Increasing concentrations of atmospheric CO 2 are currently causing global concern because of their propensity to change our climate (Smith et al., 2016). Soils contain approximately 1500 Gt of organic carbon to a depth of 1 m globally and represent the largest terrestrial pool of organic carbon (Batjes, 1996;Jobbágy & Jackson, 2000). Cultivation and management of agricultural soils and the associated liberation of organic carbon as CO 2 have been cited as major factors contributing to this atmospheric CO 2 increase (Lal, 2018). Recent policy initiatives (e.g.

RAPD is one of the DNA markers that utilize the principle of Polymerase Chain Reaction (PCR) machine which can amplify specific DNA sequences in vitro. The primary selection is made to display the DNA band pattern which can be used to obtain polymorphism information. This study aims to determine the RAPD-PCR primer that can be used to differentiate accession of cinnamon bark in Jambi Province, Indonesia. RAPD-PCR primer selection was carried out by using 100 primers which produces a polymorphic DNA band. Ten primers were identified to produce polymorphic DNA bands for cinnamon bark DNA namely: OPE-6, OPE-20, OPH-7, OPH-14, OPH-19, OPM-2, OPM-5, OPM-6, OPM-16 and OPM-19.

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