Genetic Diversity and Species Identification of Cultivar Species in Subtribe Cucumerinae (Cucurbitaceae) Using RAPD and SCAR Markers


DNA polymorphism in the cultivar species; Cucumis sativus L., C. melo L. and Benincasa hispida Cogn. of subtribe Cucumerinae (Cucurbitaceae) in the four northeastern provinces of Thailand was examined by using RAPD technique. Twenty 10-mer primers were produced 212 RAPD fragments, ranging from approximately 120 to 2531 bp. The genetic similarities were estimated from banding profiles using a NTSYS* version 2.1 as a basis for dendrogram construction via the UPGMA method. Cluster analysis divided the taxa under study into 2 clades. Moreover, a RAPD marker: Cm (OPJ11700) was specified to C. melo, and this marker was converted into sequence characterized amplified region (SCAR) marker: Cm (SCJ11516). A pair of sequence-specific primer of clones Cm (OPJ11700) amplified a distinct single band of the same size as the RAPD clones. The SCAR marker was developed successfully to identify C. melo genotype.

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J. Saengprajak and P. Saensouk, "Genetic Diversity and Species Identification of Cultivar Species in Subtribe Cucumerinae (Cucurbitaceae) Using RAPD and SCAR Markers," American Journal of Plant Sciences, Vol. 3 No. 8, 2012, pp. 1092-1097. doi: 10.4236/ajps.2012.38131.

Conflicts of Interest

The authors declare no conflicts of interest.


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