Resumo

CASTANON-NAJERA, G et al. Identification of variables for the morphological characterisation of hot peppers (Capsicum spp) in Tabasco, Mexico. Universidad y ciencia [online]. 2010, vol.26, n.3, pp.225-234. ISSN 0186-2979.

The aim of this study was to determine the phenotypical diversity of Capsicum and to identify, through a generalised canonical correlation analysis (ACCG) with m ≥ 3 sets of variables, which of these are the most important within and among the groups of variables. Forty Capsicum samples were harvested in the state of Tabasco in 2004 and 2005, and characterised in 2006. Eighteen descriptors were employed: four for the plants, five for the fruits, and nine for the flowers. The study was established in the plant nursery of the Universidad Juárez Autónoma de Tabasco, in Villahermosa, Tabasco, Mexico. Ten plants per type of chili were planted in separate pots. The experimental unit was a single chili plant per pot. The results indicated a variability for all the traits evaluated. In order of importance, the fruit variables presented the greatest variability (the greater variation coefficients), followed by those of the plant, and finally those of the flower. The ACCG determined that the variables plant height (group one), number of axillary flowers, shape of the corolla and position of the flower (group three), were the most important, and that, in group two, the width of the fruit was important (because of its positive sign) in its correlation. The results indicate that the generalised canonical correlation analysis is a useful method to determine the importance of variables, and that there is diversity in the evaluated samples.

Palavras-chave : Samples; canonical correlation; groups of variables; pepper types; morphological variation.

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