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| Registros recuperados: 64 | |
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| Silva,Flavia Alves da; Correa,Caio Cezar Guedes; Carvalho,Beatriz Murizini; Viana,Alexandre Pio; Preisigke,Sandra da Costa; Amaral Júnior,Antônio Teixeira do. |
| ABSTRACT: Multicollinearity is a very common problem in studies that employ path analysis in agronomic crops, which generates unrealistic results and erroneous interpretations. This study was aimed at assessing the path analysis in data obtained from guava tree full-sib based on modelling multiple regressions applying latent variables to neutralize the effects of multicollinearity. Seven explanatory variables were measured – fruit mass (FM), fruit length (FL), fruit diameter (FD), mesocarp thickness (MT), peel thickness (PT), pulp mass (PM), total number of fruits (NTF) –, plus the main dependent variable, total yield per plant (YIELD). In accordance with the multicollinearity scenario, eleven values were tested with the addition of the constant K to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SEM methodology; Trail crest; Correlation. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200501 |
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| Silveira,Solange Ferreira da Silveira; Hawerroth,Maraisa Crestani; Oliveira,Danyela de Cássia da Silva; Woyann,Leomar Guilherme; Almeida,Helaine Claire Ferreira de; Luz,Viviane Kopp da; Thurow,Liamara; Silva,Raíssa Martins da; Gutkoski,Luiz Carlos; Maia,Luciano Carlos da; Oliveira,Antonio Costa de. |
| ABSTRACT Improvement of quality-related traits of grains is a constant concern in white oat breeding programs, which challenges breeders to understand their dynamics. The performance of different genetic combinations must be thoroughly evaluated to make high nutritional quality cultivars available. This study aimed to estimate the heterosis on F1 and F2 generations, vigor loss, due to inbreeding, and correlation between the grain chemical components to understand the dynamics of these traits, considering two segregating oat progenies. The populations Albasul × UPF 15 (population 1) and IAC 7 × UFRGS 19 (population 2) were developed. Both populations showed transgressive segregant individuals. The combination Albasul × UPF 15 provided significant heterosis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena sativa; Functional food; Artificial hybridization; Correlation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500471 |
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| Lu,Dengsheng; Batistella,Mateus. |
| Many texture measures have been developed and used for improving land-cover classification accuracy, but rarely has research examined the role of textures in improving the performance of aboveground biomass estimations. The relationship between texture and biomass is poorly understood. This paper used Landsat Thematic Mapper (TM) data to explore relationships between TM image textures and aboveground biomass in Rondônia, Brazilian Amazon. Eight grey level co-occurrence matrix (GLCM) based texture measures (i.e., mean, variance, homogeneity, contrast, dissimilarity, entropy, second moment, and correlation), associated with seven different window sizes (5x5, 7x7, 9x9, 11x11, 15x15, 19x19, and 25x25), and five TM bands (TM 2, 3, 4, 5, and 7) were analyzed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Texture; Aboveground biomass; TM image; Correlation; Amazon. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672005000200015 |
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| Falcão, Alencariano José da Silva; UFT; Martins, Elias Nunes; UEM; Costa, Cláudio Napolis; EMBRAPA; Mazucheli, Josmar; UEM. |
| Os efeitos, sobre a avaliação genética da interação reprodutor-região, foram investigados analisando-se 108.702 registros de produção de leite (PL305) de vacas da raça Holandesa, pertencentes a rebanhos de Minas Gerais, São Paulo, Paraná, Sanata Catarina e Rio Grande do Sul. Um modelo animal multicarácter foi aplicado para estimar os componentes de variância e covariância utilizando amostragem de Gibbs. As médias a posteriori da variância genética de Santa Catarina e Rio Grande do Sul foram superiores (p < 0,001) às estimadas nos demais estados e iguais (p > 0,05) entre si. As herdabilidades variaram entre 0,24 e 0,38. As correlações genéticas entre os estados foram de baixa magnitude e variaram entre 0,07 a 0,33. Os valores de correlação de Spearman... |
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Palavras-chave: 5.05.04.00-2 Reprodução Animal cadeia de Markov; Correlação; Componentes de variância; Herdabilidade. Markov chain; Correlation; Variance components; Heritability. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4706 |
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| Marques,L.C.; McManus,C.; Peripolli,V.; Araújo,C.V.; Matos,A.S.; Costa,J.S.; Silva,C.S.; Sales,R.L.; Camargo Júnior,R.N.C.; Laureano,M.M.M.; Marques,J.R.F.. |
