太子参皂苷含量地理变异及气候响应特征  

Spatial variation in saponin content and climatic response characteristics

作　　者：杨芙蓉 冉家栋 谢彩香[1,2] Yang Fu-Rong;Ran Jia-Dong;Xie Cai-Xiang(Key Lab of Chinese Medicine Resources Conservation,State Administration of Traditional Chinese Medicine of the People’s Republic of China,Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100193,China;Engineering Research Center of Chinese Medicine Resources,Ministry of Education,Beijing 100193,China)

机构地区：[1]中国医学科学院北京协和医学院药用植物研究所,国家中医药管理局中药资源保护重点研究室,北京100193 [2]中药资源教育部工程研究中心,北京100193

出　　处：《植物科学学报》2023年第4期490-501,共12页Plant Science Journal

基　　金：中国医学科学院创新工程项目(2017-I2M-B&R-09)。

摘　　要：运用紫外-可见分光光度法测定4个产区药用植物太子参(Pseudostellaria heterophylla(Miq.)Pax ex Pax et Hoffm.)中的太子参皂苷含量,并分析太子参皂苷含量的地理变异规律,及其与气候因子在不同时间尺度上的响应关系。结果显示,太子参皂苷含量可分为江苏-安徽高含量区和贵州-福建低含量区。太子参皂苷含量与年均日照量呈极显著正相关,与年均相对湿度和年均降水呈负相关;与最热月份最高温呈显著正相关,与最冷季度平均温呈显著负相关。月均日照量和月均温对太子参皂苷含量影响较大,其中1-12月的月均日照量与太子参皂苷含量呈显著正相关;1-4月和11-12月的月均温与太子参皂苷含量呈负相关;5-9月的月均温与太子参皂苷含量呈正相关。产区间日照量差异可能是造成太子参皂苷含量地理变异的主要气候因素,日照量高、季度间温度差异大且相对少雨、低湿的地区有助于太子参皂苷的形成和积累。Ultra-violet-visible spectrophotometry(UV-VIS)was applied to determine saponin content in Pseudostellaria heterophylla in four main producing areas to analyze their spatial variation rules.Pearson correlation was used to analyze the response relationship between multi-scale climatic factors and saponin content.Results showed significant spatial variation in saponin content,with high-content regions in Jiangsu and Anhui provinces and low-content regions in Guizhou and Fujian provinces.Saponin content was strongly positively correlated with annual average solar radiation,while negatively correlated with annual average humidity and annual precipitation.Furthermore,saponin content was positively correlated with maximum temperature of the warmest month,while negatively correlated with mean temperature in the coldest quarter.Monthly mean solar radiation and monthly mean temperature were key factors for saponin content in P.heterophylla.Saponin content was strongly positively correlated with monthly average solar radiation from January to December and positively correlated with monthly mean temperature from May to September,but negatively correlated with monthly mean temperature from January to April and November to December.Results indicated that solar radiation is a vital climate factor for the spatial variation of saponin content.High-solar radiation,high temperature differences,and low precipitation and humidity were conducive to saponin accumulation in P.he-terophylla.

关 键 词：太子参 太子参皂苷含量 地理变异 气候因子 响应特征 

分 类 号：S567.53[农业科学—中草药栽培]