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The Response of Radish to Nitrogen Dioxide, Sulfur Dioxide, and Ozone, Alone and in Combination
Author(s) -
Reinert R. A.,
Gray T. N.
Publication year - 1981
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1981.00472425001000020024x
Subject(s) - raphanus , nitrogen dioxide , ozone , sulfur dioxide , dry weight , shoot , chemistry , pollutant , carbon dioxide , nitrogen , horticulture , agronomy , zoology , biology , inorganic chemistry , organic chemistry
Effects on radish ( Raphanus sativus L.) cv. ‘Cherry Belle’ of nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), and ozone (O 3 ) alone and in combination at 0.2 or 0.4 ppm of each pollutant were studied. There was no difference in foliage or root weight of radish between exposure durations of 3 or 6 hours, and no significant interaction of hours with air pollutant and concentration. Ozone reduced root dry weight more at 0.4 ppm than at 0.2 ppm. Sulfur dioxide depressed the root/shoot ratio at both 0.2 and 0.4 ppm; however, when NO 2 and SO 2 were both present there was synergistic depression of the root/shoot ratio at 0.4 ppm. The average O 3 ‐induced reduction in root weight of radish (1.75 g fresh and 101 mg dry, per plant) was additive in the presence of NO 2 and SO 2 . The weight of the root was reduced even though the foliage was the direct receptor of the pollutant stress.