Summary
The pattern of diversity in forty genotypes of clusterbean (Cyamopsis tetragonoloba (L.) Taub) was analysed using the centroid method of factor analysis based on nine characters. Three factors were found to adequately account for most of the intercorrelations in the four environments. Branches, clusters, pods and seed yield/plant could be grouped as productivity factors; days to flowering, maturity and plant height as growth factors; seeds/pod and gum content as economic factor. Interestingly, the constitution of the factors were the same in all the environments. The loadings on the economic factors were relatively unstable, whereas the loadings on productivity and growth factors were stable. It is concluded that productivity and growth factors play a pivotal role towards diversity in clusterbean. The results of factor analysis provides confirmatory evidence of diversity in clusterbean, which was earlier studied by using generalized distance, and thus proves the adequacy of the centroid method in biological investigations.
Similar content being viewed by others
Literature
Cattel, R.B. (1965): Factor analysis: An Introduction to essentials I. The purpose and underlying models. Biometrics 21, 190–215
Cattel, R.B. (1965): Factor analysis: An Introduction to essentials II. The role of factor analysis in research. Biometrics, 21, 405–435
Fruchter, B. (1967): An Introduction to Factor Analysis: D. Van Nosli and Co.
Holzinger, K.J.; Harman, H.H. (1941): Factor Analysis. Chicago: University of Chicago Press
Lawley, O.N.; Maxwell, A.E. (1963): Factor analysis as a Method. London: Butterworths
Maxwell, A.E. (1961): Recent trends in factor analysis. J. Roy. Statis. Soc. A. 124, 49–59
Murty, B.R.; Arunachalam, V. (1970): Factor analysis of diversity in the genus sorghum Indian J. Genet. 27, 123–135
Rao, C.R. (1964): The use of interpretation of principal component analysis in applied research. Sankhya 26A, 329–358
Rao, G.V.S. (1980): Studies on genetic variability and association of seed characters with gum content in guar (Cyamopsis tetragonoloba (L.) Taub.) Ph. D. Thesis, Jodhpur: University of Jodhpur
Author information
Authors and Affiliations
Additional information
Communicated by G. S. Khush
Rights and permissions
About this article
Cite this article
Rao, G.V.S., Paroda, R.S. Factor analysis in clusterbean (Cyamopsis tetragonoloba (L.) Taub). Theoret. Appl. Genetics 62, 273–276 (1982). https://doi.org/10.1007/BF00276250
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00276250