Identification of a TRADITOM core collection

The objective of this task was to identify a core collection of 200 tomato traditional varieties. A special focus will be put on the diversity existing within traditional varieties, like Pomodoro di Belmonte, de penjar/da serbo, Tomate Valenciano, Pera de Girona or Marmande types. Analysis tools involving multivariate analysis, e.g. adegenet (Jombart 2008; Jombart and Ahmed 2011) and Principal Coordinates Analysis (PCoA) was be used to further quantify the amount of variability within and between the traditional tomato accessions. The comprehensive core collection will represent the variability between and within varieties. Leading principles for selection of core collections were done according the guidelines for optimizing both phenotypic and genotypic diversity within the core collections (Odong 2012) .