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不同植物功能叶片淀粉、蔗糖积累量及酸性转化酶、淀粉酶活性均存在显著差异.依叶片蔗糖与淀粉积累量比值可大体将测定的28种植物划分为以积累淀粉为主的粉叶植物,以积累蔗糖为主的糖叶植物和介于两者之间的中间类型植物.三类植物功能叶片淀粉积累量与淀粉降解酶活性均无显著相关,但糖叶及粉叶植物叶片蔗糖积累量与酸性转化酶活性呈显著负相关.不同植物叶片发育过程中,其叶片光合产物积累及相应降解酶活性表现出各具特色均不同变化趋势.典型糖叶植物水稻功能叶片酸性转化酶活性远低于典型粉叶植物大豆,而后者叶片傍晚淀粉积累量与相应降解酶活性明显相关.据此,文章讨论了蔗糖及淀粉降解酶对于植物叶片光合产物积累及运输所可能具有的调节作用.
There were significant differences in starch, sucrose accumulation, acid invertase and amylase activities among functional leaves of different plants.According to the ratio of sucrose to starch accumulation in leaves, the 28 kinds of plants could be divided into three types: The accumulation of sucrose-based sugar-leaf plants and the intermediate type between the two types of plant functional leaf starch accumulation and starch-degrading enzyme activity were not significantly correlated, but sugar and leaf foliage plant leaf sucrose accumulation And negatively correlated with the activity of acid invertase.During the leaf development of different plants, the accumulation of leaf photosynthetic products and the activity of corresponding degrading enzymes showed different trends with different characteristics.The activities of acid invertase in functional leaf of typical sugar leaf plants were much lower The accumulation of starch in the late leaves was significantly correlated with the activity of the corresponding degradative enzymes in the typical leafy plant soybean.Therefore, the regulation of sucrose and starch degrading enzymes on the photosynthate accumulation and transport in plant leaves was discussed.