刚竹属竹种开花枯败后,能通过有性或无性途径自然更新。花后产生大量能育种子的竹种依靠实生苗更新,花后种子基本不育者依靠更新鞭更新。刚竹属竹种的鞭生长型式属单轴型,但在实生苗阶段呈合轴型生长。现有的单轴型竹种不是从现有的合轴型竹种进化而来,二者可能有共同的二倍体祖先。外源赤霉素能影响某些竹种的有性更新过程。 Phyllostachys pubescens after flowering withered, can be sexual or asexual ways of natural renewal. The large number of fertile seeds after the flowering of bamboo species rely on the regeneration of seedlings, the basic post-flowering seed infertility rely on the updated whip update. The species of whorl of bamboo is a uniaxial type, but it grows coaxially at seedling stage. Existing uniaxial bamboo species do not evolve from the existing coxaxial bamboo species, and both may share a common diploid ancestor. Exogenous gibberellin can affect the sexual regeneration of some species of bamboo.