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  1. Vol. 10 No. 4, p. 357-361
     
    Received: Nov 21, 1969
    Published: July, 1970


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doi:10.2135/cropsci1970.0011183X001000040012x

Influence of Sample Size on the Estimation of Genetic Variances in a Synthetic Variety of Maize. I. Grain Yield1

  1. Fidel Marquez-Sanchez and
  2. Arnel R. Hallauer2

Abstract

Abstract

We conducted an experimental study to determine the influence of sample size on the estimation of genetic components of variance for the nested mating scheme (Design I) in maize (Zea mays L.). Estimates were obtained for different numbers of males each mated to a constant number of females and for different numbers of females mated per male. Estimates of the genetic variance (σA2, σD2) components and their standard deviations were calculated for each sample size. Graphs of the standard deviations of the variance components were used to compare the relative precision of the estimates for various sample sizes. It was concluded that at least 4 females per male should be used and that 6 to 8 females mated to at least 48 males would be preferable for estimating components of genetic variance for yield in maize.

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