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A proposal for analysis of genetic divergence among germplasm bank accessions

Cosme Damião Cruz^I; Antonio Vander Pereira^II; Roland Vencovsky^III

^IDepartamento de Biologia Geral, Universidade Federal de Viçosa, 36570 Viçosa, MG, Brasil. Send correspondence to C.D.C.
^IIEMBRAPA/CPAC, Caixa Postal 70.0023, 73300 Planaltina, DF, Brasil
^IIIDepartamento de Genética, ESALQ/USP, Caixa Postal 83, 13400 Piracicaba, SP, Brasil

ABSTRACT

In view of the difficulties commonly encountered in the analysis of germplasm bank data, when large numbers of accessions are involved and several traits are evaluated, we propose a system of analysis for accession characterization in which the original group is divided into subgroups according to the traits considered to be of greatest importance by the breeder. After subdivision, divergence is evaluated within the group considered to be elite (most important for the breeder) and between this group and the others. This system of analysis permits dynamic manipulation of germplasm bank data, and the formation of groups according to the breeder's criteria leads to considerable simplification of data computation and efficient synthetization of the information available.

Keywords: Genetic divergence; Germplasm.

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