Articles
Andean blueberry (V. meridionale Swartz) hybrids with 4x highbush blueberry
Article number
1357_20
Pages
137 – 144
Language
English
Abstract
The tetraploid blueberry species V. meridionale Swartz (Andean blueberry) was successfully hybridized with 2x and 4x section Cyanococcus (blueberry) species.
First-generation hybrids with 2x blueberry produced numerous triploids, all essentially sterile.
In contrast, first-generation hybrids with 4x blueberry selections are both notably vigorous and significantly pollen fertile.
The 4x F1 hybrids are variable as far as branching structure, dormancy, prolificacy, fruit wax, etc.; however, most appear to be semi-evergreen, with small, darkish fruit.
Backcrosses to 4x highbush using the F1s as females have produced offspring morphologically indistinguishable from 4x highbush at the seedling stage.
The F1 hybrids appear to have potential similar to the early 4x V. corymbosum V. darrowii hybrids that gave rise to southern highbush cultivars.
First-generation hybrids with 2x blueberry produced numerous triploids, all essentially sterile.
In contrast, first-generation hybrids with 4x blueberry selections are both notably vigorous and significantly pollen fertile.
The 4x F1 hybrids are variable as far as branching structure, dormancy, prolificacy, fruit wax, etc.; however, most appear to be semi-evergreen, with small, darkish fruit.
Backcrosses to 4x highbush using the F1s as females have produced offspring morphologically indistinguishable from 4x highbush at the seedling stage.
The F1 hybrids appear to have potential similar to the early 4x V. corymbosum V. darrowii hybrids that gave rise to southern highbush cultivars.
Publication
Authors
M. Ehlenfeldt, J. Polashock, J. Luteyn
Keywords
ploidy, V. corymbodendron, allotetraploid
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