模拟酸雨胁迫对4种草坪草种子萌发的影响  

Effect of simulated acid rain stress on germination of four turf grass seeds

作　　者：田如男[1,2] 张培东 程澄[1] 

机构地区：[1]南京林业大学风景园林学院,江苏南京210037 [2]南京大学医药生物技术国家重点实验室,江苏南京210093 [3]江苏师豪环境艺术工程有限公司,江苏南京210046

出　　处：《南京林业大学学报（自然科学版）》2011年第5期5-10,共6页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金项目(30972408)

摘　　要：以中性溶液(pH=7.0)为对照,研究了模拟酸雨(pH为2.0、2.5、3.0、3.5、4.0、5.0)胁迫对黑麦草(Lolium perenne)、高羊茅(Festuca arundinacea)、匍匐翦股颖(Agrostis palustris)和狗牙根(Cynodon dactylon)4种多年生草坪草种子萌发的影响。结果表明:酸雨胁迫对4种草坪草种子萌发的影响不同,pH=2.0的酸雨完全抑制了4种草坪草种子的萌发,表现为发芽率、发芽势、活力指数均为零。黑麦草、高羊茅种子能在pH≥2.5的酸雨胁迫下正常萌发,匍匐翦股颖种子能在pH≥3.0的酸雨胁迫下正常萌发,狗牙根种子在不同程度酸雨胁迫下均萌发不良。此外,酸雨胁迫还延缓了4种草坪草种子的萌发进程。应用主成分分析和隶属函数分析法对4种草坪草种子抗酸雨胁迫能力进行综合评定,得出4种草坪草种子抗酸雨胁迫能力由强到弱的顺序依次为高羊茅、黑麦草、匍匐翦股颖、狗牙根。The seeds of Lolium perenne,Festuca arundinacea,Agrostis palustris and Cynodon dactylon were treated with simulated acid rain at pH 2.0,2.5,3.0,3.5,4.0,5.0 and 7.0（as control） to study the effects of acid rain on their germination.The results showed that the seeds germination of four turf grass under acid rain stress were affected at different levels.Acid rain intensity pH 2.0 completely inhibited the seed germination of turf grass,showing no germination was observed and germination energy and vigor index was 0.0.The seeds of L.perenne and F.arundinacea could germinate normally under acid rain stress（pH≥2.5）,and the seeds of A.palustris could germinate normally under acid rain stress（pH≥3.0）.The seeds of C.dactylon germinated poorly under acid rain stress.In addition,the process of germination became slow under acid rain stress.The comprehensive evaluation results derived from principal components analysis and subordinate function analysis showed the order（from strong to weak） of anti-acid rain ability of the 4 turf grass seeds was F.arundinaceaL.perenneA.palustrisC.dactylon.

关 键 词：模拟酸雨 草坪草 种子萌发 隶属函数分析 主成分分析 

分 类 号：S688.4[农业科学—观赏园艺] Q945.79[农业科学—园艺学]