Correlação canônica entre caracteres de tubérculos para seleção precoce de clones de batata

Rigão, Maria Helena; Storck, Lindolfo; Bisognin, Dílson Antônio; Lopes, Sidinei José

doi:10.1590/s0103-84782009005000190

Cited by 15 publications

(10 citation statements)

References 6 publications

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“…Silva et al (2008) verificaram que aparência, aspereza, formato, sobrancelha, apontamento, curvatura e achatamento de tubérculo mantiveram suas expressões, da geração de plântula para a primeira e a segunda gerações clonais. Rigão et al (2009), na sequência das três primeiras gerações clonais de seleção, observaram correlação para os caracteres comprimento de tubérculo, medida do maior diâmetro, medida do menor diâmetro e matéria fresca. Estes autores observaram que o comprimento de tubérculo apresentou a maior associação entre os tubérculos plantados e colhidos, indicando que a seleção nas gerações iniciais seria eficiente.…”

Section: Resultsunclassified

Relações entre caracteres de tubérculo de batata nas primeiras gerações de seleção

et al. 2014

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Relationships among potato tuber traits in early generations of selectionThe objective of this study was to evaluate the relationships among tuber traits in potato progenies in the seedling generation and in the first clonal generation. The experiments were carried out at Embrapa Clima Temperado, in Pelotas, RS. Twelve potato progenies were grown as seedling generation in a greenhouse in the crop year 2010/2011 and the first field generation was grown in the crop year 2011/2012. The two trials were arranged in a randomized complete block design with tree replications of 25 seedlings per family. After harvest, tubers of each plant were evaluated for 14 phenotypic traits. Individual and joint analyses of variance were performed for the generations As well as correlation analysis between generations and path analysis for each generation. The correlations between tuber appearance and skin roughness; tuber curvature and pointing; weight and number of tubers; and eyebrow prominence and eye depth are strongly and positively correlated in the first two generations of selection. The correlation between the first two generations for eye depth, eyebrow prominence, tuber weight, tuber number, tuber curvature and tuber pointing indicates that selection for these traits can be applied in the seedling generation. Roughness and tuber curvature are the characteristics that most influence the overall appearance, thus the selection of these characters can be used to improve the tuber overall appearance.

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Section: Resultsunclassified

Relações entre caracteres de tubérculo de batata nas primeiras gerações de seleção

et al. 2014

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“…In assessment of the canonical correlations, some analyses are not recommended if there is the presence of multicollinearity between the variables because the results obtained are considered to be not very reliable and lead to mistaken conclusions (Cruz et al, 2003;Rigão et al, 2009). Such a situation was observed among the variables for MA, MI, and TP.…”

Section: Resultsmentioning

confidence: 99%

Multivariate analysis applied to the study of the relationship between soil and plant properties in a peach orchard

Terra¹,

Valgas

Júnior

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYIn the State of Rio Grande do Sul, the municipality of Pelotas is responsible for 90 % of peach production due to its suitable climate and soil conditions. However, there is the need for new studies that aim at improved fruit quality and increased yield. The aim of this study was to evaluate the relationship that exists between soil physical properties and properties in the peach plant in the years 2010 and 2011 by the technique of multivariate canonical correlation. The experiment was conducted in a peach orchard located in the municipality of Morro Redondo, RS, Brazil, where an experimental grid of 101 plants was established. In a trench dug beside each one of the 101 plants, soil samples were collected to determine silt, clay, and sand contents, soil density, total porosity, macroporosity, microporosity, and volumetric water content in the 0.00-0.10 and 0.10-0.20 m layers, as well as the depth of the A horizon. In each plant and in each year, the following properties were assessed: trunk diameter, fruit size and number of fruits per plant, average weight of the fruit per plant, fruit pulp firmness, Brix content, and yield from the orchard. Exploratory analysis of the data was undertaken by descriptive statistics, and the relationships between the physical properties of the soil and of the plant were assessed by canonical correlation analysis. The results showed that the clay and microporosity variables were those that exhibited the highest coefficients of canonical cross-loading with the plant properties in the soil layers assessed, and No Estado do Rio Grande do Sul, o município de Pelotas é responsável por 90 % da produção de pêssego, possuindo condições de clima e solo para a sua produção; porém, existe a necessidade de novas pesquisas que visem à melhoria na qualidade do fruto e no aumento da produtividade. Este trabalho teve como objetivo avaliar as relações existentes entre os atributos físicos do solo e da planta de pessegueiro, nos anos de 2010 e 2011, por meio da técnica multivariada de correlação canônica. O experimento foi conduzido em um pomar de pessegueiro situado no município de Morro Redondo, RS, onde foi estabelecida uma malha experimental constituída de 101 plantas. Em uma trincheira aberta ao lado de cada uma das 101 plantas, foram coletadas amostras de solo para determinar os teores de silte, argila, areia, densidade do solo, porosidade total, macroporosidade, microporosidade e umidade volumétrica, nas camadas de 0,00-0,10 e 0,10-0,20 m. Em cada planta e em cada ano, foram avaliados os seguintes atributos: diâmetro do tronco, tamanho e número de frutos por planta, peso médio do fruto por planta, firmeza da polpa, teor de Brix e produtividade do pomar. A profundidade do horizonte A do solo na área experimental também foi avaliada. A análise exploratória dos dados foi realizada por meio da estatística descritiva, e as relações entre os atributos físicos do solo e da planta foram avaliadas pela análise de correlação canônica. Os resultados evidenciaram que as variáveis argila e micropo...

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“…There are studies that employ canonical correlation analysis in agricultural crops, such as pigeon pea (SANTOS et al, 1994), bean (COIMBRA et al, 2000), potato (RIGÃO et al, 2009), and castor bean (BRUM et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Likelihood ratio test between two groups of castor oil plant traits

et al. 2016

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Correlação canônica entre caracteres de tubérculos para seleção precoce de clones de batata

Abstract: IICorrelação canônica entre caracteres de tubérculos para seleção precoce de clones de batataCanonical correlation for tuber trait to assist early selection of potato clones

Cited by 15 publications

References 6 publications

Relações entre caracteres de tubérculo de batata nas primeiras gerações de seleção

Relações entre caracteres de tubérculo de batata nas primeiras gerações de seleção

Multivariate analysis applied to the study of the relationship between soil and plant properties in a peach orchard

Likelihood ratio test between two groups of castor oil plant traits

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