Correlação de pearson e análise de trilha identificando variáveis para caracterizar porta-enxerto de Pyrus communis L

Galarça, Simone Padilha; Lima, Cláudia Simone Madruga; Silveira, Gustavo da; Rufato, Andreia De Rossi

doi:10.1590/s1413-70542010000400010

Cited by 23 publications

(13 citation statements)

References 12 publications

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“…O estudo das correlações entre caracteres é muito importante, pois o melhorista tem condições de orientar a seleção de forma indireta para aqueles caracteres de interesse (Galarça et al, 2010). Os resultados (Tabela 2) demonstram a existência de correlações significativas (correlação de Pearson, para p <0,05) entre várias das características físicas e químicas da planta e do suco analisados.…”

Section: Segundo Chitarra and Campos (1981) Eunclassified

Porta-enxertos alternativos para cultivo de laranja Valência na região sudoeste do estado de São Paulo

Simonetti¹,

Cristofani–Yaly²,

Barros³

et al. 2015

Citrus Research &Amp; Technology

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RESUMOHíbridos de tangerina Sunki vs Poncirus trifoliata cv. Rubidoux são uma nova geração de porta-enxertos para a citricultura que apresentam o potencial de reunir características como, formação de plantas com menor porte de copa, elevada eficiência produtiva e produção de frutos com alta qualidade de suco. O objetivo do presente estudo foi avaliar híbridos de porta-enxertos de citros, em competição com limão 'Cravo' (Citrus limonia Osbeck), enxertados com laranja 'Valência' (Citrus sinensis (L.) Osbeck), visando novas seleções de porta-enxertos para a citricultura. Foram avaliadas 48 combinações de laranja 'Valência' com híbridos utilizados como porta-enxerto e o limão Cravo. As variáveis analisadas foram: compatibilidade entre copa e porta-enxerto, desenvolvimento vegetativo das plantas, produção, eficiência produtiva, massa dos frutos, diâmetros equatorial e polar dos frutos, rendimento do suco, teores de sólidos solúveis totais (SST -°Brix), acidez titulável (AT), "ratio" (Relação SST/AT), índice tecnológico (IT). Foi calculado um índice de desempenho para cada combinação copa/porta-enxerto. Para isso, foram previamente determinados índices para as variáveis produção de frutos, rendimento de suco, "ratio" e índice tecnológico. Os resultados obtidos permitiram concluir que ao menos 18 híbridos enxertados com laranja 'Valência' mostraram melhores índices de desempenho em relação ao limão 'Cravo'. Termos de indexação: citrandarins, Citrus, índice de desempenho.Alternative rootstocks for Valencia orange cultivation in the southwest region of the state of São Paulo SUMMARYHybrids of mandarin Sunki vs Poncirus trifoliata cv. Rubidoux are a new generation of citrus rootstocks that have potencial to bring together characteristics such as, formation of plants with lower canopy size, high productive efficiency and production of fruits with high quality of juice. The objective of the present study was to evaluate citrus rootstocks in competition with Rangpur lime

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Section: Segundo Chitarra and Campos (1981) Eunclassified

Porta-enxertos alternativos para cultivo de laranja Valência na região sudoeste do estado de São Paulo

Simonetti¹,

Cristofani–Yaly²,

Barros³

et al. 2015

Citrus Research &Amp; Technology

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“…In this way, studies on heritability and correlation can provide more conclusive criteria on the selection pressure of a species, favoring the selection of genotypes with superior performance (Benin et al, 2009;Galarça et al, 2010). It is worth noting that, in forage species, selection is preferably performed directly on the trait of greater importance such as leaf production, for its high nutritional value and for being the plant part preferentially consumed by animals (Brâncio et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Genetic gain in apomictic species of the genus Paspalum

et al. 2017

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1The objective of this work was to provide means to obtain genetic gain in apomictic species of the genus Paspalum by identifying traits that simultaneously show high correlation and heritability. Thus, to determine the amount of phenotypic variation due to genetic and environmental effects and the degree of association between leaf dry matter production and other traits of forage interest that are easy to select and measure will bring agility and economy in the selection of forage species. The experiment was conducted in the years 2009/10 and 2010/11 in the municipalities of Eldorado do Sul and Augusto Pestana, RS, Brazil, in a randomized complete block design with three replicates. The increase in the direct selection pressure on total and leaf dry matter of apomictic accesses of the genus Paspalum is enhanced by a greater contribution of genetic effects than environmental effects on the composition of the phenotypic variance. Efficient genetic gain in leaf production is achieved by indirect selection of total dry matter, which is a trait of high heritability and easy to select and measure.

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“…The study of correlated traits can favor the choice of genotypes and/or handlings more adjusted, provided that is positively show linked to grain yield [27]. However, the correlations by itself does not inform about the cause-and-effect relationship between the explanatory variables and the main, suggesting the decomposition of these relations via track analysis [28].…”

Section: Resultsmentioning

confidence: 99%

The Dynamics of Relation Oat Panicle with Grain Yield by Nitrogen

Mantai¹,

Silva²,

Arenhardt³

et al. 2016

AJPS

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The oat panicle components were changed by the forms of nitrogen use influencing productivity. The aim of the study was to determine the direct and indirect effects of oat panicle components on grain yield by N-fertilizer rates in succession systems of high and reduced release of N-residual. The study was conducted in the years 2013 and 2014 in a randomized complete block with four replications in a factorial 3 × 2, for nitrogen rates (30, 60 and 120 kg•ha −1) and oat cultivars (Barbarasul and Brisasul) the soybean/oat and corn/oat systems. The panicle weight and grain per panicle show greater sensitivity to the change of nitrogen rates. Grain yield was favored by the direct effect of harvest index panicle and indirect by grain weight per panicle. In the system soybean/oat, the grain weight of panicle shows greater efficiency in promoting positive direct effects on grain yield.

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Correlação de pearson e análise de trilha identificando variáveis para caracterizar porta-enxerto de Pyrus communis L

Cited by 23 publications

References 12 publications

Porta-enxertos alternativos para cultivo de laranja Valência na região sudoeste do estado de São Paulo

Porta-enxertos alternativos para cultivo de laranja Valência na região sudoeste do estado de São Paulo

Genetic gain in apomictic species of the genus Paspalum

The Dynamics of Relation Oat Panicle with Grain Yield by Nitrogen

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