几种园林植物对甲醛污染的反应研究

Study on Reaction of Several Garden Plans to Formaldehyde Pollution

关键词:  园林植物  甲醛污染  过氧化氢酶  相对电导率

Key words:  garden plant  formaldehyde pollution  catelase  relative electric conductivity

摘要:

将小驳骨(Gendarussa vulgaris Nees)、白蝉(Gardenia jasminoides var.fortuniana Lind.)、红花酢浆草(Oxalis corymbosa DC.)、三角梅(Bougainvillea spectabilis Willd.)、朱槿(Hibiscus rosa-sinensis L.)、香港鹅掌柴(Schefflera arboricola cv.Hongkong)、米仔兰(Aglaia odorata Lour.)、九里香(Murraya paniculata(L.)Jack.)8种园林植物的成熟叶片分别置于密闭的容器中,设0.1、0.2、0.3、0.4mg/m³4个甲醛浓度处理,以空气为对照,测定植物叶片的伤害指数、过氧化氢酶(CAT)活性和叶片细胞膜透性,研究8种园林植物的成熟叶片对甲醛污染的反应。结果显示,甲醛污染处理后8种植物叶片均出现褐色斑或水渍状斑两种症状,伤害指数与处理浓度、处理时间存在正相关;在甲醛处理浓度为0.1mg/m³时,各植物叶片的CAT活性都较对照降低,细胞膜透性明显增大。综合来看,三角梅、红花酢浆草、小驳骨对甲醛污染极为敏感,米仔兰、白蝉、朱槿次之,而香港鹅掌柴、九里香对甲醛污染的抗性则较强。

Abstract:

The reactions of ripe leaves of eight species garden plant which were disposed in airtight container to formaldehyde pollution were studied by determining their injured index, activities of catelase (CAT) and membrane permeability. The results indicated that the main damage symptoms in these plant leaves treated with formaldehyde pollution were brown spots and water stains, and there were positive correlation between the injury index and formaldehyde concentration and treating time.The catelase (CAT) activity of all kinds plant leaves were lower than that of control, and their membrane permeability rapidly increased when the formaldehyde concentration was 0.1 mg/m³.On the whole, in this species plant, Bougainvillea spectabilis Willd., Oxalis corymbosa DC.and Gendarussa vulgaris Nees were extremely sensitively to formaldehyde pollution, Aglaia odorata Lour., Gardenia jasminoides var.fortuniana Lind.and Hibiscus rosa-sinensis L.were next, but Schefflera arboricola cv.Hongkong and Murraya paniculata (L.) Jack.had stronger resistance to formaldehyde pollution.