Abstract
Genetic variation within and differentiation among four populations of Takakia lepidozioides Hatt. & H. Inou. was assessed using starch-gel electrophoresis with 16 putative loci of 12 enzyme systems. Though T. lepidozioides reproduces asexually by deciduous leaves and fragments of aerial shoots, moderate genetic variation was found within populations (Hs = 0.068 on average). Of the total genetic diversity, only 29.7% was expressed as differences among populations. Genetic distance between distant populations (Central Japan and Borneo; Nei's genetic distance (D) = 0.043) is revealed to be comparable to that among three Japanese populations (D = 0.053). Full dependence of T. lepidozioides on asexual reproduction might be a factor causing the moderate genetic variation within and low genetic differentiation among populations.
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