模拟酸雨对外来入侵植物五爪金龙幼苗生理特性的影响
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摘要
采用盆栽模拟试验研究了不同的酸雨对入侵植物五爪金龙叶片生理指标的影响。试验共设5个酸雨条件,p H值分别为2. 5,3,4,5,6。结果表明,A.与对照组相比,当酸雨p H为6时,五爪金龙幼苗叶片中丙二醛(MDA)含量下降,SOD、CAT活性及叶绿素含量都有所上升,POD活性Pro含量有所下降,说明五爪金龙幼苗对p H为6的酸雨耐受性好。B.当模拟酸雨p H为2. 5～5时,与对照组相比,MDA含量明显上升,CAT和SOD活性及叶绿素含量随着模拟酸雨酸性增强而上升,POD活性与Pro含量随着模拟酸雨酸性增强而下降。五爪金龙幼苗能通过提高两种抗氧化酶SOD、CAT活性、增加叶绿素含量来抵抗酸雨胁迫的影响。
The effects of different simulated acid rain on leaf physiological indexes of invasive Ipomoea Cairica were studied by pot experiment,five treatments were set up with different simulated acid rain,pH values were 2. 5,3,4,5,6,respectively. The results are as followings:( 1) Compared with the control group( CK),at pH = 6 treatment group,Malondialdehyde( MDA) content in leaves of I. Cairica seedlings decreased,SOD,CAT activity and chlorophyll content increased,POD activity Pro content decreased,the results showed that I. Cairica seedlings had good tolerance to simulated acid rain at pH 6.( 2) When the simulated acid rain pH was 2. 5-5,the content of MDA increased significantly,the activity of CAT,SOD and chlorophyll content increased with the increase of acidity,POD activity and Pro content decreased. The seedlings can resist acid rain stress by increasing two antioxidant enzymes( SOD and CAT)activities and chlorophyll content.
The effects of different simulated acid rain on leaf physiological indexes of invasive Ipomoea Cairica were studied by pot experiment,five treatments were set up with different simulated acid rain,pH values were 2. 5,3,4,5,6,respectively. The results are as followings:( 1) Compared with the control group( CK),at pH = 6 treatment group,Malondialdehyde( MDA) content in leaves of I. Cairica seedlings decreased,SOD,CAT activity and chlorophyll content increased,POD activity Pro content decreased,the results showed that I. Cairica seedlings had good tolerance to simulated acid rain at pH 6.( 2) When the simulated acid rain pH was 2. 5-5,the content of MDA increased significantly,the activity of CAT,SOD and chlorophyll content increased with the increase of acidity,POD activity and Pro content decreased. The seedlings can resist acid rain stress by increasing two antioxidant enzymes( SOD and CAT)activities and chlorophyll content.
引文
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[19]朱珣之,刘莎,阳从魏,等.模拟酸雨对紫茎泽兰种子萌发和幼苗生长及化感作用的影响[J].江苏科技大学学报,2016,(04):390-398.
[20]宋莉英,柯展鸿,孙兰兰,等.模拟酸雨对3种菊科入侵植物光合特性的影响[J].植物学报,2013,48(02):160-167.
[21]曹欣,韩诗畴,吕欣,等.模拟酸雨对薇甘菊种子萌发和幼苗生长的影响[J].生态环境学报,2010,19(03):679-685.
[2]付晓萍.模拟酸雨对6种城市绿化植物生理生态学特性的影响[D].湖南:中南林业科技大学,2007.
[3]刘培桐.环境学概论[M].北京:高等教育出版社,1991.
[4]杨宗慧.我国酸雨状况和对策[J].云南环境科学,2002,21(01):25-26.
[5]齐泽民,钟章成,邓君,等.模拟酸雨对杜仲叶膜脂过氧化及氮代谢的影响[J].西南师范大学学报(自然科学版),2001,26(01):38-44.
[6]林威鹏,方丹丹,吴夏明,等.从生态化学计量学的角度初探五爪金龙(lpomoea cairica)的入侵机制[J].生态环境学报,2014,23(10):1593.
[7]李振宇,解焱.中国外来入侵种[M].北京:中国林业出版社,2002.
[8]廖周瑜,侯玉平,赵则海,等.五爪金龙化感效应研究Ⅱ:凋落物的化感潜力[J].中山大学学报(自然科学版),2008,47(04):63-67.
[9]胡玉佳,王永繁.两种草质藤本杂草营养生长与生殖生长研究[J].中山大学学报(自然科学版),2001,40(01):93-96.
[10]朱慧,吴双桃,等.杂草五爪金龙对入侵地植物群落和土壤肥力的影响[J].生态与农村环境学报,2012,28(05):505-506.
[11]廖宜英,林金哲,郑灿钟.农林业入侵杂草五爪金龙生活史特性研究[J].江西农业学报,2006,18(06):112-115.
[12]林淳,刘国坤.外来入侵植物五爪金龙(Ipomoea cairica)的研究进展[J].亚热带农业研究,2008,4(03):177.
[13]赵则海.模拟酸雨对五爪金龙幼苗光合生理特性的影响[J].生态环境学报,2014,23(09):1499.
[14]李小方,张志良.植物生理学实验指导(第五版)[M].北京:高等教育出版社,2016.
[15]张志良.植物生理学实验指导(第四版)[M].北京:高等教育出版社,2009.
[16]邵文鹏.几种常绿阔叶植物抗寒性研究[D].泰安:山东农业大学,2009.
[17]侯欣.不同光照条件下NO3-胁迫对黄瓜幼苗生理生化特性的影响[D].泰安:山东农业大学,2010.
[18]夏阳,孙明高,李国雷,等.盐胁迫对四种园林绿化树种叶片中叶绿素含量动态变化的影响[J].山东农业大学学报(自然科学版),2005,36(01):30-34.
[19]朱珣之,刘莎,阳从魏,等.模拟酸雨对紫茎泽兰种子萌发和幼苗生长及化感作用的影响[J].江苏科技大学学报,2016,(04):390-398.
[20]宋莉英,柯展鸿,孙兰兰,等.模拟酸雨对3种菊科入侵植物光合特性的影响[J].植物学报,2013,48(02):160-167.
[21]曹欣,韩诗畴,吕欣,等.模拟酸雨对薇甘菊种子萌发和幼苗生长的影响[J].生态环境学报,2010,19(03):679-685.