Legume Research
Chief EditorJ. S. Sandhu
Print ISSN 0250-5371
Online ISSN 0976-0571
NAAS Rating 6.80
SJR 0.391
Impact Factor 0.8 (2024)
Chief EditorJ. S. Sandhu
Print ISSN 0250-5371
Online ISSN 0976-0571
NAAS Rating 6.80
SJR 0.391
Impact Factor 0.8 (2024)
Discerning genetic diversity among super early pigeonpea germplasm using microsatellite markers
Submitted17-04-2015|
Accepted24-07-2015|
First Online 03-03-2016|
In the present study genetic diversity studies have been carried out using twenty four polymorphic SSR markers in a set of thirty five super early pigeonpea germplasm. The primers amplified a total of 69 alleles with 24 primers having highest PIC of 0.74. The SSR markers grouped the germplasm into four clusters based on jaccard’s similarity coefficient. To test the goodness of fit of a clustering to a set of SSR data, cophenetic correlation coefficient or cophenetic value was estimated using the COPH and MXCOMP options in NTSYS-pc program. The cophenetic value of 0.94 obtained using the SSR data indicated a very good fit. The polymorphic SSR primers could clearly distinguish the determinate germplasm and non-determinate germplasm. PCA revealed that phenotypic variation explained by the SSRs with first four PCs accounted to 65.4% of total variation. Analysis of molecular variance of pigeonpea germplasm has shown that approximately 1.2% of genetic diversity was within super early germplasm, 71% among germplasm, and 27% among determinate and indeterminate types.
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.