| UV-B辐射增强与1,2,4-三氯苯污染复合胁迫对青菜生长的影响 |
| 摘要点击 3588 全文点击 1961 投稿时间：2013-07-08 修订日期：2013-10-29 |
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| 中文关键词 UV-B辐射 1,2,4-三氯苯 复合作用 青菜 生长 |
| 英文关键词 UV-B radiation 1,2,4-trichlorobenzene combined effect green vegetable growth |
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| 中文摘要 |
| 采用盆栽实验，分析了单一UV-B辐射增强或1，2，4-三氯苯（TCB）污染土壤与两种胁迫复合作用对青菜生长发育、气孔阻力及叶片结构的影响. 结果表明，单一1，2，4-TCB污染对青菜生长发育的抑制作用大于两种胁迫复合作用. UV-B辐射增强和1，2，4-TCB污染均显著增加青菜叶片正面和反面气孔阻力. UV-B辐射增强使青菜叶片产生白化现象. 1，2，4-TCB污染使叶片颜色变淡，并使青菜叶片表面出现黑斑症状，且UV-B辐射增强使黑斑症状加剧. 总之，单一增强UV-B辐射或1，2，4-TCB污染及其复合作用对青菜各生长发育指标的影响结果不同. |
| 英文摘要 |
| A pot experiment was conducted to study the effects of UV-B radiation enhancement alone, 1,2,4-trichlorobenzene (TCB) contamination soil alone, and the combined stress on the growing process, stomatal resistance and leaf structure of green vegetable. The results showed that 1,2,4-TCB contamination alone had more significant inhibitory effect on the growth of green vegetable than the combined stress. Both UV-B radiation enhancement and 1,2,4-TCB contamination reduced the stomatal resistance of front and reverse leaves. Enhanced UV-B radiation resulted in the albino of leaves. 1,2,4-TCB contamination resulted in the fading of leaf color and the appearing of black spots on leaf surfaces, and the enhanced UV-B radiation strengthened the black-spot symptom. In conclusion, the effects of UV-B radiation enhancement alone, 1,2,4-trichlorobenzene (TCB) contamination soil alone and the combined stress on the growth indicators of green vegetable were different. |
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