| 纳米TiO2对油菜种子发芽与幼苗生长的影响 |
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| 引用本文： | 苏爱华,林匡飞,张卫,徐圣友,杨莎莎,张梅,章立勇.纳米TiO2对油菜种子发芽与幼苗生长的影响[J].农业环境科学学报,2009,28(2). |
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| 作者姓名： | 苏爱华 林匡飞 张卫 徐圣友 杨莎莎 张梅 章立勇 |
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| 作者单位： | 华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室,上海,200237 |
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| 基金项目： | 上海市科委纳米专项基金，上海市环境工程重点学科项目 |
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| 摘 要： | 通过纸床培养,研究在不同浸种时间下,不同浓度的10 nmTiO2悬浮液对油菜种子发芽及幼苗生长的影响.结果表明:浸泡时间为2 h的各指标表现最显著,最适合作为纳米TiO2对油菜种子发芽和幼苗生长影响的浸种时间.浸种2 h纳米TiO2的发芽势、发芽率、发芽指数抑制率与纳米TiO2浓度呈显著正相关,与浓度的对数作线性回归得出,IC20分别为1907、619.0、1039mg·L-1;总长、芽长、根长、总重、芽重、根重的激活率与纳米TiO2的浓度呈显著正相关,通过线性回归方程得出总长、芽长、根长、总重、根重的EC20分别为99.77、404.5、55.46、6918、2 187 mg·L-1.对各指标影响的敏感性大小为:发芽率>发芽指数>发芽势,根长>芽长.因此,油菜发芽率与根长可以作为评价纳米TiO2生态毒性效应的较敏感指标.
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| 关 键 词： | 纳米TiO2 油菜 种子发芽 幼苗生长 |
Effect of Nano-TiO_2 on the Germination and Growth of Rape Seed |
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| SU Ai-hua,LIN Kuang-fei,ZHANG Wei,XU Sheng-you,YANG Sha-sha,ZHANG Mei,ZHANG Li-yong.Effect of Nano-TiO_2 on the Germination and Growth of Rape Seed[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2009,28(2). |
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| Authors: | SU Ai-hua LIN Kuang-fei ZHANG Wei XU Sheng-you YANG Sha-sha ZHANG Mei ZHANG Li-yong |
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| Institution: | State Environmental Protection Key Laboratory of Environmental Risk Assessment and Management on Chemical Process;East China Uni-versity of Science and Technology;Shanghai 200237;China |
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| Abstract: | The impact of various concentration of nano-TiO2 suspension at different soaking time on the germination and growth of rape seed was investigated.The results showed that 2 hours of soaking time was significantly suitable for these assessments.There were positive corre-lations between the logarithm of the concentrations of nano-TiO2 suspension and the inhibitory rate of seed germination,and the IC20 obtained from the regression equations were 1 907 mg.L-1(germinability),619.0 mg.L-1(germination rate),and 1 0... |
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| Keywords: | nano-TiO2 rape seed germination seedling growth |
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