version ISSN 0258-5936
ALONSO, R. A et al. Evaluación In Situ de la variabilidad genética de los chiles silvestres (Capsicum spp.) en la región Frailesca del estado de Chiapas, México. cultrop [online]. 2008, vol.29, n.2, pp. 49-55. ISSN 0258-5936.
A research study was carried out with the aim to evaluate in situ the genetic variability of wild chilli from the Frailesca region of Chiapas state. The experimental sample was made up of 10 % of the communities and producers from each municipality. The sampling unit was the site with plants. In situ evaluation was based on quantitative and qualitative characteristics contained in the term Capsicum. Variability was measured through Margalef, Simpson and Sorensen´s diversity indexes. The highest discriminant quantitative characters were: flower number per axil, filament length, diameter, fruit length and weight, placenta length, 1000-seed number and weight. As a result of the discriminant analysis, three groups were formed: group 1, where Capsicum annuum prevails, with six accessions having characteristics from C. frutescens; group 2, integrated by accessions from Capsicum frutescens, and group 3, with C. annuum cultivated. There was an evident existence of high levels of variability in the chilli samples evaluated, which formed three groups with characteristics identifying the species: Capsicum frutescens L., Capsicum annuum L. and 12 cultivated accessions from Capsicum annuum. The highest variability was recorded in La Concordia and Villaflores municipalities, where there are conditions for preserving in situ variability
Keywords : biodiversity; genetic resources; germplasm.