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PCR amplification results of the ITS2 regions of L. japonica and its related species. M: marker; 1 and 26: negative control (CK); 2–25: L. japonica; 27–31: L. macranthoides; 32–36: L. fulvotomentosa; 37-38: L. hypoglauca; 39-40: L. confuse; 41–45: L. similis; 46-47: L. acuminate.
