Sample size for full-sib family evaluation in sugarcane

Pesquisa Agropecuária Brasileira

Mauro Sergio De Oliveira Leite¹  Luiz Alexandre Peternelli¹  Márcio Henrique Pereira Barbosa¹  Paulo Roberto Cecon¹  Cosme Damião Cruz¹ 

[1] ,Universidade Federal de ViçosaViçosa MG ,Brazil

关键词: Saccharum officinarum;    cane breeding;    simulation;    statistical methods;    variance components;    Saccharum officinarum;    melhoramento da cana;    simulação;    métodos estatísticos;    componentes de variância;   

DOI  :  10.1590/S0100-204X2009001200002

来源: SciELO

【 摘 要 】

The objective of this study was to determine the minimum number of plants per plot that must be sampled in experiments with sugarcane (Saccharum officinarum) full-sib families in order to provide an effective estimation of genetic and phenotypic parameters of yield-related traits. The data were collected in a randomized complete block design with 18 sugarcane full-sib families and 6 replicates, with 20 plants per plot. The sample size was determined using resampling techniques with replacement, followed by an estimation of genetic and phenotypic parameters. Sample-size estimates varied according to the evaluated parameter and trait. The resampling method permits an efficient comparison of the sample-size effects on the estimation of genetic and phenotypic parameters. A sample of 16 plants per plot, or 96 individuals per family, was sufficient to obtain good estimates for all traits considered of all the characters evaluated. However, for Brix, if sample separation by trait were possible, ten plants per plot would give an efficient estimate for most of the characters evaluated.

【 授权许可】

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