植物学报 >

2017 , Vol. 52 >Issue 2: 167 - 174

DOI: https://doi.org/10.11983/CBB16021

研究报告

草莓对I-、IO3-的吸收特征及对其品质的影响

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  • 1浙江大学环境与生物地球化学研究所, 杭州 310027
    2浙江省农业科学院, 杭州 310021
    3中国地质调查局农业地质应用研究中心, 杭州 311201
# 共同第一作者

收稿日期: 2016-01-29

  录用日期: 2016-05-06

  网络出版日期: 2017-04-05

基金资助

浙江省国土资源厅地质勘查项目(No.2014002)和国家自然科学基金(No.40873058, No.40373043)

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Absorption Characteristics of Strawberry on I-, IO3- and the Effects on the Quality

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  • 1Institute of Environment & Biogeochemistry, Zhejiang University, Hangzhou 310027, China
    2Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3Geological Research Center For Agricultural Applications, China Geological Surver, Hangzhou 311201, China
# Co-first authors

Received date: 2016-01-29

  Accepted date: 2016-05-06

  Online published: 2017-04-05

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摘要

提高植物性食品中碘的含量对人体自然补碘具有重要作用。该文通过水培模拟实验, 揭示了草莓(Fragaria ananassa)对I-和IO3-的吸收特征, 在分析不同外源碘浓度下草莓根系以上部分生物量的基础上, 通过对比吸收外源碘前后维生素C、可溶性糖、总酸度和硝酸盐含量的变化, 评价了草莓吸收I-和IO3-对果实品质的影响。研究结果表明, 草莓对碘的吸收量随营养液中I-和IO3-浓度的增加而增加, 相同浓度下草莓吸收的I-明显多于IO3-, 草莓吸收适量的碘可以促进植株生长, 不仅使生物量提高, 而且会增加草莓果实维生素C和可溶性总糖的含量, 从而提高品质。在营养液浓度为0.5-5.0 mg∙kg-1时, 草莓吸收IO3-后会增加果实总酸度和硝酸盐的含量, 降低草莓果实品质。在营养液浓度为0.25-2.5 mg∙kg-1时, 草莓吸收I-后会使果实中总酸度和硝酸盐的含量明显降低, 果实的品质有所提高。研究结果为科学培育含碘草莓提供了技术支撑。

关键词： 草莓; I-; IO3-; 吸收特征; 果实品质

本文引用格式

刘会萍, 洪春来, 李睿, 宋明义, 刘嘉伟, 戴之希, 周骏, 翁焕新 . 草莓对I-、IO3-的吸收特征及对其品质的影响[J]. 植物学报, 2017 , 52(2) : 167 -174 . DOI: 10.11983/CBB16021

Abstract

To improve the iodine content of plant foods plays an important role in supplement of natural iodine for humans. We performed a hydroponic experiment to reveal the characteristics of I-, IO3- uptake by strawberry plants. We measured the aboveground biomass of strawberry plants grown in solution at various iodine concentrations. The effects of I-, IO3- absorption on fruit quality were evaluated in terms of variations in content of vitamin C, soluble sugar, total acidity and nitrate of strawberries under different iodine treatments. The higher the I-, IO3- concentration of the solution, the more iodine the strawberry plants absorbed. The absorption was higher for I- than IO3- under the same exogenous iodine concentration. A proper dose of iodine application promoted the growth of strawberry plants, which increased the biomass and also improved fruit quality by increasing vitamin C and soluble sugar content. Grown with 0.5-5.0 mg∙kg-1 IO3- solution, the total acidity and nitrate content of strawberries increased, which reduced the quality of strawberries. Under 0.25-2.5 mg∙kg-1 I- treatment, the total acidity and nitrate content of strawberries decreased, thereby enhancing the quality of strawberries. These results may provide technical support for scientific cultivation of iodine-enriched strawberry.

Key words： strawberry; I-; IO3-; absorption characteristic; fruit quality

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