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Revista Chapingo. Serie horticultura

versão On-line ISSN 2007-4034versão impressa ISSN 1027-152X


MARTINEZ-SANCHEZ, David; PEREZ-GRAJALES, Mario; RODRIGUEZ-PEREZ, Juan Enrique  e  MORENO PEREZ, Esaú del Carmen. Collection and morphological characterization of 'water chilli' pepper (Capsicum annuum L.) in Oaxaca, Mexico. Rev. Chapingo Ser.Hortic [online]. 2010, vol.16, n.3, pp.169-176. ISSN 2007-4034.

Oaxaca state of Mexico has a number of zones with 'water chilli' pepper, (Capsicum annuum L.) which differ in their physiographic and agro-ecological characteristics. With the objective of to generate knowledge that contributes to the conservation and genetic improvement of the productive potential of this species of chilli, in eight zones, germplasm was collected and characterized in situ during 2006 and 2007 under a completely random sampling using two locations and ten plants per location, which used the guide to the International Plant Genetic Resources Institute. To decrease the environmental effect of the collection sites, was carried out ex situ morphological characterization, during 2008, under greenhouse conditions, therefore the eight collections (360 plants) were grown under an intensive system in hydroponics, in a design completely randomized. The information was extracted from eight samples taken every fifteen days. From analysis of variance and covariance were identified descriptors root, stem, flower, fruit and seed, to distinguish collections. In the cluster analysis of cluster (Ward minimum variance) and describe the characteristics of the grouping responsible (principal components analysis) were identified three groups and Ocotlán germplasm as promising for a process of genetic improvement by to present the fruits with the characteristics most desirable for the market.

Palavras-chave : Morphology; Capsicum descriptors; germplasm; multivariate analysis.

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