暗呼吸速率 在 生物学 分类中 的翻译结果(2)

The results showed that, with decreasing irradiance, all of four species displayed decreasing maximum net photosynthetic rate (Pmax), saturation irradiance, light compensation point, dark respiration rate (Rd), Chl a/b ratios, leaf thickness, stomatal density and lamina mass per area, and increasing spongy/palisade ratio and chlorophyll content.

研究结果表明,与强光下相比,弱光下生长的4种植物最大净光合速率、光饱和点、光补偿点、暗呼吸速率、叶绿素a/b、叶片和栅栏组织厚度、气孔密度和比叶重都降低,而海绵组织/栅栏组织和叶绿素含量升高。

The ture photosynthetic rate of Phoebe bournei enhanced over 21.7% after treating with 700ppm CO2 for short time, but decreased about 89% after treating with 700ppm CO2 for three months. In comparision with the control, the dark respiration and potorespiration per unit leaf area decreased by 95.6% and 43.7% respectively.

必须指出的是，尽管野外、温室、受控环境下的 实验研究表明 co2 浓度升高可促使光合速率的增大和植物的生长，但并不能肯 定在其它对光合作用具有抑制作用的胁迫因素（例如缺水缺氮）存在的条件下这 种相似的增加能够在全球范围内发生。在一定范围内提高co2的浓度能提高光合作用的速率，co2浓度达到一定值之后光合作用速率不再增加，这是因为光反应的产物有限。在冷害温度下，植物在光合速率明显下降，例如番茄叶片，经16小时1℃冷处理，在大气的二氧化碳水平下，其光合速率下降达67％。

The light saturation points, compensation points and dark respiration rates of T. media cv.Hicksii seedlings go down while the contents of chlorophyll and the ratios of chlorophyll a and b increase along with the weakening of light intensity of the growing environment, but their CO2 compensation points and photorespiration rates go up.

The net photosynthetic rate, dark respiration rate, ribulose-1,5-bisphosphate carboxlase (RuBPcase) activity, and chlorophyll content were analyzed.