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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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DIVA-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. * Comments: Post a Comment	Archive October 2002 November 2002 December 2002 January 2003 February 2003 March 2003 April 2003 May 2003 June 2003 July 2003 August 2003 September 2003 October 2003 November 2003 December 2003 January 2004 February 2004 March 2004 April 2004 May 2004 June 2004 July 2004 August 2004 September 2004 October 2004 November 2004 December 2004 January 2005 February 2005 March 2005 April 2005 May 2005 June 2005 July 2005 August 2005 September 2005 October 2005 November 2005 December 2005 January 2006 February 2006 March 2006 April 2006 May 2006 June 2006 July 2006 August 2006 September 2006 October 2006 November 2006 December 2006 January 2007 February 2007 March 2007 April 2007 May 2007 June 2007 July 2007 August 2007 September 2007 October 2007 November 2007 December 2007 January 2008 February 2008 March 2008 April 2008 May 2008 June 2008 July 2008 August 2008 September 2008 October 2008 November 2008 December 2008 January 2009 February 2009 March 2009 April 2009 May 2009 June 2009 July 2009 August 2009 September 2009 October 2009 November 2009 January 2010 RSS Feed Alternative feed Contact Tevita Something new: Agrobiodiversity Weblog: For discussions of conservation and sustainable use of the genetic resources of crops, livestock and their wild relatives. 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