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Title of Journal: Plant Ecol

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Abbravation: Plant Ecology

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Springer Netherlands

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DOI

10.1007/bf01197965

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ISSN

1573-5052

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Recovery of genetic diversity in threatened plants

Authors: Naoyuki Nakahama Yuki Hirasawa Tsubasa Minato Masahiro Hasegawa Yuji Isagi Takashi Shiga
Publish Date: 2015/11/25
Volume: 216, Issue: 12, Pages: 1635-1647
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Abstract

The reintroduction of ex situ conserved individuals is an important approach for conserving threatened plants and reducing extinction risk In this study we elucidated the effects on the genetic diversity of wild populations of Vincetoxicum pycnostelma Kitag =Cynanchum paniculatum Bunge Kitag by modelling the genetic consequences of reintroducing plants using the germinated seeds of herbarium specimens This seminatural grassland herb is threatened in Japan First we tested the germinability of seeds from herbarium specimens collected from nine sites in Kinki and Tokai districts Japan one specimen per site total 206 seeds Next we analysed the genetic diversity and structure of germinated seedlings and the current wild individuals using nine polymorphic microsatellite markers Germination was observed for 38 seeds 184  from four specimens collected 3–18 years prior to the study Although the genetic diversity of the specimens’ seeds was lower than that of the wild population because of the small sample size the seedlings from specimens taken from three sites had unique alleles that did not exist in the wild populations Consequently viable herbarium specimens’ seeds with unique alleles could be useful resources for recovering the genetic diversity in threatened wild plant populations

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