|本期目录/Table of Contents|

[1]刘长风,王椰,段士鑫,等.铬胁迫下紫花苜蓿种子萌发和幼苗生理响应的主成分分析[J].江苏农业科学,2022,50(19):176-182.
 Liu Changfeng,et al.Principal component analysis of seed germination and physiological response of alfalfa under chromium stress[J].Jiangsu Agricultural Sciences,2022,50(19):176-182.
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铬胁迫下紫花苜蓿种子萌发和幼苗生理响应的主成分分析(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第50卷
期数:
2022年第19期
页码:
176-182
栏目:
畜牧兽医与水产蚕桑
出版日期:
2022-10-05

文章信息/Info

Title:
Principal component analysis of seed germination and physiological response of alfalfa under chromium stress
作者:
刘长风1王椰1段士鑫1王天楚1刘学贵23高品一3
1. 沈阳化工大学环境与安全工程学院,辽宁沈阳 110142; 2.沈阳化工大学功能分子研究所,辽宁沈阳 110142;3. 沈阳化工大学制药与生物工程学院,辽宁沈阳 110142
Author(s):
Liu Changfenget al
关键词:
紫花苜蓿铬胁迫主成分分析氧化应激铬积累
Keywords:
-
分类号:
S541+.101;X53
DOI:
-
文献标志码:
A
摘要:
为探讨不同浓度(0、1、5、10、20、30、50 mg/L)Cr6+胁迫下紫花苜蓿生长状况及抗胁迫响应变化规律,基于主成分分析法,探究水培试验下苜蓿Cr6+胁迫生理生化响应特征。结果表明,Cr6+浓度≤5 mg/L时,对苜蓿种子萌发、叶绿素含量、可溶性蛋白含量具有显著促进作用(P<0.05),AsA+GSH含量达对照(CK)的2.17~3.30倍;Cr6+浓度≥10 mg/L 时抑制苜蓿种子萌发、叶绿素合成及抗氧化循环;随Cr6+浓度增加,苜蓿种子活力指数、幼苗根长、茎长和根系活力显著下降(P<0.05),幼苗体内铬累积量、MDA含量、H2O2含量、脯氨酸含量及POD活性显著增加(P<005),GSH含量达CK的3.69~6.54倍。这表明紫花苜蓿能通过调节自身的氧化应激水平及AsA-GSH循环来抵御低浓度Cr6+胁迫。利用主成分分析法研究发现,铬胁迫下苜蓿幼苗的铬积累量、POD活性、H2O2含量、MDA含量、根系活力这5个指标能良好表征Cr6+胁迫下苜蓿的生理响应。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2021-11-02
基金项目:国家重点研发计划(编号:2017YFD0800301);辽宁省教育厅基础研究基金(编号:LJ2020026)。
作者简介:刘长风(1974—),女,吉林镇赉人,博士,副教授,主要从事资源循环利用及土壤重金属污染修复研究。E-mail:changfeng.liu@syuct.edu.cn。
通信作者:王椰,硕士研究生,主要从事土壤重金属污染修复研究。E-mail:1276460214@qq.com。
更新日期/Last Update: 2022-10-05