Abstract:

The ginseng industry is a characteristic pillar health industry in Jilin Province， however， due to the limitation of ginseng crop succession barrierhas made the ginseng industry to face resource depletion. The purpose of this study is to investigate the mechanism of ginseng crop disorder through preliminary investigation of the effect of ginseng crop soils on normal ginseng growth and development. In this study， we systematically analyze the differences in ginseng growth at different growth periods from morphological， physiological and biochemical levels， using observational comparisons and biochemical kit assays， using normal-grown ginseng as control and continuous-crop ginseng as treatment. The plant height， main root length and fibrous root number of the continuous ginseng group （CCO） reach a significant level of difference （P<0.05） compared to the control group （CK） at the harvesting stage. During the fruiting and harvesting periods， catalase （CAT） activity decreases and malondialdehyde （MDA） content increases with significant differences （P<0.05）， while peroxidase （POD） activity and superoxide dismutase （SOD） activity significantly increases （P<0.05） and decreases （P<0.05） during the harvesting period in continuous ginseng. It shows that the inhibition of normal ginseng growth by continuous crop soil is manifested in both oxidative stress and ginseng growth and development， and if the continuous crop problem could be solved by soil improvement， it would effectively solve the bottleneck problem in the field of ginseng cultivation in Jilin Province.

Key words: Ginseng, Soil, Continuous crop disorder, Antioxidant enzymes, Growth and development