| ABSTRACT The objective of this study was to evaluate genetic aspects related to production and reproductive efficiency of Murrah and Mediterranean buffaloes and their crosses. A ranking of bulls from Embrapa Eastern Amazonia was also composed to guide assisted mating. Birth records of 2,322 Murrah, Mediterranean, and crossbred buffaloes from the Embrapa Eastern Amazon herd, from 1953 to 2013, as well as information on production and reproductive traits were used. Genetic analyzes were performed in the WOMBAT software using the animal model with two-trait analysis. While heritability (h2) for total milk production (TMP) and fat milk percentage (F) were generally high, for reproductive traits h2 tended to be low. Genetic correlations for TMP with the other... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic management; Heritability; Correlation; Reproductive efficiency. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000501712 |
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| Barbosa,L.; Lopes,P.S.; Regazzi,A.J.; Guimarães,S.E.F.; Torres,R.A.. |
| Using principal component analysis, records of 435 animals from an F2 swine population were used to identity independent and informative variables of economically important performance. The following performance traits were recorded: litter size at birth (BL), litter size at weaning (WL), teat number (TN), birth weight (BW), weight at 21 (W21), 42 (W42), 63 (W63) and 77 (W77) days of age, average daily gain (ADG), feed intake (FI) and feed:gain ratio (FGR) from 77 to 105 days of age. Six principal components expressed variation lower than 0.7 (eigen values lower than 0.7) suggesting that six variables could be discarded with little information loss. The discarded variables present significant simple linear correlation with the retained variables. Retaining... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Multivariate analysis; Correlation; Discard; Growth; Litter size; Performance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600016 |
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| Kvitschal,Marcus Vinícius; Vidigal Filho,Pedro Soares; Scapim,Carlos Alberto; Gonçalves-Vidigal,Maria Celeste; Sagrilo,Edvaldo; Pequeno,Manoel Genildo; Rimoldi,Fabrício. |
| The objective of this work was to compare different phenotypic stability methods by using yield and storage root dry matter content data of eight cassava genotypes, assessed in eight environments in northwest of Paraná State, Brazil. All the methodologies applied showed to be able to study the stability of cassava genotypes, but each with its peculiarities. The methodologies of Eskridge, Annicchiarico and Lin and Binns were the most appropriated on situation with smaller effect of G x E interaction. The AMMI analysis and the Toler and Burrows methodology were the most specific on detailing specific adaptations of cassava genotypes to favorable and unfavorable environments. It could be suggested to use simultaneous AMMI analysis and Toler and Burrows... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta; Correlation; Stability; Safety first indexes; Non-linear regression; AMMI analysis. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100022 |
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| Lu,Jian-xia; Lu,Zhong-qian; Zhang,Shao-lan; Zhi,Juan; Chen,Zheng-ping; Wang,Wan-xiang. |
| Single nucleotide polymorphisms in the promoter region ofinterleukin-18 (IL-18), an inflammatory cytokine, have been linked to susceptibility to many diseases, including cancer and immune dysfunction. Here, we explored the potential association between theIL-18 -607C/A (rs1946518) promoter region polymorphism and susceptibility to ischemic stroke (IS). This locus was amplified from peripheral blood samples of 386 IS patients (cases) and 364 healthy individuals (controls) by the polymerase chain reaction with sequence-specific primers. Significant differences were observed by the χ2 test in the -607C/A (rs1946518) genotype and allele frequencies between cases and controls (P < 0.05). Furthermore, after excluding for age, gender, smoking status, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: IL-18; Polymorphism; Ischemic stroke; Correlation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600502 |
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| Vieira,Antonio José Dias; Oliveira,Dario Alves de; Soares,Taís Cristina Bastos; Schuster,Ivan; Piovesan,Newton Deniz; Martínez,Carlos Alberto; Barros,Everaldo Gonçalves de; Moreira,Maurílio Alves. |
