1999
DOI: 10.1590/s0006-87051999000100018
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Estimation of genetic parameters in the square lattice analysis

Abstract: This paper shows how to obtain unbiased estimates of genetic parameters of base populations, e.g., genotypic variance among families, heritability on a family mean basis, genotypic correlation and direct and indirect expected genetic gains, when the sampled families were evaluated in square lattice experiment. The theoretical part presents the variance and covariance components of the intra-block analysis of square lattice and the estimators of the components associated to treatment effect, considering the ord… Show more

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“…where: M E is the mean squares of error; M P/Exp is the mean squares of progeny within experiments; P E is the mean products of error; P P/Exp is the mean products of progeny within experiments. X and Y refer to pairs of traits (Viana and Regazzi, 1999;Silva et al, 2000). The Student's t test was used to determinate the significance of the phenotypic, additive and environmental correlation coefficients at the 5% and 1% probability levels.…”
Section: Methodsmentioning
confidence: 99%
“…where: M E is the mean squares of error; M P/Exp is the mean squares of progeny within experiments; P E is the mean products of error; P P/Exp is the mean products of progeny within experiments. X and Y refer to pairs of traits (Viana and Regazzi, 1999;Silva et al, 2000). The Student's t test was used to determinate the significance of the phenotypic, additive and environmental correlation coefficients at the 5% and 1% probability levels.…”
Section: Methodsmentioning
confidence: 99%