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中文摘要：
自然条件下,分别增加0(CK组)、0.01(R1组)和0.015 J.m-2.s-1(R2组)3种强度的UV-B辐射处理玉米(Zea maysL.),对重庆地区C4植物玉米整个生长期内光合作用的影响进行研究。结果表明,增强UV-B辐射导致玉米幼苗叶片光合色素含量(包括叶绿素a、叶绿素b、总叶绿素和类胡萝卜素)、Hill反应活力、气孔导度、光合速率下降,且随UV-B辐射强度的增加,玉米幼苗光合作用所受抑制增强,而玉米成株所受影响不大。
英文摘要：
Under natural conditions,we studied the photosynthesis of maize(Zea mays L.) in its whole life treated with different intensities,i.e.,0 (CK),0.01(R1) and 0.015 J·m~(-2)·s~(-1)(R2) of ultraviolet-B(UV-B) radiation.The results showed that enhanced UV-B radiation reduced the photosynthetic pigment(including chlorophyll a,chlorophyll b,total chlorophyll and carotenoid) contents,Hill reaction activity,stamotal conductance,and net photosynthetic rate of maize seedling's leaf,but had no effects on the photosynthe...
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