道地药材牛蒡子特性与生态因子的关系

选取30个野生牛蒡生长地,采集种子和土壤,并收集当地的气候、土壤、地形等资料,运用相关分析和逐步回归分析方法,系统分析气候、土壤、地形等生态因子对牛蒡子品质(千粒重、粒数百分比、重量百分比)、有效成分(牛蒡苷、苷元、苷和苷元总量)等的影响,并分别筛选出各个指标的关键影响因子.结果表明:1月多年平均最低气温是影响千粒重的关键因子,两者呈显著负相关(P＜0.05);土壤中Zn含量是影响牛蒡苷元含量的关键因子,两者呈极显著正相关(P＜0.01),同时土壤中Zn含量也是影响重量百分比和粒数百分比的关键因子,却与其呈显著负相关(P＜0.05);而其他生态因子与牛蒡特性的相关性不显著,这可能与其是广布种适应性强有关.

The Relationship between Characteristics of Arctium lappa L. and Ecological Factors

30 locations on which wildness Arctium lappa L.grows were selected to collect seed of Arctium lappa L.and soil,meanwhile the data of local climate,soil and landform were also collected.The impacts of ecological factors (climate,soil and landform,etc.)on quality of Arctium lappa L.(the weight of thousand seeds,the number percentage of full seed and the weight percentage of full seed) and effective components (arctinin,arctigenin,total amount of arctinin and arctigenin) were systematic analyzed by methods of correlation analysis and regression analysis,and the key factors of each index were selected separately.The results showed that the average minimum temperature in January was the key factor to affect the weight of thousand seeds,and there was a significant negative correlation between them (P＜0.05);the content of Zn in soil was the key factor to affect the content of arctigenin,and there was a significant positive correlation between them (P＜0.01),while the content of Zn in soil also was the key factor to affect the number percentage and the weight percentage of full seeds,but there was a significant negative correlation between them (P＜0.05);there were no significant relationships between others ecological factors and the characteristics of Arctium lappa L.,it probably because Arctium lappa L.is awidespread species.