%A QIU Ying-Xiong, FU Cheng-Xin
%T Studies on the endangerment mechanism of and conservation strategies for Changium smyrnioides
%0 Journal Article
%D 2001
%J Biodiv Sci
%R 10.17520/biods.2001023
%P 151-156
%V 09
%N 2
%U {https://www.biodiversity-science.net/CN/abstract/article_8201.shtml}
%8 2001-05-20
%X The resource , the population ecology , structure and characters of seeds , pollination biology
and the relationship between plumpness of seeds and environment were investigated in the rare plant
Changium smyrnioides . The genetic diversity and genetic structure of the species were analysed by
morphological characters of seeds , starch gel elect rophoresis and RAPD analysis. The studies revealed
lack of coordination between the ripening of the seeds and the season of East China , which resulted in
low ratio of seed germination and low rate of population renewal. As human activity has dest royed and
disturbed suitable habitat for the species , the range of each population has decreased and the habitat
has become f ragmented which has decreased gene flow between populations ( Nm < 1. 0) . The low
gene flow suggests that genetic drift may play a prominent role in shaping the present-day genetic composition. Based on these result s , some management st rategies are proposed for protecting this species
effectively.