Resumo

FLORIDO, Marilyn et al. Análisis de la variabilidad morfoagronómica en la colección de tomate (Solanum L. sección Lycopersicon subsección Lycopersicon) conservada Ex Situ en Cuba. cultrop [online]. 2008, vol.29, n.2, pp. 43-48. ISSN 0258-5936.

The present work was carried out at the National Institute of Agricultural Sciences (INCA), with the aim of characterizing the phenotypic variability of a representative tomato genotype sample, considering morphoagronomic characteristics, including local and commercial varieties as well as wild species from S. lycopersicum var. Cerasiforme, S. pimpinellifollium, S. habrochaites, S. pennellii and S. peruvianum. Thus, 26 morphoagronomic characters related to plant architecture and fruit traits were evaluated. Data were submitted to a Principal Component statistical analysis, in which autovectors with values of ³0.50 in the main axes were selected. Afterwards, 10 k-means cluster analyses from an Euclidian distance matrix and the corresponding discriminant analysis were performed. The best grouping was the most accurate one in classifying groups. Cuban tomato collection sample showed wide morphoagronomic variability, so that it was possible to differentiate nine essential groups: one consisted of accessions from the most distant wild species of S. lycopersicum (S. peruvianum, S. pennelli and S. habrochaites), another one made up by accessions from S. pimpinellifollium and the remaining groups consisted of accessions from S. lycopersicum; accessions from S. lycopersicum var. Cerasiforme appeared in group 1 together with the smallest accessions cultivated

Palavras-chave : tomato; Solanum; Lycopersicon; plant genetic resources; biodiversity; genetic variation.

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