New Cucumis rootstocks for melon: 'UPV-FA' and 'UPV-FMy'.
The research groups of "Cucurbits" and "Grafting Breeding" at COMAV-UPV (Centro de Conservación y Mejora de la Agrodiversidad Valenciana-Universitat Politècnica de València) in Spain are working together in the development and characterization of new experimental rootstocks for cucurbit crops. Germplasm characterization and crossability studies have been performed within the Cucumis genus to generate vigorous rootstocks suitable for melon. This paper describes two new interspecific Cucumis hybrids that have been developed, with good characteristics to be used as melon rootstocks: 'UPV-FA' (C. ficifolius × C. anguria) and 'UPV-FMy' (C. ficifolius × C. myriocarpus). Both hybrids have good compatibility with cultivars of the two main melon market classes (muskmelon and Piel de Sapo), are resistant to some of the main fungi that are pathogenic to melon (such as Fusarium oxysporum f.sp. melonis and Monosporascus cannonballus), and do not negatively modify melon fruit quality.