Identification of unreduced gamete origin in citrus interploid crosses (2x x 4x) by means of SSR markers

One of the most important goal in Citrus genetic improvement is the obtainment of seedless cultivars. Among the available strategies, we used the accomplishment of suitable interploid crosses (2X x 4X). To this purpose, three allotetraploid somatic hybrids have been used as pollen parent in sexual crosses with diploid 'Femminello' lemon, and autotetraploid 'Dancy' mandarin as pollen parent in crosses with diploid grapefruit and mandarin.