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六十年代以来明确了大豆属于三碳(C_3)植物,具有明显的光呼吸作用。光呼吸作用是绿色组织在光下放出CO_2的生理过程。其氧化的底物乙醇酸是来自C_3途径。光呼吸作用能减低体内有机碳的积累,并消耗一定能量。虽然有些人认为在强光下,CO_2不足时或能排除过剩的同化力,而保护叶绿体免受损害,光呼吸可能是一种生理适应,但在光照下(白天),光呼吸是减低净光合速率的主要因素
Since the 1960s, it has been clarified that soybean belongs to C_3 plants and has obvious photorespiration. Photorespiration is the physiological process by which green tissue emits CO 2 under light. Its oxidized substrate glycolic acid is from the C_3 pathway. Photo respiration can reduce the accumulation of organic carbon in the body, and consume some energy. Although some people think that in strong light, when CO 2 is insufficient or can eliminate excess assimilation force and protect the chloroplast from damage, light respiration may be a physiological adaptation. However, under light (during the day), light respiration reduces net photosynthesis The main factor of the rate