|本期目录/Table of Contents|

[1]陈永林,陈小锦,丛玮玮,等.不同价态铬对玉米幼苗铬吸收动力学特征及生长发育的影响[J].江苏农业科学,2017,45(03):46-50.
 Chen Yonglin,et al.Effects of chromium with different valence on chromium absorption kinetics characteristics and growth of corn seedling[J].Jiangsu Agricultural Sciences,2017,45(03):46-50.
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不同价态铬对玉米幼苗铬吸收动力学特征
及生长发育的影响
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第45卷
期数:
2017年03期
页码:
46-50
栏目:
遗传育种与耕作栽培
出版日期:
2017-02-05

文章信息/Info

Title:
Effects of chromium with different valence on chromium absorption kinetics characteristics and growth of corn seedling
作者:
陈永林 陈小锦 丛玮玮 余彬彬 盛海君 张苏波 居静
扬州大学环境科学与工程学院,江苏扬州 225127
Author(s):
Chen Yonglinet al
关键词:
玉米幼苗吸收动力学特征生长发育
Keywords:
-
分类号:
S513.01
DOI:
-
文献标志码:
A
摘要:
通过水培法,研究不同价态铬Cr(Ⅵ)和Cr(Ⅲ)对玉米幼苗铬吸收曲线及生长发育的影响。结果表明:(1)玉米幼苗对Cr(Ⅵ)和Cr(Ⅲ)的吸收符合Michaelis-Menten模拟曲线方程特征,随着Cr(Ⅵ)和Cr(Ⅲ)处理浓度的升高,玉米幼苗地上部、根系及整株的Cr含量随之增加;玉米幼苗体内的Cr主要富集在根部,很少往地上部分转运;(2)Cr(Ⅲ)与玉米幼苗根细胞吸收位点的亲和力小于Cr(Ⅵ),但玉米幼苗根系对Cr(Ⅲ)的吸收速率和吸收能力要明显高于Cr(Ⅵ),这可能是玉米幼苗对Cr(Ⅲ)的生物富集能力高于Cr(Ⅵ)的原因之一;(3)Cr(Ⅵ)对玉米幼苗的毒害要高于Cr(Ⅲ),表现在Cr(Ⅵ)对玉米幼苗鲜质量、叶绿素含量、根系性状及根系参数(根长、根表面积、根体积)的影响要大于Cr(Ⅲ),尤其在较高浓度Cr(Ⅵ)时,玉米幼苗出现明显的中毒症状,叶色枯萎,根系发黄腐烂,类似盐胁迫症状;虽然,在低浓度下Cr(Ⅲ)对玉米幼苗的毒害程度较小,但在较高浓度下还是表现了抑制玉米幼苗的生长发育。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2015-12-21
基金项目:江苏省扬州市自然科学基金青年科技人才项目(编号:YZ2014053);扬州大学科技创新培育基金(编号:2014CXJ033)。
作者简介:陈永林(1991—),男,江苏泰州人,硕士研究生,主要从事植物营养与施肥的理论与技术研究。E-mail:893373460@qq.com。
通信作者:居静,博士,副教授,主要从事植物营养生理研究。E-mail:jujing@yzu.edu.cn。
更新日期/Last Update: 2017-02-05