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- Title
Genetic diversity of natural and planted Glyptostrobus pensilis populations: A comparative study.
- Authors
WU Ze-yan; LIU Jin-fu; HONG Wei; PAN Dong-ming; ZHENG Shi-qun
- Abstract
Glyptostrobus pensilis is a rare and endangered relict species in China. To make a comparative study on the genetic diversity and genetic structure of natural and planted G. pensilis populations would have significance in the conservation and proliferation of the species. Samples from the main distribution regions of G. pensilis were analyzed by ISSR (inter simple sequence repeats) molecular marker. A total of 95 discernible DNA fragments were detected with 10 ISSR primers, of which, polymorphic loci occupied 39郾0%, suggesting that the genetic variation in the test G. pensilis populations was at a very low level, compared with other endangered gymnosperm. The genetic differential index (Gst =0郾3982) and the gene flow (Nm =0郾3778) indicated that there existed genetic differentiation among populations but the differentiation dominated within populations. There was a significant positive correlation between genetic distance and geographical distance. The mean values of polymorphic loci (P), Nei爷s gene index (He), and Shannon information index (I) of natural populations (P =39郾9% , He =0郾1499, I =0郾2202) were much higher than those of planted G. pensilis populations (P =30郾7% , He =0郾1265, I =0郾1759), and the coefficient of gene differentiation (Gst) and genetic distance (D) of natural populations (Gst =0郾4513, D =0郾0301) were also much higher than those of the planted populations (Gst =0郾3025, D =0郾0192).
- Subjects
GENETIC research; PLANT genetics; COMPARATIVE studies; PLANT variation; GYMNOSPERMS; STATISTICAL correlation; BALDCYPRESS
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2011, Vol 22, Issue 4, p873
- ISSN
1001-9332
- Publication type
Article