Biochemical Genetics

, Volume 48, Issue 1–2, pp 83–95 | Cite as

Genetic Relationships Within and Between Capsicum Species

  • Ayşe Gul Ince
  • Mehmet Karaca
  • A. Naci Onus


Genetic relationships were estimated among 24 accessions belonging to 11 species of Capsicum, using 2,760 RAPD markers based on touch-down polymerase chain reactions (Td-RAPD-PCR). These markers were implemented in analyses of principal coordinates, unweighted pair group mean average, and 2,000 bootstrap replications. The accessions were divided into four groups, corresponding to previously described Capsicum complexes: C. annuum complex (CA), C. baccatum complex (CB), C. pubescens complex (CP), and C. chacoense accessions (CA/B). Their overall mean genetic similarity index was 0.487 ± 0.082, ranging from 0.88 to 0.32, based on Jaccard’s coefficient. The highest genetic variation was observed among the accessions in CP; the accessions in CB had a low level of variation as judged from the standard deviations of the genetic similarity indices. Based on the Td-RAPD-PCR markers, the 24 accessions were divided into four major groups, three of which corresponded to the three distinct Capsicum complexes. Accessions of C. chacoense were found to be equally related to complexes CA, CB, and CP.


RAPD-PCR DNA markers Species relationships Capsicum complex Touch-down PCR 



This work was supported in part by the Scientific and Technological Research Council and the Scientific Research Projects Coordination Unit of Akdeniz University.


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Field Crops, Faculty of AgricultureAkdeniz UniversityAntalyaTurkey

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