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2017 Vol.35, Issue 5 Preview Page
Genetic Diversity of a Novel Oil Crop, Camellia brevistyla, Revealed by ISSR DNA Markers
Mong-Huai Su1
,
Te-Hua Hsu2
,
Chun-Neng Wang3
,
Kuan-Hung Lin4,5*
,
Ming-Chang Chiang6
,
Ren-Dong Kang5
,
Khiem M. Nguyen4
,
Hoang Nguyen7
1Department of Forestry and Nature Conservation, Chinese Culture University
2Department of Aquaculture, National Taiwan Ocean University
3Institute of Ecology and Evolutionary Biology, National Taiwan University
4Faculty of Applied Sciences, Ton Duc Thang University
5Graduate Institute of Biotechnology, Chinese Culture University
6Department of Life Science, Fu Jen Catholic University
7NTT Institute of Hi-Technology, Nguyen Tat Thanh University
*교신저자. *Corresponding Author. 
31 October 2017. pp. 588-598
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Abstract

Camellia brevistyla plants are used as food oil in Taiwan. To provide a method for identifying germplasm and assessing the genetic diversity of C. brevistyla, 102 individuals were collected from 29 populations in 11 counties throughout the main island of Taiwan. Inter-simple sequence repeat (ISSR) DNA markers were analyzed and a total of 176 bands were amplified. Of these, 175 bands were found to be polymorphic in these populations. Genetic similarities among populations ranged between 34.1-95.1%. Cluster analysis revealed seven groups of populations plus one outlier (C. kissii). Five individuals from two populations in the southern region were grouped into cluster V, and six populations from both regions were grouped into cluster VII. The remaining populations from the northern region were separated into different clusters from V and VII. Results of an analysis of molecular variance indicated that the variation within populations (75%) was predominantly greater than variations among counties (18%) and among regions (7%). Overall, the gene flow (Nm = 0.509) estimated from genetic differentiation (Gst = 0.534) suggested that gene flow among regions was limited. Higher genetic diversity (H = 0.317), Shannon’s index (I = 0.477), and gene flow (Nm = 0.538) of populations were found in the northern region compared to the southern region. The DNA sequences of C. brevistyla amplified by two oil-biosynthesis genes showed 99-100% homology with those of C. oleifera. Camellia brevistyla populations are highly differentiated and can serve as a basis for the food oil industry as a germplasm resource.

Keywords
geographic regions
germplasm
phylogenetics
population structure
tea oil

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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 35
  • No :5
  • Pages :588-598
  • Received Date : 2017-02-10
  • Revised Date : 2017-06-19
  • Accepted Date : 2017-06-14
  • DOI :https://doi.org/10.12972/kjhst.20170063
Journal Informaiton Horticultural Science and Technology Horticultural Science and Technology
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