人工合成麝香对小麦种子发芽的生态毒性

采用土培实验,研究了佳乐麝香(HHCB)和吐纳麝香(AHTN)对小麦种子发芽的生态毒性,测定了这2种人工合成麝香对小麦种子发芽率、根伸长抑制率和芽伸长抑制率的影响.结果表明,小麦种子的发芽率与这2种人工合成麝香浓度之间剂量-效应关系不明显,低剂量条件下(佳乐麝香≤150 mg·kg-1,吐纳麝香≤200 mg·kg-1...

Ecotoxicity of Synthetical Musks on Wheat (Triticum aestivum) Based on Seed Germination

With soil culture the ecotoxicological effects of galaxolide (HHCB) and tonalide (AHTN) on the germination of wheat (Triticum aestivum) seeds were investigated. And the influence of these two synthetical musks on the wheat germination rate, inhibition rate of root elongation and inhibition rate of shoot elongation were studied. The results showed that there were no obvious dose-effect relationship between wheat germination rate and concentrations of these two synthetical musks. Lower dose (HHCB < or = 150 mg x kg(-1), AHTN < or = 200 mg x kg(-1)) could accelerate the germination of wheat. Under the test concentrations of synthetical musks, the wheat germination rates treated with HHCB and AHTN were 77.78%-95.56% and 84.44%-97.78%, respectively. There were good dose-effect relationship between inhibition rate of root elongation (or inhibition rate of shoot elongation) and synthetical musks concentrations. The EC50 of HHCB and AHTN based on shoot were 155.84 mg x kg(-1) and 290.58 mg x kg(-1), and were 215.66 mg x kg(-1) and 323.10 mg x kg(-1) based on root from linear model. The EC50 of wheat sensitive positions showed that the toxicity of HHCB was stronger than AHTN.