Abstract

MARULANDA, Marta Leonor; LOPEZ, Ana María; URIBE, Marcela  and  OSPINA, Carlos Mario. Genetic variability of Cordia alliodora (R. & P.) Oken progenies. Colomb. for. [online]. 2011, vol.14, n.2, pp.119-135. ISSN 0120-0739.

Cordia alliodora is a well-known wood producer tree of tropical areas of Latin America and the Caribbean characterized for producing valuable wood and by its fast growth rate. In Colombia, it is frequent on agro-forestal systems with coffee. This species, like most forest species have biological problems for genetic improvement programs, such as long regeneration periods and high costs for supporting a population in a long term. The molecular assisted markers in plant breeding programs have had a great impact on genetic improvement, due to the fact they minimize their intervals of regeneration, increase the genetic gain by generation and allow the evaluation of the genetic information essential for the species. In this work, 60 genotypes of C. alliodora were characterized, belonging to the provenance and progenies tests established by the program of genetic improvement of Cenicafé. The characterization was carried out through microsatellite markers, after developing a genomic library enriched with microsatellites of the species. Finally, 24 specific microsatellites were evaluated, 20 of which allowed the detection of 28 polymorphic and multiallelic loci. These results provide a guide for orienting the policies of sustainable production and conservation of this valuable species; also, it provides a useful tool for the identification of clones with commercial interest.

Keywords : Boraginaceae; Cordia; provenance and progeny trials; microsatellites; Nogal cafetero; SSR.

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