外源褪黑素对低温胁迫下红树莓叶片生理特性的影响

S663.2; [目的]为缓解红树莓初冬低温冷害,通过研究外源褪黑素(melatonin,MT)处理对低温胁迫下红树莓抗性的影响,明确MT对红树莓耐冷能力的作用及适宜浓度.[方法]以盆栽双季红树莓波尔卡为供验试材,在初冬降温时期,对叶面喷施不同浓度MT(0、50、100、150、200 μmol·L-1),研究其对低温胁迫下波尔卡红树莓叶片相对电导率、叶绿素含量、抗氧化酶活性和渗透调节物质含量的影响.[结果]在褪黑素处理后的第5天时,150 μmol·L-1 MT处理的叶片相对电导率、MDA含量和可溶性糖含量值最低;叶绿素a、总叶绿素、可溶性蛋白质、淀粉含量及SOD、POD、CAT活性最高.[...

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Published in果树学报 Vol. 39; no. 3; pp. 416 - 425
Main Authors 张立业, 邱佳奇, 王晓香, 王鑫月, 常飞杨, 袁旭, 张家安, 刘洋, 李寒, 张雪梅
Format Journal Article
LanguageChinese
Published 河北农业大学林学院,河北保定071001 10.03.2022
Subjects
抗氧化系统
红树莓
外源褪黑素
低温胁迫
Online AccessGet full text
ISSN1009-9980
DOI10.13925/j.cnki.gsxb.20210387

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Abstract S663.2; [目的]为缓解红树莓初冬低温冷害,通过研究外源褪黑素(melatonin,MT)处理对低温胁迫下红树莓抗性的影响,明确MT对红树莓耐冷能力的作用及适宜浓度.[方法]以盆栽双季红树莓波尔卡为供验试材,在初冬降温时期,对叶面喷施不同浓度MT(0、50、100、150、200 μmol·L-1),研究其对低温胁迫下波尔卡红树莓叶片相对电导率、叶绿素含量、抗氧化酶活性和渗透调节物质含量的影响.[结果]在褪黑素处理后的第5天时,150 μmol·L-1 MT处理的叶片相对电导率、MDA含量和可溶性糖含量值最低;叶绿素a、总叶绿素、可溶性蛋白质、淀粉含量及SOD、POD、CAT活性最高.[结论]在低温胁迫下喷施150 μmol·L-1 MT可增加红树莓叶片抗氧化酶活性,减轻膜脂过氧化反应并调节渗透物质含量,从而有助于缓解胁迫伤害,提高红树莓耐冷能力.
AbstractList S663.2; [目的]为缓解红树莓初冬低温冷害,通过研究外源褪黑素(melatonin,MT)处理对低温胁迫下红树莓抗性的影响,明确MT对红树莓耐冷能力的作用及适宜浓度.[方法]以盆栽双季红树莓波尔卡为供验试材,在初冬降温时期,对叶面喷施不同浓度MT(0、50、100、150、200 μmol·L-1),研究其对低温胁迫下波尔卡红树莓叶片相对电导率、叶绿素含量、抗氧化酶活性和渗透调节物质含量的影响.[结果]在褪黑素处理后的第5天时,150 μmol·L-1 MT处理的叶片相对电导率、MDA含量和可溶性糖含量值最低;叶绿素a、总叶绿素、可溶性蛋白质、淀粉含量及SOD、POD、CAT活性最高.[结论]在低温胁迫下喷施150 μmol·L-1 MT可增加红树莓叶片抗氧化酶活性,减轻膜脂过氧化反应并调节渗透物质含量,从而有助于缓解胁迫伤害,提高红树莓耐冷能力.
Author 张家安
常飞杨
李寒
刘洋
张立业
邱佳奇
王鑫月
袁旭
张雪梅
王晓香
AuthorAffiliation 河北农业大学林学院,河北保定071001
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Author_FL WANG Xinyue
LIU Yang
CHANG Feiyang
LI Han
ZHANG Xuemei
WANG Xiaoxiang
QIU Jiaqi
YUAN Xu
ZHANG Jia'an
ZHANG Liye
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Keywords 抗氧化系统
红树莓
外源褪黑素
低温胁迫
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Title 外源褪黑素对低温胁迫下红树莓叶片生理特性的影响
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