Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 18:57-62 (1978)
© 1978 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Minimum Sample Size for Estimating Progeny Mean and Variance1

Kuo Kao Wu, Don J Heinz, Hans K. Meyer and Sheldon L. Ladd2

Minimum sample size is defined as the minimum number of individuals necessary to estimate, with reasonable precision, mean and variance of a trait in a population.

Repeated random samples for various sample sizes were taken for each of four yield components in five sugarcane (Saccharum sp.) hybrid populations grown in two contrasting environments over 2 years in three selection stages. Means and variances of the samples were compared with those of the populations. Forty individuals from a population were found to be the minimum sample size required to estimate mean and variance for refractometer solids, stalk number, stalk diameter, or stalk length.

Key Words: Monte Carlo method.

1 Contribution from the Dep. of Genetics and Pathology, Hawaiian Sugar Planters' Assoc. Exp. Stn., Aiea, Hawaii. Research supported in part by USDA, ARS, grant #12-14-5001-34. Published with the approval of the Director as Paper No. 414 in the Journal Series of the Exp. Stn., Hawaiian Sugar Planters' Assoc.

2 Respectively, assistant plant breeder; head, Dep. of Genetics and Pathology; associate plant breeder, HSPA Exp. Stn.; formerly, plant breeder, HSPA Exp. Stn., present position, associate professor, Dep. of Agronomy, Colorado State Univ., Ft. Collins, CO 80523.

Received for publication January 26, 1977.




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