ADVENTITIOUS SHOOTS FORMATION BY FLOWER BUD CULTURE OF PRIMULA VERIS, PRIMULA VULGARIS, AND PRIMULA JULIAE^©

Selections of Primula × 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 Kusnetsow were called Juliana hybrid or Julian, and they were produced as well as polyanthus. Homogeneous seed production is difficult because they are allogamous plant.