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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:

第43卷

期数:

2015年04期

页码:

360-362

栏目:

资源与环境

出版日期:

2015-04-25

文章信息/Info

Title:

Effect of high concentration of uranium stress on chlorophyll fluorescence characteristics of plants

作者:

李华丽¹;  唐永金¹; 2;  曾峰¹

1.西南科技大学生命科学与工程学院，四川绵阳 621010； 2.西南科技大学核废物与环境安全国防重点学科实验室，四川绵阳 621010

Author(s):

Li Huali; et al

关键词:

铀; 胁迫; 植物; 叶绿素; 荧光特性; 响应

Keywords:

-

分类号:

Q945.78；Q945.11

DOI:

-

文献标志码:

A

摘要:

在含500 mg/kg铀的核素溶液和清水浇施(CK)的土壤中，分别种植水花生、菊苣、木耳菜、黄秋葵和灰灰菜，出苗后65～70 d测定叶绿素荧光参数和快速光合曲线参数。结果表明，铀胁迫能降低植物PSⅡ的最大光化学效率(F_v/F_m)，提高最低荧光F₀；高浓度铀能胁迫降低植物的快速光曲线初始斜率α、最大相对电子传递速率ETR_max和半饱和光强I_k，极显著降低ETR_max；铀胁迫对不同植物荧光特性有不同的响应，在铀胁迫下，灰灰菜的F_v/F_m略有增加，而菊苣和黄秋葵显著下降。

Abstract:

-

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期：2014-06-06
基金项目：国防基础重点科研(编号：B3120110001)。
作者简介：李华丽(1989—)，女，硕士，从事环境污染生物修复研究。
通信作者：唐永金，教授，从事核污染环境的植物修复研究。E-mail：tangyongjin@swust.edu.cn。

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更新日期/Last Update: 2015-04-25