Growth impact of O3, NO2 and/or SO2 on Platanus occidentalis

Agriculture and Environment Pub Date : 1982-11-01 DOI:10.1016/0304-1131(82)90019-4

L.W. Kress , J.M. Skelly , K.H. Hinkelmann

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引用次数: 11

Abstract

Seedlings of two half-sib families of American sycamore were exposed to 0.05 ppm O₃, 0.10 ppm NO₂, and/or 0.14 ppm SO₂ for 6 h/day for 28 consecutive days. The treatments were O₃, NO₂, SO₂ (each used alone), O₃ + SO₂, O₃ +NO₂, and O₃ + NO₂ SO₂. Significant growth suppressions were noted for both families when exposed to O₃ + SO₂ or O₃ + SO₂ + NO₂. The O₃ + SO₂ treatment had a more significant effect than O₃ alone, and adding NO₂ to the O₃ + SO₂ treatment further suppressed height growth significantly. A 45% and 34% growth suppression was observed for the two families (16-Syc-19 and 16-Syc-23), respectively, in response to the three pollutants in combination. The height growth of both families was significantly suppressed by O₃ alone in some cases. Both families exhibited significant height growth recovery 2 weeks after removal of the pollutant stress. Pollution-induced foliar injury was never evident on the seedlings.

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O3、NO2和/或SO2对西侧柏生长的影响

以美国梧桐2个同父异母科幼苗为材料，分别在0.05 ppm O3、0.10 ppm NO2和0.14 ppm SO2环境下连续28天，每天处理6 h。处理分别为O3、NO2、SO2(单独使用)、O3 + SO2、O3 +NO2和O3 +NO2 SO2。当暴露于O3 + SO2或O3 + SO2 + NO2时，两个家族的生长均受到显著抑制。O3 + SO2处理比O3单独处理效果更显著，在O3 + SO2处理的基础上添加NO2进一步显著抑制了幼苗的高度生长。在这三种污染物的共同作用下，两个家族(16-Syc-19和16-Syc-23)的生长分别受到45%和34%的抑制。在某些情况下，O3对两家系的株高生长均有显著抑制作用。去除污染胁迫2周后，两科植物均表现出显著的生长恢复。污染诱导的叶面损伤在幼苗上不明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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