OBJECTIVE  To analyze the yield, differential chemical components and their contents of Peucedani Radix under different planting patterns and harvesting periods, and provide the basis for the yield and quality evaluation of Peucedani Radix.

METHODS  Peucedani Radix was sampled by Five-point sampling method. Ultra-high performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry(UPLC-Q-TOF/MS) combined with cluster analysis and principal component analysis, multivariate statistical anysis was used to analyze the yield and differential chemical components of Peucedani Radix in different planting patterns and harvesting periods. On this basis, the content of differential chemical components of Peucedani Radix was tested by ultra-high performance liquid chromatography.

RESULTS  Praeruptorin A, praeruptorin B and praeruptorin E were the key components to evaluate the quality of Peucedani Radix. The quality of alpine imitation wild planting mode was the best, but the yield was lowest. Compared to other planting modes, the yield of the non simulated wild mode that had already planted Peucedani Radix was higher, but the content was lower.

CONCLUSION  Different planting modes have significantly different effects on the yield and quality of Peucedani Radix. Harvest time is not the key influencing factor. This study has accumulated basic data for Peucedani Radix.