Abstract

LOBO ARIAS, Mario; MEDINA CANO, Clara Inés; DELGADO PAZ, Oscar Arturo  and  BERMEO GIRALDO, Armando. MORPHOLOGICAL VARIABILITY OF THE COLOMBIAN COLLECTION OF LULO (Solanum quitoense Lam.) AND RELATED LASIOCARPA SECTION SPECIES. Rev. Fac. Nac. Agron. Medellín [online]. 2007, vol.60, n.2, pp.3939-3964. ISSN 0304-2847.

The morphologic variability of the Colombian collection of lulo, Solanum quitoense Lam, related species of section Lasiocarpa and Solanaceae taxa of other sections, as outgroup, was studied. Ample qualitative and quantitative morphologic variability was found in the two botanical varieties of lulo and the other studied Lasiocarpa species. The 58 qualitative morphologic attributes were polymorphic in this set of taxa, with 73,9% of the total qualitative states included in the descriptor list up today, with 4,2 morphoalleles by variable. In the case of S. quitoense, 52 of the 58 qualitative characters exhibited variability, with 60% of the total variants of the list and 3,4 morphoalleles by characteristic. Also, considerable polymorphism was found in S. hirtum, S. pseudolulo, with potentiality of use of the two studied accessions of S. vestissimum. At quantitative level diversity in all the studied variables was determined. The analysis of main components of the quantitative characters revealed a high contribution of the fruit variables to the total variability of this nature. Qualitative, quantitative and qualitative-quantitative phenograms did not detect identical materials in the studied taxa. The largest taxonomic consistency was exhibited by the phenogram obtained with all the qualitative and quantitative variables.

Keywords : Genetic resources; characterization; evaluation; clustering pattern.

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