Análise de trilha usando valores fenotípicos e genotípicos para componentes do rendimento na seleção de famílias de cana-de-açúcar

Espósito, Deiciana Pagano; Peternelli, Luiz Alexandre; Paula, Thiago Otávio Mendes de; Barbosa, Márcio Henrique Pereira

doi:10.1590/s0103-84782011005000152

Cited by 21 publications

(23 citation statements)

References 13 publications

(14 reference statements)

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“…The values of genotypic correlations between all the pairs of traits were greater than the phenotypic and genetic correlations in all the experiments, agreeing with the theoretical and practical results obtained by other authors (Cheverud 1988, Ferreira et al 2007, Espósito et al 2012). For Cheverud (1988), high genotypic correlation without the same pattern of phenotypic correlation occurs due to the lack of precision in the estimates of the genetic components used in obtaining the genotypic correlation matrix.…”

Section: Resultssupporting

confidence: 92%

“…Sukhchain and Saini (1997), Silva et al (2009) and Espósito et al (2012) also obtained high direct effects of NS on SW, suggesting selection of clones for SW based in this trait. The direct effects (genetic, genotypic and phenotypic) of SD on SW were in general high, ranging from 0.11 to 0.79; however, its direct effects were only greater than the effects of NS on SW in experiment VIII and as of the genotypic correlation (Table 4).…”

Section: Resultsmentioning

confidence: 86%

“…following Espósito et al (2012). NS showed the greatest correlation with SW in 11 genetic BP Brasileiro correlation matrices (0.66 ≤ r gblup ≤ 0.89), in 13 phenotypic correlation matrices (0.66 ≤ r f ≤ 0.94) and in 10 cases in which the genotypic correlations were used (0.70 ≤ r g ≤ 0.96).…”

Section: Resultsmentioning

confidence: 92%

“…Others, however, in addition to phenotypic correlation, have also used genotypic correlation obtained as based on decomposition of variance and covariance components (Ferreira et al 2007, Espósito et al 2012, Silva et al 2012). For Silva et al (2009), genetic correlations (Pearson correlation) obtained from the genotypic mean values predicted from mixed models (REML/ BLUP), are more efficient in determination of the direct and indirect effects of the traits.…”

Section: Introductionmentioning

confidence: 99%

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Consistency of the results of path analysis among sugarcane experiments

Brasileiro¹,

Peternelli²,

Barbosa³

2013

Crop Breed. Appl. Biotechnol.

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-The aim of this research was to evaluate the consistency of path analyses in sugarcane experiments based on genetic, phenotypic and genotypic correlations. Forty-four analyses were made with a view toward quantifying the direct and indirect effects of stalk height (SH), stalk diameter (SD) and number of stalks (NS) on sugarcane weight (SW). NS had the greatest direct effect on SW in all the analyses with the use of genetic and phenotypic correlations and in 12 analyses with use of the genotypic correlations. SD had a high direct effect on SW, going beyond NS in only one experiment, while SH had the lowest direct effect on SW in most of the experiments. The results showed greater consistency with the use of genetic and phenotypic correlations. In the balanced experiments, the phenotypic and genetic correlations showed equivalent results. NS is the main determinant of changes in sugarcane production.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Consistency of the results of path analysis among sugarcane experiments

Brasileiro¹,

Peternelli²,

Barbosa³

2013

Crop Breed. Appl. Biotechnol.

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“…Por outro lado, Simmonds (1996) , 1974;MARIOTTI, 1972;ESPÓSITO et al, 2012;FERREIRA et al, 2007). A Tabela 12 resume cinco experimentos realizados por diferentes autores que estimaram correlações genotípicas entre os caracteres ALT, DIA, NCP e produção de colmos, além dos resultados do presente trabalho.…”

Section: Análise De Variânciaunclassified