1. Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, Massachusetts 02138 USA
2. Arnold Arboretum of Harvard University, 1300 Centre Street, Boston, Massachusetts 02131 USA
3. Department of Pomology, Aula Dei Experimental Station‐CSIC, 1005 Avda. Montañana, Zaragoza, Spain 50059
4. Department of Subtropical Fruits, Instituto de Hortofruticultura Subtropical y Mediterránea “la Mayora,” (IHSM la Mayora–CSIC–UMA), Algarrobo–Costa, Málaga, Spain 29750