Fig. 3.

Morphology of polyploid plants. a) In vitro plantlets 2 weeks after the subculture. b) Leaves of in vitro plants two weeks after the subculture. c) Root formation of in vitro plantlets one month after the subculture. d) Three month-old plants after transfer the acclimatized plantlets to the greenhouse. e) and f) Flowers 4 months after transfer the acclimatized plantlets to the greenhouse. From left to right (a, b, d, e, f): diploid, tetraploid, hexaploid and octaploid plant, respectively. In (c), diploid (upper left), tetraploid (upper right), hexaploid (lower left) and octaploid (lower right).