摘要
以白背三七茎叶为研究对象,分别对陕西省12个引种试验地种植的白背三七总黄酮和B族维生素含量进行了测定和相关性分析,并采用中国气象科学数据共享服务平台获得不同产地的生态因子数据,通过冗余分析(RDA)其化学成分含量与生态因子间的相关性。结果显示:(1)不同采样地白背三七的总黄酮含量和B族维生素各成分含量有明显差异,其中洛南4个样地种植的白背三七茎叶中总黄酮含量显著高于其他8个样地,但B族维生素含量较其他8个样地的低;白背三七茎叶中总黄酮含量与B2、B6、B12及B族维生素总量之间具有显著或极显著负相关关系。(2)种植地的海拔、降雨量和温度对白背三七黄酮类物质累积具有重要作用,其中总黄酮含量的主要影响因子是海拔和降雨量,且均呈正相关关系;降雨量和海拔对白背三七中B族维生素含量的影响均呈负相关关系。研究表明,地理位置和环境因子对白背三七活性物质含量具有重要影响,以洛南为代表的秦巴山区(海拔800～900m,7～8月平均降雨量78～84mm,平均地温26～27.5℃)是栽培白背三七较适宜的生态区。
Gynura divaricata samples were collected from 12 differently experimental fields in Shaanxi Province,and the amount of total flavonoids and B vitamins in stems and leaves were measured.The redundancy analysis（RDA）was conducted to reveal the relationship between active components and differently ecological factors,which were obtained from China Integrated Meteorological Information Service System.The results indicated that：（1）the amount of total flavonoids and B vitamins in G.divaricata from different fields showed significant differences.The total flavonoids in G.divaricatafrom 4 experimental fields in Luonan County were the highest,whereas the amount of B vitamins was the lowest.Besides that,the content of total flavonoids appeared significant negative correlation with the amount of B2,B6,B12 and B-vitamins in stems and leaves of G.divaricata.（2）Geographic position and environmental factors,such as elevation,precipitation and local temperature affected the accumulation of active components in G.divaricata.Interestingly,the total flavonoids could be positively determined by elevation and precipitation,but for B vitamins,it presented negative correlation with these two factors.So,it is conclu-ded that Luonan county in the Qinba Mountain Area（alt：800-900 m;average monthly rainfall in JulAug：78-84 mm;average ground temperature：26-27.5 ℃）was an optimal place for the cultivation of G.divaricatain Shaanxi Province.
作者
任平
王远征
付博
洪波
刘晨
李英梅
REN Ping;WANG Yuanzheng;FU Bo;HONG Bo;LIU Chen;LI Yingmei(Bio Agriculture Institute of Shaanxi,Xi＇an 710043,China;Enzyme Engineering Research Center of Shaanxi,Xi＇an 710600,China;Shaanxi Key Laboratory of Plant Nematology,Xi＇an 710043 China)
出处
《西北植物学报》
CAS
CSCD
北大核心
2018年第9期1727-1732,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
陕西省科学院重点项目(2016k-02)
陕西省科学院"一所一品"产业化项目(2018k-03)
陕西省科技厅重点研发项目(2017ZDXM-NY-008)
关键词
白背三七
黄酮
B族维生素
冗余分析
生态因子
G. divaricata
flavonoid
B vitamins
redundancy analysis
ecological factors
