Volume 56 Number 2 Article 14
Year 2002 Month 4
Title: Development of Highbush Blueberry Cultivars Adapted to Florida
Author: P. Lyrene
Abstract:
The low-chill southern highbush blueberries now being grown in Florida were developed by crossing northern highbush cultivars, which had large fruit, high fruit quality, and early ripening but were
poorly adapted in Florida, with Florida native blueberry species, which were well-adapted but were lateripening
and had small fruit.
In formulating the foundation populations for recurrent selection during
the 1950s, most of the parentage was northern highbush, and less was Florida native.
This paper presents the hypothesis that faster progress could have been made if a higher percentage of the original gene
pool had been derived from the adapted natives.
The hypothesis is based on the observation that good
environmental adaptation depends on many independent components, most of which are hard to evaluate accurately in small plots in one year, whereas large fruit, high fruit quality, and early ripening are
easier to evaluate in single-plant plots in a single year.
The ability to evaluate young plants in small
plots allows rapid cycles of recurrent selection during which the selected characters can quickly be improved.
Florida native blueberry species that could have been used more in breeding include diploid
Vaccinium darrowi Camp, diploid highbush blueberry (V. corymbosum L.) from the Florida peninsula
between Ocala and Lake Okeechobee, and tetraploid highbush blueberry (V. corymbosum L.) from
northeast Florida and southeast Georgia.
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