Analysis on genetic diversity of mangrove species of Sonneratia and relationship to plant introduction

RAPD markers were used to assess the relationships among 6 species of Sonneratia in the National Mangrove Nature Reserve of Dongzhai Harbor in Hainan. By using the 15 effective 10 -oligonucleotide arbitrary primers, a total of 512 DNA bands were amplified, among which 297 (58.01%) were polymorphic. Based on UPGMA cluster analysis of 512 DNA bands amplified by the thirty primers, a DNA molecular dendrogram was established, which divided 6 species of Sonneratia into three main groups. Group A included 4 species: Sonneratia apetala , S. hainanensis, S. abla, S. ovata, and Group B: S. paracaseolaris and Group C: S. caseolaris only contained one species respectively. Group A could be divided into two subgroups, A1; Sonneratia apetala , S. hainanensis, S. covata and A2: S. abla; Two populations of Sonneratia apetala, which were from Hainan and Fujian (introduced from Hainan) respectively, were compared by RAPDs. The phenotypic frequencies detected by the 15 primers were calculated and used to estimate diversity (H) within sub-populations. Fujian sub-population exhibited 0.669 and Hainan exhibited 0.671 variability. Shannon's index of phenotypic diversity was then used to partition the diversity within and between sub-populations components. An assessment of the proportion of diversity present within sub-populations, Hpop/Hsp = 0.933, compared with that between sub-populations, (Hsp- Hpop) /Hsp = 0.067, indicates that, on average, most of the diversity (93.3%) is detected within sub-populations; while only 6.7% between populations. The plant introduction of S. hainanensis and S. ovata, which have the nearer genetic distance with Sonneratia apetala , is also discussed.

Make Greater Contributions to Development of Our National Electric Power Industry -Introduction to Shanghai Relay plant

Shanghai Relay Plant (SRP) was founded in 1959. With continuous development in nearly 40 years, SRP has become one of the biggest specialized manufacturers of protective relaying and distribution automation equipment for power system in China and a key enterprise of the Ministry of Machinery Industry. SRP was evaluated a State Second-Grade Enterprise in 1988 and awarded

Fifty Years of Botanical Gardens in China

The development, distribution and features of one hundred and forty botanical gardens (BGs) in China are reported and their functions on research, conservation, display and utilization of biodiversity are summarized in this paper. The contributions to the social and economic development in the early stage of Chinese BGs with the researches of economic plant (tobacco), medicinal plant (yam) and wild fruit tree resources are evaluated. The theoretical and applied achievements in recent years in seed science, plant conservation, economic plant introduction, acclimatization and breeding are also described. A general scope of living plant collections in Chinese BGs is presented and the outstanding ones, including Magnoliaceae, Zingiberaceae, Cycadaceae, medicinal plants, Actinidia and Rhododendron are particularly mentioned. With special reference to Chinese penjing art garden and silicified wood garden, the development of scientific popularization and tourism in BGs is reviewed.

Introduction of Institute of Medicinal Plant Development

Institute of Medicinal Plant Development (IMPLAD), affiliated with the Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), was established in August 1983. IMPLAD, headquartered in the Zhongguancun Scientific and Technical Zone, Beijing, China, owns three branch institutes with total over 333 hectares of land in the subtropical regions of southern China, located in