Production of Dwarfs in Rabbiteye Blueberry ( V. VirgatumAiton) Crosses
DOI:
https://doi.org/10.71318/apom.2021.75.1.31Keywords:
V. ashei, pentaploid, hexaploidAbstract
Dwarf phenotypes segregated from an interploid 6x × 5x blueberry cross of ‘Montgomery’ (rabbiteye) × US 1771 [highbush × (rabbiteye × V. constablaei)]. To evaluate inheritance, several dwarf segregants were used as pollen sources onto both rabbiteye cultivars and species-introgressed rabbiteye hybrids. Segregation ratios of normal to dwarfs in offspring populations ranged from 6.2:1 to 8.8:1. The dwarfism appears to follow a generally recessive model; however, a limited number of dwarf × dwarf crosses segregated both normal and dwarf types, suggesting that epistatic interactions are involved. A dwarf segregant from the ‘Montgomery’ × US 1771 cross, US 2194-A, appears to have value for reliably generating dwarf phenotypes across a range of 6 xmaterial and may be useful in generating reduced-stature plants for both commercial production and for ornamental uses.
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