|Authors: ||Y. Matsumoto, H. Ohashi|
Primula ×polyantha hort. selections are important pot flowering plants in Japan, however, homogeneous seed production is difficult on account of cross-fertilization (allogamous) plant.
On the other hand, commercial vegetative propagation is also not possible because of low reproduction rates.
Micropropagation is also difficult.
In shoot apex culture, contamination occurs frequently because the shoot apexes occur close to the surface level of the soil.
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