叢枝菌根菌對種植於鹽化土壤中非洲鳳仙生長及累積鎘濃度的影響

Inoculation of Arbuscular Mycorrhizal Fungi on the Growth and Cadmium Accumulation of Impatiens (Impatiens walleriana) Grown in Saline Soils

林俊銘(Chun-Ming Lam) ； 賴鴻裕(Hung-Yu Lai)

《土壤與環境》 19卷1&2期 (2016/12) Pp. 1-11

摘要

非洲鳳仙(Impatiens walleriana)可以累積高濃度的鎘，且也被證實具有植生復育的潛力，但是高的鎘處理濃度卻會影響其生長表現。叢枝菌根菌已被證實可以提升植物的生長表現，並使植物可以累積更多的重金屬，本研究將非洲鳳仙扦插苗種植在混有高比例菌根菌的鎘污染土壤中，以了解叢枝菌根菌對於種植於鹽化土壤中非洲鳳仙生長及累積鎘之影響。試驗結果顯示，叢枝菌根菌會促進非洲鳳仙的根系發育，但鹽化土壤的高導電度卻會影響非洲鳳仙的生長表現，對多數處理而言，接種菌根菌非洲鳳仙累積的鎘濃度或總移除量均比未接種的低，其原因推測與土壤的高導電度有關。

關鍵字

叢枝菌根菌 ； 重金屬 ； 超級累積植物 ； 植生復育

並列摘要

Impatiens (Impatiens walleriana) can accumulate high concentration of cadmium (Cd) and was evidenced as a potential Cd hyperaccumulator. Nevertheless, high concentration of Cd had negative influence on the growth. Results of previous studies revealed that the inoculation of arbuscular mycorrhizal fungi (AMF) can promote the growth and accumulation of heavy metal of plants. In this study, cuttings of impatiens were planted in the Cd-contaminated soils inoculated with high proportion of AMF to assess AMF's function. Experiment result showed that the electrical conductivity of AMF amended soil affected the growth of impatiens. For most of the treatments and possible resulted from the high electrical conductivity of saline soils, the concentration and total removal of Cd in the AMF inoculated impatiens were lower than non-inoculated treatments regardless of organs.

並列關鍵字

arbuscular mycorrhizal fungi ； heavy metal ； hyperaccumulator ； phytoremediation