【Objective】The study cloned 18 SrRNA gene of Cucurbita moschata and designed suitable qRT-PCR primers for analyzing expression patterns and regulation mechanisms of important critical genes.【Method】Sequence of 18 SrRNA gene was cloned by PCR using the genomic DNA of Cucurbitamoschata cultivar‘Miben'as template.A pair of qRT-PCR primers were then designed by Primer Premier software.Furthermore,the stability of 18 SrRNA gene was determined in Cucurbita moschata in different tissues,growth stages and abiotic s...