Abstract

ARAMENDIZ TATIS, Hermes et al. Morphologic characterization of native corns from Colombian Caribbean Region. Agron. colomb. [online]. 2005, vol.23, n.1, pp.28-34. ISSN 0120-9965.

Maize (Zea mays) is one of the world’s most important food crops, being a staple food for most Latin-American people. This species has evolved in several microenvironments throughout the Colombian Caribbean region, leading to great genetic variability. Due to this specie’s relevance to this area, 255 creole cultivars from Corpoica’s germplasm bank (Monteria, Colombia) and five commercial genotypes were thus agronomically and morphologically characterised at C.I. Turipana. Forty-two CIMMYT/IBPGR descriptors were used for incorporating them into a joint breeding/phytoimprovement programme based on their agronomical attributes. Missing data was estimated where necessary for both quantitative and qualitative variables. Main component and conglomerate analysis was used for processing data. Component analysis revealed that the first five components represented 95.20% of total variance; the major contributors were total spike length, leaf angle and the spike’s peduncle length. The grouping dendrogram revealed two subgroups having high genetic variability, this being considered as being a good source for a breeding programme

Keywords : Zea mays; germplasm; descriptors; main components analysis.

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