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前言由表皮组织分化出来的气孔,是气体交换与水分蒸腾的主要器官。叶片光合作用所需的CO_2系通过气孔而到达叶肉细胞。因此不难设想,气孔开启程度的日变化也会影响到光合作用的日变化。津野(1965)曾经依据浸润法,就甘薯叶片气孔开启度与光合作用的关系,获得大体成正比的关系。多种作物的气孔密度与蒸腾强度、光合速率、干物质形成速率呈正相关。
Introduction The stomata that are differentiated from epidermal tissues are the major organs for gas exchange and water transpiration. The CO2 required for leaf photosynthesis reaches mesophyll cells through the stomata. Therefore, it is easy to imagine that the diurnal variation of stomatal opening will also affect the diurnal variation of photosynthesis. Tsuno (1965) has been based on infiltration method, the sweet potato leaf stomatal opening and photosynthesis relationship, get roughly proportional relationship. The stomatal density of many crops was positively correlated with the transpiration rate, photosynthetic rate and dry matter formation rate.