Flowering time is an important adoptive variable in plant breeding that will lead to faster seed development initiation. Seed dormancy is defined as the temporary failure or delay of a viable seed to germinate, after a specific period, in a particular set of environmental conditions that allow germination after the restrictive state has been terminated by either natural or artificial conditions. Still no evidence has been known related to correlation between flowering time and dormancy. In this research we tried to find correlation between flowering time and seed dormancy quantitative treat loci (QTL) located on chromosome 6 in rice. Three putative quantitative loci designed on chromosome 6 of rice. The locus qSD6-1 was first detected in a BC₁F₁ population, and advanced to a BC₄F₂ population. Also, qSD6-2 and qSD6-3 were detected in a second mapping in a BC₁F₂ population. Seed samples harvested from single plants that were heterozygous for the three QTLs used as starting material to estimate correlation between flowering time and 3 putative QTLs located on chromosome 6. Nine populations (3 heterozygous populations per loci) developed and planted in the field while each was containing ~ 100 individuals. Flowering started after two and half months and recorded every day. All of the populations flowered but the only populations that could produce seed were conveying qSD6-3 loci.