CAPS molecular marker for identifying sorghum leaf sheath color, primer and application

The invention discloses a CAPS molecular marker for identifying the color of a sorghum leaf sheath, a primer and application, and belongs to the field of plant genetic engineering. The sequence of the CAPS molecular marker is as shown in SEQ ID NO.3, and T/C mutation exists at the 125bp position of the sequence. A primer pair for amplifying the CAPS molecular marker comprises upstream and downstream primers of which the nucleotide sequences are as shown in SEQ ID NO.1-2. The CAPS molecular marker disclosed by the invention can be used for effectively identifying sorghum varieties with purple and green leaf sheaths. The sorghum leaf sheath color is identified on the basis of the developed molecular marker, the method has the advantages of being easy and convenient to operate, low in cost, short in detection period, stable in marker, environmentally friendly and the like, and molecular marker-assisted selective breeding of sorghum and cultivation of new sorghum germplasm resources are facilitated. 本发明公开了一种用于鉴定高