RAPD primer screening as a preliminary study to analyze the genetic diversity of Citrus spp. In South Sulawesi, Indonesia

Abstract

Abstract The typical citrus germplasm collection in South Sulawesi has not been thoroughly characterized, especially in several citrus development centers, which have begun to be promoted again after the decline in productivity due to CVPD infection. The study of citrus diversity is very important to support future citrus breeding programs. Random amplified polymorphic DNA (RAPD) has been widely used for the analysis of genetic diversity among species in populations. In this study, 23 RAPD primers were used on Citrus cultivated in Selayar and Pangkep Regencies, which are citrus development areas in South Sulawesi. A total of 19 primers (OPA-05, OPA-09, OPA-17, OPC-09, OPC-17, OPE-04, OPH-04, OPH-15, OPN-14, 0PN-16, OPR-08, OPR-20, OPW-06, OPW-09, OPX-07, OPX-11, OPX-17, UBC-18, and UBC-51) can form polymorphic bands in randomly selected DNA samples. Monomorphic bands were formed by OPA-12 and OPD-07 primer in 12 samples. The primers OPX-13 and OPX-16 produced unclear bands. These 19 primers can be used to amplify DNA and determine the genetic diversity of Citrus in further analysis.

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