STUDY ON THE INTER-AND INTER-POPULATIONAL GENETIC VARIABILITIES OF ENDEMIC MOSS SPECIES

在本研究中，作者可以指出以下问题：(1)生活在高海拔地区的特有物种，日本和马来西亚的种群内和种群间的遗传变异性较低。有趣的是，我们可以在种群中检测到遗传变异，即使很低，因为这个物种只为雄性植物所知，因此它不能有性繁殖。此外，还采集了一种植物。Kinabalu在pgm2中表现出基因复制。(2)我们研究了另外三种营养生长的低地物种。这些物种在种群内和种群间也表现出较低的遗传变异性。然而，流纹藻在种群间表现出较高的遗传差异。通过观察其外部形态，我们可以检测到两个以上的隐种，从而计算出种群间的假高遗传差异。

In this study, the author can point out the following issues ;(1) endemic species, Takakia lepidozioides, inhabiting high altitude places, has rather low genetic variabilities within and among populations in Japan and Malaysia. It is interesting that we can detect genetic variablity within population, even if very low, in Takakia lepidozioides, because this species is only known for male plants, and therefore it can not reproduce sexually. In addition, one plants collected at Mt. Kinabalu shows gene duplication in pgm2.(2) we studied other three lowland species which growing vegetatively. These species also show low genetic variabilities within and among populations. Riccia fluitans, however, show high genetic difference among population. Examing its outer morphology, we can detect more than two cryptic species in Riccia fluitans, and by this reason the false high genetic difference among populations were caluculated.