A blog maintained by Tevita Kete, PGR Officer
Secretariat of the Pacific Community (SPC), Suva, Fiji Islands
This weblog documents the activities of Pacific Agricultural Genetic Resources Network (PAPGREN), along with other information on plant genetic resources (PGR) in the Pacific.
The myriad varieties found within cultivated plants are fundamental to the present and future productivity of agriculture. PAPGREN, which is coordinated by the Land Resources Division of the Secretariat of the Pacific Community (SPC), helps Pacific countries and territories to conserve their crop genetic diversity sustainably, with technical assistance from the Bioversity International (BI) and support from NZAID and ACIAR.
SPC also hosts the Centre of Pacific Crops and Trees (CEPaCT). The CEPaCT maintains regional in vitro collections of crops important to the Pacific and carries out research on tissue culture technology. The CEPaCT Adviser is Dr Mary Taylor (MaryT@spc.int), the CEPaCT Curator is Ms Valerie Tuia (ValerieT@spc.int).
PAPGREN coordination and support
Mr William Wigmore
Mr Adelino S. Lorens
Dr Lois Englberger
Mr Apisai Ucuboi
Dr Maurice Wong
Mr Tianeti Beenna Ioane
Mr Frederick Muller
Mr Herman Francisco
Ms Rosa Kambuou
Ms Laisene Samuelu
Mr Jimi Saelea
Mr Tony Jansen
Mr Finao Pole
Mr Frazer Bule Lehi
Interested in GIS?
Sunday, March 05, 2006
Posted 1:33 PM by Luigi
Coconut genetic diversity
Assessing genetic relationships among coconut (Cocos nucifera L.) accessions using inter simple sequence repeat markers
R. Manimekalai (a) and P. Nagarajan (b)
(a) Biotechnology Section, Central Plantation Crops Research Institute, Kasaragod, India
(b) Centre for Plant Molecular Biology, TNAU, Coimbatore, India
Scientia Horticulturae Volume 108, Issue 1 , 16 March 2006, Pages 49-54
Abstract. Thirty-three coconut accessions from a world-wide coconut collection at the International GeneBank in India were analyzed using inter simple sequence repeat (ISSR) markers with 19 primers flanking the simple sequence (microsatellite) repeat regions. Total of 199 ISSR markers were scored, of which 154 were polymorphic. These markers were used to estimate the genetic similarity among accessions using Jaccard's similarity coefficient. Similarity matrix was used to construct a dendrogram and principal coordinate plot to show genetic relationships among accessions. Similarity values ranged between 0.526 and 0.855 and the least similarity was found between Nicobar tall (NICT01) and chowghat orange dwarf (COD). In the dendrogram and principal coordinate plots, coconut accessions from Southeast Asia, South Asia and South Pacific formed separate groups and this grouping was generally in accordance with their origin and pattern of dispersal of coconuts from its centre of origin.
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