| This work aimed to identify the quantitative trait loci (QTL) associated with photosynthesis and growth and productivity traits of soybean and to study possible associations between these traits by the analysis of coincidence of QTL in linkage groups (LGs). Thus, populations of recombinant inbred lines (RILs) of the F7 and F8 generations derived from the cross between the varieties BARC-8 and Garimpo were used. The traits evaluated were net assimilation rate of CO2 under saturating light (Asat), potential photosynthesis rate (Pmax), leaf area (A), specific leaf area (SLA), specific leaf nitrogen (N); root (W R), nodule (W N), stem (W ST), leaf (W L), pod (W P) and plant dry mass (W T); nodule (nN), seed (n s), and pod number (nP); seed fresh mass per plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Correlation; Genes; Photosynthesis; Quantitative trait loci. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200004 |
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| Onemli,Fadul. |
| Peanut (Arachis hypogaea L.) is one of the most important oilseed crops of the world. The fatty acid composition plays an important role in oil quality. Experiments were performed to examine the variation in oil fatty acids of three normal oleic peanut market types (Virginia, Valencia, and Spanish) in 2008, 2009, and 2010. Variations of botanical variety, year and their interaction were highly significant for oil content and all 13 fatty acids studied. Oil content in different peanut market types exhibited significant differences. The maximum oil content (51.993%) was found in Virginia (NC-7), while Valencia (New Mexico Valencia A) accumulated the minimum oil content (47.197%). Virginia had also the highest oleic acid percentage. Higher temperatures during... |
| Tipo: Journal article |
Palavras-chave: Arachis hypogaea subsp. fastigiata; Temperature; Correlation. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400004 |
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| Montaldo,Hugo H; Trejo,Carlos; Lizana,Carlos. |
| The objective of this study was to estimate genetic parameters for milk production and reproduction traits using phenotypic and pedigree information from the Dairy Overo Colorado breed from southern Chile. Single- and multi-trait mixed models were used to analyze the data. Analyses were performed using ASReml software. The heritability estimates for milk yield, fat yield, protein yield, fat content, protein content, age at first calving and calving interval were 0.29 ± 0.04, 0.34 ± 0.04, 0.30 ± 0.04, 0.56 ± 0.04, 0.56 ± 0.04, 0.01 ± 0.07 and 0.002 ± 0.02, respectively. The genetic correlations between yield traits were high and positive (≥ 0.81). The genetic correlations of milk yield with fat content (-0.32) and protein content (-0.34) were... |
| Tipo: Journal article |
Palavras-chave: Breeding; Chile; Correlation; Heritability; Local cattle breed. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100003 |
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| Abbasian,Abouzar; Mirshekari,Bahram; Safarzade Vishekaei,Mohammad N; Rashidi,Varahram; Aminpanah,Hashem. |
| Effects of the foliar application of methanol on the yield and growth of rice (Oryza sativa cv. Shiroudi). Cien. Inv. Agr. 43(1):17-24. Approximately two decades have passed since it was reported that the foliar application of methanol increased plant biomass and yield. Many subsequent reports have been published concerning the ability or inability to reproduce these initial observations. To evaluate the effect of methanol on rice (Oryza sativa cv. Shiroudi) yield and rice components, a field experiment was conducted at the Tonekabon Rice Research Station in Iran in 2012 and 2013. The experiment had a randomized complete block design (RCBD) with three replicates. The plants were treated with aqueous methanol solutions (0, 6, 12, 18, and 24% (v/v)).... |
| Tipo: Journal article |
Palavras-chave: Aqueous methanol solution; Correlation; Glycine; Grain yield; Growth; Rice; Tween 80 as a surfactant. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000100002 |
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| Okuyama,Lauro Akio; Federizzi,Luiz Carlos; Barbosa Neto,José Fernandes. |
| The aim of the present study was to investigate the relationship between plant traits and yield per spike in wheat genotypes. The measured plant traits were: length of flag leaf blade, peduncle extrusion, peduncle, spike and sheath, culm diameter and plant height. Data were analyzed with correlation and path coefficient analysis. Yield per spike correlated positively with spike length and culm diameter. Path coefficient analysis indicated that, under irrigated condition, yield per spike had a positive direct effect and a positive correlation with spike length and culm diameter and, under non-irrigated condition, yield per spike showed a positive direct effect and a positive correlation with culm diameter, spike length and plant height. Culm diameter and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Correlation; Path analysis; Water stress; Irrigation. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000500005 |
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| Registros recuperados: 64 | |
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