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The Effect of KHCO_3 on Photosynthesis of Eggplant Seedlings

机译：KHCO_3对茄子幼苗光合作用的影响

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The low concentration of CO_2 in the atmosphere is one of the main factors to restrict photosynthesis of C_3 plants. The effect of KHCO_3 on photosynthesis of eggplant seedlings was studied in order to improve photosynthesis of C_3 plants. The results showed that KHCO_3 could significantly enhance the photosynthetic rate of eggplant seedlings. 500 mg/L KHCO_3 was the most optimal concentration to improve photosynthetic rate of eggplant seedlings. KHCO_3 could increase light saturation point, CO_2 saturation point, carboxylase efficiency and lower CO_2 compensate point of eggplant seedlings. KHCO_3 could improve stomatal conductance and electron transport activity. There was phosphoenolpyruvate carboxylase (PEPC) in leaves of eggplant seedlings, but PEPC activity was low. KHCO_3 could improve ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) activity and PEPC activity. From impact factors, HCO_3~- could enhance photosynthetic rate. K~+ could raise stomatal conductance of eggplant seedlings. HCO_3~- could improve activity of PEPC. Both HCO_3~- and K~+ could increase Rubisco activity.
机译：大气中的CO_2的低浓度是限制C_3植物光合作用的主要因素之一。研究了KHCO_3对茄子幼苗光合作用的影响，以改善C_3植物的光合作用。结果表明，KHCO_3可以显着提高茄子幼苗的光合速率。 500 mg / l khco_3是提高茄子幼苗的光合速率最佳的最佳集中度。 KHCO_3可以增加光饱和点，CO_2饱和点，羧化酶效率和较低的CO_2补偿茄子幼苗。 KHCO_3可以改善气孔电导和电子传输活性。在茄子幼苗的叶片中有磷酸丙酮酸羧基酶（Pepc），但Pepc活性很低。 KHCO_3可以改善核糖糖-1,5-双磷酸羧酶/氧酶（Rubisco）活性和Pepc活性。从影响因素，HCO_3〜 - 可以提高光合速率。 K〜+可以提高茄子幼苗的气孔电导。 HCO_3〜 - 可以改善Pepc的活性。 HCO_3〜 - 和K〜+都可以增加Rubisco活动。

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