Threat of Domestic Power Generators to Terrestrial Ecosystem as Expressed in Some Plant Species  

作　　者：Otoide Jonathan Eromosele Kayode Joshua 

机构地区：[1]Department of Plant Science, Ekiti State University, P.M.B. 5363, Ado-Ekiti, Nigeria

出　　处：《Journal of Agricultural Science and Technology(B)》2013年第5期377-384,共8页农业科学与技术（B）

摘　　要：Polluted populations of Euphorbia heterophylla, Chromolaena odorata, Commelina diffusa and Kyllinga pumila were collected fresh from 0.1 m to 0.25 m radii of the exhausted-pipe of power generators used for domestic purposes, whereas, their non-polluted counterparts were collected from distances of 100-110 m away. The length and width of 10 leaves, each of both polluted and non-polluted populations, were measured. Their average leaf areas （LA） were 2.60 ± 0.1 cm2, 14.16 ±0.4 cm2, 5.19 ± 0.8 cm2 and 1.80 ±0.8 cm2 for the polluted populations of each of the species, respectively. Whereas, the LA of their non-polluted counterparts were 4.18±0.7 cm2, 34.39 ±0.2 cm2, 7.51± 0.1 cm2 and 10.76 ± 0.3 cm2, respectively. Damages such as plugged stomatal pores, epidermal cell aberrations and erosion, ruptured stomatal ledges, occasional leaf perforations, irregularly fused cell boundaries and glued leaf surfaces were noticeable in the leaves of the polluted populations. Such were not observed in the non-polluted populations. It was suggested that foliar morphology of these group of plants could serve as phytometer to gauge the threats of power generators used in homes to terrestrial ecosystem.

关 键 词：Domestic power generator Euphorbia heterophylla Chromolaena odorata Commelina diffusa Kyllinga pumila stomatal pores polluted and non-polluted populations epidermal cell damages. 

分 类 号：Q948.524.5[生物学—植物学] X171[环境科学与工程—环境科学]