| 小白菜和空心菜对不同形态碘的吸收 |
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| 引用本文： | 谢伶莉,翁焕新,洪春来,严爱兰. 小白菜和空心菜对不同形态碘的吸收[J]. 植物营养与肥料学报, 2007, 13(1): 123-128. DOI: 10.11674/zwyf.2007.0121 |
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| 作者姓名： | 谢伶莉 翁焕新 洪春来 严爱兰 |
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| 作者单位： | 1.浙江大学环境与生物地球化学研究所 浙江杭州310027 |
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| 摘 要： | 通过营养液培养试验研究了小白菜和空心菜对不同形态碘(I-、IO3-和CH2ICOO-)的吸收特征。研究结果表明,低水平的外源碘能促进小白菜和空心菜的生长;在0～1.0.mg/L(以I计算)的碘水平范围内,小白菜和空心菜对碘的吸收量随外源碘水平的提高而增加;对不同形态碘吸收量大小顺序为:CH2ICOO-I-IO3-。小白菜和空心菜根部和地上部分中碘的含量之间呈显著相关性,其中小白菜根部和地上部分中碘的含量比约为2∶1;空心菜根部和地上部分碘的含量比约为1∶1,反映了不同蔬菜对碘吸收的差异性。
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| 关 键 词： | 小白菜 空心菜 I- IO3- CH2ICOO- 吸收 |
| 文章编号： | 1008-505X（2007）01-0123-06 |
| 收稿时间： | 2005-11-03 |
| 修稿时间： | 2006-01-04 |
Uptake of bok-choy and Ipomoea aquatica Forsk to iodine species |
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| XIE Ling-li,WENG Huan-xin,HONG Chun-lai,YAN Ai-lan. Uptake of bok-choy and Ipomoea aquatica Forsk to iodine species[J]. Plant Nutrition and Fertilizer Science, 2007, 13(1): 123-128. DOI: 10.11674/zwyf.2007.0121 |
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| Authors: | XIE Ling-li WENG Huan-xin HONG Chun-lai YAN Ai-lan |
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| Affiliation: | 1.Institute of Environment & Biogeochemistry;Zhejiang University;Hangzhou 310027;China |
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| Abstract: | A hydroponic experiment was carried out to investigate the influence of iodine species: iodide(I-),iodate(IO3-) and iodoacetic acid(CH2ICOO-) on iodine uptake by leafy vegetables(Bok-choy and Ipomoea aquatica Forsk). The results show that low level of iodine can efficiently promote the biomass of Bok-choy and Ipomoea aquatica Forsk.When iodine level in the nutrient solution from 0 to 1.0 mg/L,the iodic quantities uptaked by bok-choy and Ipomoea aquatica Forsk are enhanced with the iodine levels in nutrient solution increase.The rank of iodine species by Bok-choy and Ipomoea aquatica Forsk is CH2ICOO->I->IO3-.There is a significant correlativity between the I contents in shoots and roots of bok-choy and Ipomoea aquatica Forsk.The ratios of I contents in roots to in shoots of bok-choy and Ipomoea aquatica Forsk are roughly 2∶1 and 1∶1,respectively,which indicates the differences in iodine uptaked by plants. |
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| Keywords: | I- IO3- CH2ICOO- |
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