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Annals of Botany 92: 409-414, 2003
© 2003 Annals of Botany Company

Genetic Diversity of Hibiscus tiliaceus (Malvaceae) in China Assessed using AFLP Markers

TIAN TANG1, YANG ZHONG2, SHUGUANG JIAN1,3 and SUHUA SHI*,1

1 Key Laboratory of Gene Engineering of the Ministry of Education, Zhongshan University, Guangzhou 510275, People’s Republic of China, 2 Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200433, People’s Republic of China and 3 South China Botanical Garden, Academia Sinica, Guangzhou 510650, People’s Republic of China

* For correspondence. Fax 86-20-34022356, e-mail lssssh{at}zsu.edu.cn

Received: 9 December 2002; Returned for revision: 20 February 2003; Accepted: 30 May 2003


  Abstract

Amplified fragment length polymorphism (AFLP) markers were used to investigate the genetic variations within and among nine natural populations of Hibiscus tiliaceus in China. DNA from 145 individuals was amplified with eight primer pairs. No polymorphisms were found among the 20 samples of a marginal population of recent origin probably due to a founder effect. Across the other 125 individuals, 501 of 566 bands (88·5 %) were polymorphic, and 125 unique AFLP phenotypes were observed. Estimates of genetic diversity agreed with life history traits of H. tiliaceus and geographical distribution. AMOVA analysis revealed that most genetic diversity resided within populations (84·8 %), which corresponded to results reported for outcrossing plants. The indirect estimate of gene flow based on {phi}ST was moderate (Nm = 1·395). Long-distance dispersal of floating seeds and local environments may play an important role in shaping the genetic diversity of the population and the genetic structure of this species.

Key words: Hibiscus tiliaceus, sea hibiscus, tree hibiscus, AFLP, genetic diversity, China.


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