ISHS Acta Horticulturae 146: International Workshop on Controlling Vigor in Fruit Trees
DWARFED PLANTS IN SOME BLUEBERRY (VACCINIUM) SEEDLING POPULATIONS |
| Authors: | A.D. Draper, C.K. Chandler, G.J. Galletta |
| Abstract:
Two dwarfed plants, US115 and US116, appeared in a seedling population from a cross of 2 selections used in the breeding of highbush blueberry. To determine whether the dwarf character is genetically transmitted US115 and US116 were crossed reciprocally and US115 was self-pollinated to produce 3 F2 populations. The dwarf clones were also crossed to cultivars of normal size to produce 2 backcross populations. Seedlings of the F2 populations ranged in size from extremely dwarfed (smaller than US115 and US116) to normal. Seedlings of the backcross populations ranged in size from that of the dwarf parents to that of the normal parents. The segregation data appeared to not fit any of the tetraploid genetic ratios for a single locus, but appeared to follow a continuous distribution. Due to the range in size of dwarf plants it is difficult to separate dwarf from normal plants. | |
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