Hawm Gra Dang Ngah rice is a native rice variety planted in Narathiwat Province for a long time. The highlight of this rice is Ylang ylang fragrance and it also has a high nutritional value. The rice is sensitive to light. Rice is not blooming simultaneously crack high stems. The concept of breeding Hawm Gra Dang Ngah rice is not sensitive to light by molecular markers to select the non-sensitivity light phenotype. This experiment was designed to investigate the relationship between molecular markers linked to Hd1 non-sensitivity light gene in F1 generation of the hybrid strain between Hawm Gra Dang Ngah and. RD55 variety. The results showed that the molecular markers exhibited different DNA strands between Hawm Gra Dang Ngah and RD 55. RM19776 was selected as a photoperiod insensitivity of rice as a marker of SSR Marker, a latent gene affixed to the non-Hd1 gene, showing different DNA bands between cultivars of Hawm Gra Dang Ngah and RD55. Therefore, the use of molecular markers related to photoperiod insensitivity Hd1 genes can be used to develop Hawm Gra Dang Ngah rice strains that are not sensitive to light.