Study On The Relationship Between The Quality Of Glehnia Littoralis Fr. Schmidt Ex Miq And Ecological Factors In Different Production Areas Of China

Glehnia littoralis Fr.Schmidt ex Miq.?G.littoralis?is herbal drug to treat lung diseases.Inner Mongolia,Shandong and Hebei Province are the main production areas of G.littoralis.However,the quality of traditional Chinese medicine is influenced by genetic and environmental factors.Therefore,this study compared the extracts and polysaccharide contents of G.littoralis in three main producing areas,which combined with the local annual average temperature and annual precipitation for 30 years,to explore the correlation between the quality of G.littoralis and climatic factors;and planted the seeds of G.littoralis from two origins in four regions at the same times in order to explore the correlation between the components of G.littoralis and ecological factors.And we preliminarily discussed the effect of phosphorus and potassium fertilizer or organic fertilizer on yield and quality of G.littoralis.The results are as follows:1.Through the correlation analysis between the extracts?polysaccharide contents about fifteen samples of G.littoralis and climatic factors,we can see that the water soluble extract and polysaccharide contents of G.littoralis were negatively correlated with annual average temperature and relative humidity,and positively correlated with sunshine hours.The water soluble extract contents of G.littoralis from Laiyang city of Shandong province and Kalaqin banner of Inner Mongolia were higher than that of other samples;the content of alcohol soluble extract in G.littoralis from Anguo city of Hebei province reached 11.4%,which was significantly higher than other samples;the polysaccharide content of samples from Inner Mongolia?Hebei and Shandong province ranged from 69.8%to 82.9%,varied between 42.3%and 71.7%,went from 57.9%to 73.8%,respectively.2.The biomass and quality of G.littoralis in four planting areas were studied.Results are as follows:the root diameter and dry weight of G.littoralis in Horinger County of Inner Mongolia were best.The content of water soluble extract in G.littoralis from Minle County of Gansu province was significantly higher than that of other samples?76.4%?;the content of alcohol soluble extracts in G.littoralis from Alashan Zuoqi of Inner Mongolia was the lowest?7.8%?;the polysaccharide content in eight samples ranged from 64.4%to 74.3%.The results of correlation between the extracts?polysaccharide contents of G.littoralis in four growing areas and edaphic factors showed that:the contents of water soluble extract and polysaccharide of G.littoralis were negatively correlated with soil pH,and positively correlated with soil organic carbon,available phosphorus and potassium.The contents of alcohol soluble extract were negatively correlated with available potassium?total potassium and soil pH,and positively correlated with other nutrient indexes.3.In the fertilization experiment,whether applying phosphorus and potassium fertilizer or organic fertilizer,fertilization is beneficial to the growth of G.littoralis.When chose the concentration of organic fertilizer at 111 kg·hm^-2,the plant height and the growth of main roots of G.littoralis were significantly promoted;the polysaccharide content of G.littoralis reached 84.5%,which was higher significantly than other treatments.When compared with the control,the yield of plots increased by 1.2 times.4.The processing method has a significant effect on the content of G.littoralis'ingredients.The contents of water and alcohol soluble extracts in G.littoralis with cortex were significantly higher than that of G.littoralis without cortex,the results of polysaccharide content were reversed.