Review of reproductive ecology of Bryophytes
苔藓植物生殖生态学研究

Recently investigations on reproductive ecology of Bryophytes have got remarkably progresses, mainly including breeding system, cost and strategy of reproduction, as well as influence of reproductive pattern on genetic diversity of population. Ratios of sexual reproduction were low because of primitive reproductive pattern with particular requirement of water and common dioecious phenomenon. Frequency of sexual reproduction was especially low in female (from gamete production through sporophyte maturation), so the cost of realized sexual reproduction incurred by female was restricted to sex expression (gamete production).On average, male incurred a greater cost in gamete production than female did, so that female dominated sex ratio might be a product of a higher average cost of sex expression in male. Sporophyte abortion would be influenced by regulation of resource allocation in maternal segment. Asexual reproduction in heterogeneous habitats showed a greater fitness value, which was beneficial to population development and maintenance. Higher genetic diversity was discovered in Bryophyte population using kinds of molecular marker, and there was no direct relationship between reproductive patterns and genetic variability, but different dispersal ability between spore and vegetative fragment would arouse profound influence on population differentiation.