假鹰爪和九节在交通尾气污染绿地中的生理表现  

Physiological Performance of Desmos chinensi and Psychotria asiatica in the Environment of Auto-exhaust Pollution

作　　者：欧阳勤森[1] 袁志永[1] 余金昌[1] 马洪洋[1] 韦阳连[1] 

机构地区：[1]东莞植物园,广东东莞523086

出　　处：《安徽农业科学》2015年第15期8-10,共3页Journal of Anhui Agricultural Sciences

基　　金：东莞市科技计划项目(2011108102039;2012108102054;201450710100537)

摘　　要：以在交通尾气污染绿地中生长良好的红叶石楠为对照,比较、分析了在交通尾气污染绿地假鹰爪、九节和红叶石楠的叶绿素含量、气体交换特征和叶绿素荧光特征。结果表明,假鹰爪和九节叶绿素总含量与红叶石楠不存在差异,它们的PSⅡ最大光化学量子产量(Fv/Fm)均低于红叶石楠。3个试验树种在夏季的净光合速率(Pn)大小为红叶石楠>假鹰爪>九节,在冬季的大小为九节>红叶石楠>假鹰爪。The chlorophyll content,leaf gas exchange and chlorophyll fluorescence parameters of Desmos chinensi and Psychotria asiatica in the environment of auto-exhaust pollution were determined in this test,with Photinia × fraseri,who has adapted to auto-exhaust pollution,as the control.The results show that there was no significant difference in chlorophyll content among Desmos chinensi,Psychotria asiatica and Photinia ×fraseri.Both the quantum yield of PSⅡ electron transport（Fv/ Fm） of Desmos chinensi and Psychotria asiatica were lower than that of Photinia ×fraseri.The net photosynthetic rate（Pn） of 3 test species was Photinia × fraseri 〉 Desmos chinensi 〉 Psychotria asiatica in summer,but in winter it became Psychotria asiatica 〉 Photinia × fraseri 〉 Desmos chinensi.

关 键 词：假鹰爪 九节 叶绿素 气体交换特征 叶绿素荧光特征 

分 类 号：S731.2[农业科学—林学]