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Genetic diversity and coefficient of parentage between clones and sugarcane varieties in Brazil

Author(s): B.P. Brasileiro1, C.D. Marinho1, P.M.A. Costa1, L.A. Peternelli1, M.D.V. Resende2, D.E. Cursi3, H.P. Hoffmann3 and M.H.P. Barbosa4

The success of the development of new sugarcane varieties is associated with the ability to correctly select the genitor. The aim of this study was to evaluate the genetic diversity between 113 clones and sugarcane varieties using the Ward-modified location model procedure with added information about the coefficient of parentage and endogamy. In this study, data was used from 100 experiments that evaluated clones; the experimental phase was conducted in 70 places between the years 2002 and 2009 on the outlining in random blocks. According to the diversity analysis, 3 groups formed: G1, G2, and G3, which were composed of 58, 8, and 47 genotypes, respectively. The clones of groups G1 and G3 were the most outstanding.