Sesame inflorescence finite basis is because of Sidt1 and its SNP marker

The invention belongs to molecular genetic breeding technical fields, and in particular to a kind of sesame inflorescence finite basis because Sidt 1 and its SNP marker Si Dt27‑1.Sesame inflorescence finite basis because Sidt 1 has 1809bp, and comprising 4 extrons and 3 intrones, on the 4th article of chromosome of sesame, the position in sesame SNP genetic maps is the 8th linkage group, and 18.0 19.2cM, to inflorescence, the explanation rate of limited character is 100%（Vg/Vp）；Its DNA sequence dna is as shown in SEQ ID NO.1.SNP marker Si Dt27 1 has 92bp, be inflorescence finite basis because Sidt 378th to 469 place's base sequence in 1.The present invention provides hereditary information for crops flower development mechanism such as analysis sesames；Important molecular markers are provided to establish sesame marker assisted selection technology, the Sesame Cultivar limited for screening inflorescence provides rapid detection method.