Fruit color of selections of native V. elliotti Chapm. varied from black to blue. Wax on fruit was occasionally found to be globular in form but most often waxes were found to range from flat plates to upright platelets and from horizontal rods to long upright rods. Combinations of wax forms occurred in varying densities on the fruit of native selections. Upright rods and platelets accounted for the blue fruit color. Mature black fruit usually had a limited amount of platelet wax and no rodlet structures. β-Diketones were absent or nearly absent on these mature black fruit. Black fruit had some of the higher weight loss measurements. The paraffin content of the fruit wax was relatively high at one location for some black selections and appeared to reduce weight losses of these selections to levels similar to the bluer selections. Leaves had only globular wax forms, less wax than fruit, and considerable variation in the density of acerate trichomes. Leaf hair density and distribution on leaves was independent of variation in wax forms on fruit.
Received for publication December 26, 1978. Florida Agricultural Experiment Stations Journal Series No. 1593.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.
Assistant Professor Fruit Crops, University of Florida, Gainesville, Florida 32611.
Present address: Horticultural Research Station, P.O. Box 720, Gosford, New South Wales, 2250 Australia.