Premium
Genetic diversity and genetic structure of populations of Ranunculus japonicus Thunb. (Ranunculaceae)
Author(s) -
Okada Hiroshi
Publication year - 2002
Publication title -
plant species biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.419
H-Index - 36
eISSN - 1442-1984
pISSN - 0913-557X
DOI - 10.1046/j.1442-1984.2002.00074.x
Subject(s) - biology , outcrossing , genetic diversity , genetic structure , population , ranunculaceae , genetic variation , isolation by distance , fixation index , genetic distance , ranunculus , evolutionary biology , ecology , zoology , botany , genetics , demography , pollen , sociology , gene
In order to clarify the genetic diversity and population structure of Ranunculus japonicus , allozymic analysis was conducted on 60 populations in southwestern Japan. Considerable genetic variati ons were detected among the populations of R. japonicus . The genetic diversities within species ( H es = 0.215) and within populations ( H ep = 0.172) were slightly higher than those of other perennial herbs with widespread distribution and outcrossing plants. Significantly higher values of fixation index were detected in some populations, which might have arisen from restricted mating partners. The majority of genetic variation (approx. 80%) resided within a population and a moderate level of genetic differentiation ( G ST = 0.203) was observed among populations. The F ST value (0.203) suggests the existence of a substantial population structure in this species. The highly significant correlation between geographic distance and F ST values indicates that isolation by distance has played an important role in the construction of the genetic structure of this species.