Zhang Ya-Jing, Wang Tao, Guo Qiao-Sheng, Dong Xiao-Ning, Qin Mei-Jing, Xiao Nai-Wen, Han Zheng-Zhou, Wei Min
Institute of Chinese Medicinal Materials,Nanjing Agricultural University Nanjing 210095,China.
Sanjiu Medical & Pharmaceutical Co.,Ltd. Shenzhen 518110,China.
Zhongguo Zhong Yao Za Zhi. 2019 Feb;44(4):641-647. doi: 10.19540/j.cnki.cjcmm.2019.0013.
The Cd stress of Chrysanthemum indicum was treated by different concentrations of Cd Cl2 solution in the culture substrate. The content of Cd in different parts of Ch. indicum and the content of buddleoside and the total flavonoids in Ch. indicum were determined. The absorption characteristics of Cd elements in Ch. indicum were analyzed. And the influence of Cd elements on the quality of the herbs. The results showed that the application of soil Cd in the range of 0-100 mg·kg~(-1) had no significant effect on the biomass of Ch. indicum,and the root-shoot ratio showed a decreasing-increasing-decreasing trend. The content of Cd in different parts of Ch. indicum was significantly different,and the content of aboveground part was higher than that of underground part. The enrichment factors of Cd elements in different parts of Ch. indicum are different. The enrichment coefficient of aboveground parts is larger than that of underground parts. The whole parts and plants show an increase first and then decrease,and the overall enrichment factor is greater than1. The transfer coefficient of the aerial part/underground part of Ch. indicum showed a decreasing-increasing-decreasing-increasing trend with the increase of the amount of Cd applied in the soil,and the transfer coefficient was higher than 1. The contents of buddleoside and total flavonoids in Ch. indicum after Cd stress treatment were lower than the control,and the overall performance was lower and then increased,but it was still significantly lower than the control,indicating that Cd pollution directly led to the decrease of chemical quality of Ch. indicum.
通过在栽培基质中施加不同浓度的CdCl₂溶液来处理菊花的镉胁迫。测定了菊花不同部位的镉含量以及菊花中蒙花苷和总黄酮的含量。分析了菊花对镉元素的吸收特性。以及镉元素对药材品质的影响。结果表明，土壤镉施用量在0-100mg·kg⁻¹范围内对菊花生物量无显著影响，根冠比呈下降-上升-下降趋势。菊花不同部位的镉含量差异显著，地上部分含量高于地下部分。菊花不同部位镉元素的富集系数不同，地上部分的富集系数大于地下部分。全株呈现先增加后降低的趋势，整体富集系数大于1。菊花地上部分/地下部分的转运系数随着土壤镉施用量的增加呈下降-上升-下降-上升趋势，且转运系数高于1。镉胁迫处理后菊花中蒙花苷和总黄酮的含量低于对照，总体表现为先降低后升高，但仍显著低于对照，表明镉污染直接导致了菊花化学品质的下降。
