Characteristics of plums from the University of Florida breeding program

Wayne B. Sherman, Robert E. Rouse

Abstract


'Gulfruby', 'Gulfbeauty', 'Gulfblaze', and 'Gulfrose' Japanese-type plums (Prunus salicina Lindl.) arose from the University of Florida plum breeding program. They are adapted from southern through northern Florida because they appear to require low amounts of winter chilling, but high heat units to force flowers and foliation following winter. They also are resistant to Plum Leaf Scald [Xylella fastidiosa Wells et al.]and Bacterial Spot [Xanthomonas campestris pv. pruni (Smith) Dye], the two main diseases of plums in the eastern United States. They require cross-pollination and appear to be crossfruitful in all combinations. Tree and fruit characteristics for these varieties are presented and compared for identification and for general knowledge of their advantages and characteristics. These cultivars are recommended for the home garden and for grower trial because they ripen in late April to late May when few plums are available in the markets from other United States sources and prices are likely to be high.

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283