Research Article
Endangered Uyghur Medicinal Plant Ferula Identification through the Second Internal Transcribed Spacer
Table 1
ITS2 sequence characteristics and K2P distances of Ferula used in this research.
| Species | Sample number | GC content (%) | Sequence length (bp) | Distinctive variable site | Interspecific K2P distance (mean) |
| F. sinkiangensis | 13 | 55.0 | 451 | 7 | 0.009–0.163 (0.030) | F. fukanensis | 6 | 54.7 | 455 | 0 | 0.002–0.161 (0.027) | F. ferulaeoides | 14 | 54.6 | 454 | 0 | 0.002–0.150 (0.023) | F. soongarica | 6 | 54.4 | 454 | 1 | 0.002–0.154 (0.025) | F. caspica | 11 | 54.3 | 455 | 3 | 0.009–0.161 (0.030) | F. lehmannii | 5 | 54.9 | 455 | 0 | 0.002–0.157 (0.028) | F. syreitschikowi | 10 | 54.3 | 455 | 3 | 0.007–0.145 (0.028) | F. akitschkensis | 4 | 56.2 | 452 | 53 | 0.145–0.170 (0.156) | F. dubjanskyi | 3 | 53.6 | 455 | 5 | 0.016–0.151 (0.035) | F. litwinowiana | 2 | 54.9 | 455 | 4 | 0.007–0.170 (0.033) |
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