Table 3. The GC content analysis of composition of ITS sequence of different ploidy populations of S. spontaneum.

	ITS1 GC content (%)		5.8s rDNA GC content (%)		ITS2 GC content (%)
Population	Range	Mean	Range	Mean	Range	Mean
Octaploid	61.8–64.7	63.7	56.1–57.3	57.2	68.5–69.7	69.4
Nonaploid	61.4–64.3	63.1	56.1–57.3	57.1	67.9–69.7	69.1
Decaploid	61.8–64.7	63.4	56.1–57.9	57.1	67.6–69.9	69.1
Dodecaploid	62.3–64.7	63.4	56.7–57.3	57.0	68.3–70.3	69.4
Mean		63.5		57.1		69.3