Author:
Rahimi Mehdi,Debnath Sandip
Abstract
AbstractSelection of desirable genotypes or progenies is perhaps the most important practical method in plant and animal breeding programs. The selection index method is the most useful method to choose superior genotypes based on using simultaneous several traits. The optimum and base selection indices are the two indicators that are most used in plant and animal breeding. In this paper, a simple and practical code was developed for the analysis of optimum, base, and Pesek and Baker selection indices. Four different criteria were used to evaluate the selection index, and the phenotypic and genotypic variance–covariance matrix of traits was obtained based on statistical or genetical design. Moreover, an index that was more efficient on these coefficients was used for the breeding program. The results showed that simultaneous selection for the important traits desired by the breeder through economic values such as heritability, genetic, or phenotypic correlation is the most effective method for selecting the best genotypes. Therefore, the best progeny or genotype can be selected to use in breeding programs. This program provides detailed information on selection indices of segregation and natural populations involving any number of individuals or genotypes. These codes are much easier and simpler than other programs and provide more information than other programs. This code is easy to execute in both R and SAS programs.
Publisher
Springer Science and Business Media LLC
Reference39 articles.
1. Dudley, J. W. Quantitative genetics and plant breeding. In Advances in Agronomy (ed. Sparks, D. L.) 1–23 (Academic Press, 1997).
2. Wricke, G. & Weber, E. Quantitative Genetics and Selection in Plant Breeding (Walter de Gruyter, 1986).
3. Pešek, J. & Baker, R. Desired improvement in relation to selection indices. Can. J. Plant Sci. 49, 803–804 (1969).
4. Laly, J. C. Statistical Methodology for Selection Procedures in Poultry Breeding Ph.D. thesis, (2005).
5. Costa, M. M. et al. Analysis of direct and indirect selection and indices in soybean segregating populations. Crop Breed. Appl. Biotechnol. 8, 47–55 (2008).