J Integr Plant Biol. ›› 1980, Vol. 22 ›› Issue (3): -.

• Research Articles •    

On Acute Injury and Relative Resistance to Sulfur Dioxide of Trees and Shrubs for Greening

Liu Yu-qin, Wu Gen-qian, Tan Chang and Yu Shu-wen   

Abstract: In order to select trees and shrubs resistant to SO2 and to provide information concerning acute injury, fumigation experiments were carried out on 71 species common to the region of Shanghai at three seasons in the phytotron. Two identical dynamic fumigation cabinets were used. The branches detached from plants were fumigated for 6 hours at concentrations ranging from 0.5 to 5 ppm. The patterns of acute leaf injury and the seasonal variabilities of resistance to SO2 were observed and are described. Based on the estimated threshold value of leaf injury, the relative resistance to SO2 of the tested trees and shrubs can be grouped into 5 categories. The order of resistance is in the main in accordance with the field experience.

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