| 徐凤，杨德亮，杨杰，刘秀，张闯，吴明根*.地黄对百草枯解毒机理的研究[J].植物保护,2014,40(1):134-136. |
| 地黄对百草枯解毒机理的研究 |
| Detoxication mechanism of Rehmannia glutinosa to paraquat |
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| DOI： |
| 中文关键词: 地黄 百草枯 抗氧化 |
| 英文关键词:Rehmannia glutinosa paraquat antioxidant |
| 基金项目: |
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| 中文摘要: |
| 地黄对百草枯表现出较强的耐药性，百草枯分别处理300 g/hm2或600 g/hm2时，药害等级分别为0级和2级，且药害症状恢复较快。研究结果表明，地黄块根、叶片乙醇提取物的DPPH自由基清除率随着提取物浓度的增加而增高；叶片对DPPH自由基的清除效果好于块根，DPPH自由基清除率为50%时所需的地黄块根、叶片乙醇提取物浓度分别为20.0 g/L和12.2 g/L。可以推测，地黄对百草枯的解毒是因为体内含有抗氧化活性物质，这种物质遇到百草枯时能够解除百草枯活性氧毒性，起到地黄对百草枯的解毒作用。 |
| 英文摘要: |
| Rehmannia glutinosa showed tolerance to paraquat. The phytotoxicity of R.glutinosa was grade 0 and grade 2 with paraquat at 300 g/hm2 or 600 g/hm2, respectively. The results showed that the DPPH free radical scavenging activity of ethanol extract from R.glutinosa root tubers and leaves increased with the extractive concentration adding; the DPPH scavenging effect in the leaves was better than that in the root tubers. The concentrations of R.glutinosa root tubers and leaves extracted with ethanol were 20.0 g/L and 12.2 g/L, respectively, when the DPPH free radical scavenging activity was 50%. In general, the detoxication of R.glutinosa to paraquat was caused by the antioxidant substance which could remove paraquat reactive oxygen toxicity. |
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