YUE Hua,SHI Xi-mei.Effects of Drought Stress Simulated by PEG-6000 on Physiological Characteristics of Syneilesis aconitifolia[J].Northern Horticulture,2013,37(11):56-59.
聚乙二醇模拟干旱胁迫对兔儿伞生理特性的影响
- Title:
- Effects of Drought Stress Simulated by PEG-6000 on Physiological Characteristics of Syneilesis aconitifolia
- 文章编号:
- 1001-0009(2013)11-0056-04
- 分类号:
- S 567.23+9
- 文献标志码:
- A
- 摘要:
- 以大庆市干旱草原移植的兔儿伞为试材,在室内模拟干旱条件下,研究了不同质量分数(10%、20%、30%)的聚乙二醇6000(PEG-6000)溶液对兔儿伞形态、叶片相对含水量、细胞膜透性、超氧化物歧化酶(SOD)活性的影响,以期评价兔儿伞的抗旱能力。结果表明:质量分数为10%、20%和30%的PEG-6000胁迫40 h后,兔儿伞的形态均受到不同程度损害,质量分数为20%、30%的PEG-6000 分别胁迫24、16 h后,兔儿伞逐渐失去观赏价值;随着PEG6000质量分数的增加和胁迫时间的延长,兔儿伞叶片相对含水量持续下降,复水后各处理均有7%~10%幅度的上升;细胞膜透性与胁迫程度呈极显著正相关,复水后各处理均有3%~7%幅度的上升;PEG6000质量分数为10%、20%、30%处理的SOD活性在胁迫32、16、24 h时达到最大值,说明兔儿伞在受到干旱胁迫伤害时,具有能有效清除超氧离子以抵御干旱胁迫的能力。
- Abstract:
- Taking Syneilesis aconitifolia transplanted from arid grassland habitats of Daqing as test materials,the influence of different mass concentrations (10%,20% and 30%) of PEG-6000 osmotic stress on S.aconitifolia’s forms,leaf relative water content,membrane permeability and superoxide dismutase (SOD) activity under the condition of indoor simulation drought were studied in order to evaluate its drought resistance.The results showed that its forms were subject to varying damage after 40 h of the mass concentration of 10%,20% and 30% PEG6000 stress,the ornamental value of S.aconitifolia began to disappeared gradually after 24 h and 16 h of PEG6000 stress by 20% and 30% PEG-6000,respectively.With the concentration of PEG6000 increasing and the time of stress prolonging,the leaf relative water content continued to decline,and then increased by 7%~10% after rewatering.It existed a very significant positive correlation between the membrane permeability and the level of stress,and then increased by 3%~7% after rewatering.The maximum value of SOD activity appeared at 32 h,16 h and 24 h of stress by 10%,20% and 30% PEG-6000,respectively,it showed that the protective enzyme system of S.aconitifolia could effectively remove uperoxides to resist the drought stress under drought stress damage.
参考文献/References:
[1]中科院中国植物志编辑委员会.中国植物志[M].第77卷,第1分册.北京:科学出版社,1999:90-91.
相似文献/References:
[1]岳桦,张文娟.PEG-6000模拟干旱胁迫对并头黄芩幼苗生理特性的影响[J].北方园艺,2013,37(12):65.
YUE Hua,ZHANG Wen-juan.Effect of Drought Stress Simulated by PEG-6000 on Physiological Characteristics of Scutellaria scordifolia F. Seedling[J].Northern Horticulture,2013,37(11):65.
[2]张 灏,曹 慧.模拟干旱胁迫对八棱海棠根系生理生化指标的影响[J].北方园艺,2014,38(03):69.
ZHANG Hao,CAO Hui.Effect of Drought Stress on Physiological Characteristics of Root in Malus robusta Rehd.[J].Northern Horticulture,2014,38(11):69.
[3]王 彬,李长鼎,兰 剑,等.聚乙二醇-6000胁迫下十二个草地早熟禾品种萌发期抗旱性比较研究[J].北方园艺,2012,36(24):54.
WANG Bin,LI Chang-ding,LAN Jian,et al.Study on Drought Resistance at Germination Stage of 12 Varieties of Poa pratensis L.under PEG-6000 Stress[J].Northern Horticulture,2012,36(11):54.
[4]蒋 林,於艳萍,刘昆成,等.聚乙二醇-6000对山白兰苗木生理特性的影响[J].北方园艺,2012,36(24):77.
JIANG Lin,YU Yan-ping,LIU Kun-cheng,et al.Effect of PEG-6000 on Physiological Characteristics of Michelia alba Seedlings[J].Northern Horticulture,2012,36(11):77.
[5]谢长海,王培丹,刘艳玲,等.巨菌草对干旱胁迫的生理响应及相关性分析[J].北方园艺,2015,39(02):129.[doi:10.11937/bfyy.201502037]
XIE Chang-hai,WANG Pei-dan,LIU Yan-ling,et al.Correlation Analysis and Physiological Characteristics of Pennisetum sp.Under Drought Stress[J].Northern Horticulture,2015,39(11):129.[doi:10.11937/bfyy.201502037]
[6]高昆,王佳琪.干旱胁迫对锦灯笼种子萌发及幼苗生理特性的影响[J].北方园艺,2020,44(07):132.[doi:10.11937/bfyy.20192885]
GAO Kun,WANG Jiaqi.Effects of Drought Stress on the Seed Germination and Physiological Characteristics of the Seedling of Physalis alkengi L.[J].Northern Horticulture,2020,44(11):132.[doi:10.11937/bfyy.20192885]
备注/Memo
第一作者简介:岳桦(1962-),女,硕士,教授,硕士生导师,研究方向为园林植物资源与应用。E-mail:yuehua0123@126.com.