NDLI: Patterns of genetic variation and demography ofCycas taitungensis in Taiwan

Content Provider	Springer Nature Link
Author	Huang, Shong Hsieh, Hui Ting Fang, Kang Chiang, Yu Chung
Copyright Year	2004
Abstract	Cycas taitungensis Shen, Hill, Tsou & Chen is an endemic species remaining in two remnant populations in southeastern Taiwan. Ecological studies showed that the sex ratio between female and male of the main population is approximately 1.7:1. Leaf production was found to be correlated with tree height before reaching 1 m in length (r = 0.95). The annual reproduction rate of female plants is highly variable, with seed numbering between 80 and 400 in each tree. The site study revealed a significant difference in vegetative growth and age structure between the subpopulations collected in two opposite microhabitats. Genetic studies using isozyme analysis showed low genetic variability (H$_{E}$ = 0.039) and little genetic differentiation between the populations (F$_{ST}$ = 0.051). The genetic data are well correlated with the ecological observation that the differences reflect various microhabitat effects within a very local environment and that the impact influenced the extent of the degree of genetic differentiation within local populations. This work presents extensive genetic information forC. taitungensis that give rise to more ecological and genetic insights into the plant for better establishment of in situ and ex situ conservation programs.
Starting Page	86
Ending Page	92
Page Count	7
File Format	PDF
ISSN	00068101
Journal	The Botanical Review
Volume Number	70
Issue Number	1
e-ISSN	18749372
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Sciences Plant Systematics/Taxonomy/Biogeography Plant Anatomy/Development Plant Physiology Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Ecology, Evolution, Behavior and Systematics

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