Adventitious Shoots Formation by Flower Bud Culture of Primula veris, Primula vulgaris, and Primula juliae

摘要

Selections of Primula x polyantha hort. are important pot flowers in Japan, which are complex hybrids of P. elatior (L.) Hill, P. veris L., and P. vulgaris Hudson, commonly called polyanthus. In addition, hybrids of polyanthus and P. juliae Kusnetsowwere called Juliana hybrid or Julian, and they were produced as well as polyanthus. Homogeneous seed production is difficult because they are allogamous plant.Callus induction and regeneration from vegetative organs has not been successful in polyanthus and Julian types, although in P. juliae callus was induce easily and a few adventitious shoots were abtained from flower bud culture.