Random amplified polymorphic DNA (RAPD) analysis reveals genetic relationships among the annual Cicer species

Abstract

 Random amplified polymorphic DNA markers were used to distinguish between nine different Cicer taxa representing the cultivated chickpea and eight other related annual wild species. Of the 75 random10-mer primers tested, only 8 amplified genomic DNA across all the species. A total of 115 reproducibly scorable RAPD markers were generated, all except 1 polymorphic, and these were utilized to deduce genetic relationships among the annual Cicer species. Four distinct clusters were observed and represented C. arietinum, C. reticulatum and C. echinospermum in first cluster followed by C. chorassanicum and C. yamashitae in the second cluster, while C. pinnatifidum, C. judaicum and C. bijugum formed the third cluster. Cicer cuneatum did not cluster with any of the species and was most distantly placed from the cultivated species. Except for the placement of C. chorassanicum and C. yamashitae, deduced species’ relationships agreed with previous studies. In addition, species-diagnostic amplification products specific to all the nine species were identified. The results clearly demonstrate a methodology based on random-primed DNA amplification that can be used for studying Cicer phylogeny and chickpea improvement.