Effects of Sulfur Dioxide and Nitrogen Dioxide Alone and in Combinations on the Germination and Protonemal Growth of the Moss Spores
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In order to develop a method for detecting air pollution by using bryometer, the effects of SO<SUB>2</SUB> and NO<SUB>2</SUB> alone and in combinations on the germination and protonemal growth of the moss spores were investigated. The spores of four moss species of <I>Pylaisia brotheri, Entodon challengeri, Fabronia matsumurae</I> and <I>Venturiella sinensis</I> on agar culture medium were continuously exposed to SO<SUB>2</SUB> (0.05-0.20 ppm), NO<SUB>2</SUB> (0.025-0.20 ppm) and their mixtures for 7-40 days.<BR>The order of sensitivity of their spores for SO<SUB>2</SUB>, NO<SUB>2</SUB> and their mixtures was <I>P. brotheri >E. challengeri>F. matsumurae>V. sinensis</I>, which was in agreement with that of their gametophores usually observed in the field.<BR>The rates of spore germination and protonemal growth of <I>F. matsumurae</I> obtained by using a bryometer were compared with those expected from the results of gas exposure experiments. The observed rate, which was approximated with the expected rate in winter, differed from the expected one clearly in autumn. It was suggested that the germination and protonemal growth of the spores might be affected with not only SO<SUB>2</SUB> and NO<SUB>2</SUB> but with other pollutants such as photochemical oxidants.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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