Study On The Content Of Geniposidic Acid In Different Parts Of Eucommia Ulmoides On Karst Plateau Of Guizhou Province, China

This study aims to explore the content of (geniposidic acid, GPA) in the leaves, trunk bark and root bark of Eucommia ulmoides on Xingyi karst plateau mountains of Guizhou Province, China. There was no significant difference in the content of GPA in Eucommia ulmoides planted in different directions on the same slope. The content of GPA in leaves, trunk bark and root bark of Eucommia ulmoides planted on the sunny slope varied significantly, where the GPA content in root bark was the highest (32.7851 mg/g), There was no significant difference in GPA content in leaves and root bark of Eucommia ulmoides planted on the shady slope, but the GPA content in trunk bark was significantly different from that in leaves and root bark, where the GPA content in trunk bark was the highest (30.3958 mg/g), There was no significant difference in GPA content in trunk bark and root bark of Eucommia ulmoides planted in different slope directions, and the GPA content in leaves of Eucommia ulmoides planted on shady slope was significantly (36.71%) higher than that on sunny slope. The GPA content in different parts of Eucommia ulmoides on both sunny or shade slope was GAP content in root bark was the largest followed by that in leaves, and that in trunk bark was the lowest. These results expand the source sites and provide new ideas for the comprehensive utilization and further research of Eucommia ulmoides resources.