Abstract
Genetic divergence was studied in 41 genotypes of Corylus colurna on the basis of 15 morphological characters of nuts. The divergence among genotypes was estimated by the Mahalanobis' method and the studied genotypes were grouped into clusters by Tocher's method. The obtained data were analysed using the PCA and CA. As a result, 9 genotype clusters were distinguished and a wide diversity among genotypes originating from the same locality was found. It has been proposed that for obtaining the most desirable transgressive segregates in Corylus colurna, genotypes from the genetically most distant clusters should be crossed.
References
Botu M., Achim G. & Turcu E. 1999. Evaluation of some chestnut selections from the populations formed into the ecological conditions from the North-East of Oltrnia. International Society of Horticultural Science. Acta. Hort. 494: 77-83.
De R. M., Seetharaman R., Sinha M. T. & Banarjee S. P. 1988. Genetic divergence in rice. Indian J. Genet. 48: 189-94.
Faostat data 2007. http://faostat.fao.org/site/567/defaults.aspx
Murty B. R. & Arunachalam V. 1966. The nature of divergence in relation to breeding system in crop plants. Indian J. Genet. 26: 188-198.
Norusis M. 1994. SPSS Professional Statistics, 6.1 SPSS, Chicago.
Pandey G. & Tripathi A. N. 2007. Estimation of genetic divergence in walnut. Indian J. Hort. 64(4): 399-401.
Rao E. S., Verma V. K. & Munshi A. D. 2003. Breeding potential of cucumber (Cucumis sativus L.) genotypes using D2 analysis. Indian J. Hort. 60(1): 53-58.
Rao C. R. 1952. Advanced Statistical Method in Biometrical Research. John Wiley & Sons, New York.
Sadasivam S. & Manickam A. 1992a. Fat (Lipids). In: Biochemical Methods for Agricultural Science, pp. 26-27. Wiley Eastern Ltd, New Delhi.
Sadasivam S. & Manickam A. 1992b. Aminoacid and Protein. In: Biochemical Methods for Agricultural Sciences, pp. 34-37. Wiley Eastern Ltd, New Delhi. Sardana S., Borthakur D. N. & Laakanpal T. N. 1997. Genetic divergence in rice germplasm of Tripura. Oryza 34: 201-08.
Singh R. K. & Choudhary B. D. 1979. Biometrical methods in quantitative genetics analysis. 318 pp. Kalyani Publisher, Ludhiana.