野生天全凤仙叶片光合特性探析

目地]揭示野生天全凤仙光合作用的基本生理生态学特征和规律,分析其生长的适宜生态条件,为其园林应用提供理论指导。方法]采用Li-6400便携式光合仪测定野生天全凤仙叶片的有关光合参数,研究了光合作用日变化的特征、影响因子与光合特性之间的关系,以及光补偿点与光饱和点。结果]野生天全凤仙光合速率日变化呈单峰型,最大光合速率为10.99μmol/（m^2·s）。光合速率与气孔导度之间呈正相关,与胞间CO2浓度呈负相关。叶片光补偿点为13μmol/（m^2·s）,光饱和点为500μmol/（m^2·s）,表观量子效率为0.0549。结论]野生天全凤仙的光合特性表明其为典型的耐阴植物。

Preliminary Research on the Photosynthetic Characteristics of the Garden Balsam Leaf

Objective]The theory guidance for the application of horticulture in landscape was provided through the exploration of the basic photosynthetic characteristics of garden balsam(Impatiens tienchuanensis Y.L.Chen in Acta Phytotax.Sin) and analysis of its suitable ecological condition.Method]The relevant photosynthetic parameters of the plant was measured with portable Photosynthesis System(Li-6400).The character of the daily variation of photosynthesis,its relationship with affecting factor,the light compen...