa,Massaine Bandeira e; Galli,Giovanni; Andrade,Luciano Rogério Braatz e; Fritsche-Neto,Roberto; Oliveira,Aluízio Borém de. |
| Abstract: The objective of this work was to examine the possibility of using yield components and reproductive, physiological, and root traits in early selection for nitrogen use efficiency (NUE) in corn. Sixty-four inbred lines were evaluated under two nitrogen fertilization levels: ideal and low. The evaluations were performed at three phenological stages: eight fully-expanded leaves, tasseling stage, and physiological maturity. It is possible to select superior lines for NUE, but the yield components did not show differential behavior under the different nitrogen levels evaluated. Root, reproductive, and physiological traits are not promising for early selection of corn lines with high NUE. Likewise, the eight-leaves and tasseling stages were not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Abiotic stress; GBlup; Indirect selection; Path analysis; Selection index. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500620 |
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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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| Costa,André da; Albuquerque,Jackson Adriano; Almeida,Jaime Antônio de; Costa,Adriano da; Luciano,Rodrigo Vieira. |
| Studies on water retention and availability are scarce for subtropical or humid temperate climate regions of the southern hemisphere. The aims of this study were to evaluate the relations of the soil physical, chemical, and mineralogical properties with water retention and availability for the generation and validation of continuous point pedotransfer functions (PTFs) for soils of the State of Santa Catarina (SC) in the South of Brazil. Horizons of 44 profiles were sampled in areas under different cover crops and regions of SC, to determine: field capacity (FC, 10 kPa), permanent wilting point (PWP, 1,500 kPa), available water content (AW, by difference), saturated hydraulic conductivity, bulk density, aggregate stability, particle size distribution (seven... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Field capacity; Permanent wilting point; Plant available water; Correlation analysis; Path analysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400007 |
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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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| 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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| 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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| 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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| 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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| Boligon,Alexandra Augusti; Lúcio,Alessandro Dal'Col; Lopes,Sidinei José; Cargnelutti Filho,Alberto; Garcia,Danton Camacho. |
| There are various vigor tests for the evaluation of seeds physiological quality, however, few studies correlate this tests with plants emergency. This study aimed at identifying wheat (Triticum aestivum L.) seed analysis variables that best predict seedling emergence. Wheat seeds (CEP 30 cultivar) were divided into two batches, one initially subjected to the accelerated ageing process and forming the low-quality batch, and the other, without application of the accelerated ageing process, to compose a high-quality batch. The following seed test variables were evaluated: (i) percentage of normal seedlings in the germination tests, (ii) initial germination counting, (iii) accelerated ageing, (iv) cold test without soil, (v) germination speed index, and (vi)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stepwise multiple regression analysis; Path analysis; Factor analysis; Seed quality. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300010 |
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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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| 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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| Hernández-Bautista,Aurelio; Lobato-Ortiz,Ricardo; García-Zavala,José Jesús; López-Fortoso,Fernando; Cruz-Izquierdo,Serafín; Chávez-Servia,José Luis; Cadeza-Espinosa,Marisol. |
| ABSTRACT The flowering time is regarded as an important factor that affects yield in various crops. In order to understand how the molecular basis controlling main components of earliness in tomato (Solanum lycopersicum L.), and to deduce whether the correlation between fruit weight, days to flowering and seed weight, is caused by pleiotropic effects or genetic linkage, a QTLs analysis was carried out using an F2 interspecific population derived from the cross of S. lycopersicum and S. pimpinellifolium. The analysis revealed that most of the components related to earliness were independent due to the absence of phenotypic correlation and lack of co-localization of their QTLs. QTLs affecting the flowering time showed considerable variation over time in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; QTLs; Epistasis; Days to flowering; Path analysis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500478 |
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| Registros recuperados: 33 | |
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