A general model for sample size determination for collecting germplasm

Sapra, R. L. ; Narain, Prem ; Chauhan, S. V. S. (1998) A general model for sample size determination for collecting germplasm Journal of Biosciences, 23 (5). pp. 647-652. ISSN 0250-5991

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Official URL: http://ns1.ias.ac.in/jbiosci/december1998/no5o.pdf

Related URL: http://dx.doi.org/10.1007/BF02709178

Abstract

The paper develops a general model for determining the minimum sample size for collecting germplasm for genetic conservation with an overall objective of retaining at least one copy of each allele with preassigned probability. It considers sampling from a large heterogeneous 2 k-ploid population under a broad range of mating systems leading to a general formula applicable to a fairly large number of populations. It is found that the sample size decreases as ploidy levels increase, but increases with the increase in inbreeding. Under exclusive selfing the sample size is the same, irrespective of the ploidy level, when other parameters are held constant. Minimum sample sizes obtained for diploids by this general formula agree with those already reported by earlier workers. The model confirms the conservative characteristics of genetic variability of polysomic inheritance under chromosomal segregation.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Conservation; Germplasm; Polysomic; Vegetative; Inbreeding
ID Code:24389
Deposited On:29 Nov 2010 09:01
Last Modified:17 May 2016 08:06

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