海菜花浸提液对2种沉水植物的化感作用  

Allelopathy of Extracts from Ottelia acuminatas on Two Submerged Plants

作　　者：杨栋林[1,2] 陈坤平 吴荻 方轶男 潘巍 侯丛林 廖文雪[2] YANG Dong-lin;CHEN Kun-ping;WU Di(Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection,Ministry of Education,Guilin,Guangxi 541004;College of Life Sciences,Guangxi Normal University,Guilin,Guangxi 541004)

机构地区：[1]珍稀濒危动植物生态与环境保护教育部重点实验室,广西桂林541004 [2]广西师范大学生命科学学院,广西桂林541004

出　　处：《安徽农业科学》2020年第22期77-80,共4页Journal of Anhui Agricultural Sciences

基　　金：广西高校科学技术研究项目(YB2014056);广西师范大学教育教学改革项目(2017XJGB40)。

摘　　要：以2种沉水植物密刺苦草、菹草为试验材料,用质量浓度5 g/L的海菜花浸提液处理,到期测定因此产生的化感作用。结果表明,在质量浓度5 g/L的海菜花浸提液处理下,菹草和密刺苦草的SOD活性、POD活性和脯氨酸含量均下降,丙二醛含量显著升高。叶绿素a、b含量也有不同程度的下降,其中,浸提液处理组菹草中叶绿素与对照组相比无显著性差异(P>0.05),浸提液处理组密刺苦草叶绿素含量与对照组相比有显著性差异(P<0.01)。说明海菜花浸提液化感物质对密刺苦草、菹草均有胁迫作用,胁迫作用的强弱顺序为密刺苦草>菹草。The allelopathy were determined by using two kinds of submerged plants(Vallisneria natans,Potamogeton crispus)as experimental materials,and treated with the extract of Ottelia acuminata with a mass concentration of 5 g/L.The results showed that under the treatment of 5 g/L of Ottelia acuminata extract,the SOD activity,POD activity and proline content of allisneria natans and Potamogeton crispus decreased,and the MDA content increased significantly.The content of chlorophyll a and b also decreased in different degrees.The chlorophyll content in Potamogeton crispus in the extract treatment group was not significantly different from that in the control group(P>0.05),and the chlorophyll content in Vallisneria natans in the extract treatment group was significantly different from that in the control group(P<0.01).It was shown that the liquifictive substances extracted from Ottelia acuminata had the stress effect on Vallisneria natans and Potamogeton crispus,and the order of the stress was Vallisneria natans>Potamogeton crispus.

关 键 词：海菜花 菹草 密刺苦草 抗逆性 抗氧化酶 化感作用 

分 类 号：Q945[生物学—植物学]