摘要:
通过测定虎尾兰、吊兰、袖珍椰子、白鹤芋、常春藤的光合特性生理指标和叶片中甲醛含量,分析探讨植物修复甲醛周期性生理。试验结果表明:植物体内甲醛含量日动态变化表现为植物体内甲醛含量8:00左右最高,随着时间的推移下降,至12:00左右最低,下午随着时间的推移逐渐上升。与光合特性的关系表现为随着净光合速率（Pn）、蒸腾速率（Tr）、胞间CO2浓度（Ci）、气孔导度（Gs）的提高而降低,随着它们下降而上升;随着气孔限制值（Ls）的下降而降低,提高而上升;水分利用效率（WuE）对植物体内甲醛含量日动态变化趋势影响不明显。植物体内甲醛日平均含量随着光合特性的变化而呈现出起伏波动性,偏回归、相关分析表明虎尾兰叶片中甲醛含量与Tr、Ls、Ci相关,偏相关达到极显著;吊兰叶片中甲醛含量与Pn、Ls、Ci偏相关极显著,与Gs偏相关显著;袖珍椰子叶片中甲醛含量与Pn、Gs、WuE偏相关极显著,与Ls、Ci偏相关显著;白鹤芋叶片中甲醛含量与Tr、Pn、Gs偏相关极显著,与Ci、WuE偏相关显著;常春藤叶片中甲醛含量与Tr、Ci、Gs偏相关极显著,与Pn、Ls偏相关显著。由此可见,植物修复甲醛的周期与植物光合作用生理相关。
Abstract:
Through the determination of photosynthetic characteristics physiological indexes and formaldehyde content in leaves of Sansevieria thunb,Chlorophytum comosum,Chamaedorea elegans,Spathiphyllum floribundum and Hedera helix,the periodic physiology of phytoremediation for formaldehyde was analyzed and discussed.The result showed that: the diurnal variations of formaldehyde content in plants presented as that achieved the highest at about 8:00,then gradually decreased with the lapse of time,and reached the lowest at about 12:00,after gradually increased with the time expand.The relationship with photosynthetic characteristics manifested as that with the improving of Pn,Tr,Ci,Gs declined and the reducing ascended,with the reducing of Ls declined and the improving ascended,and the effect of WuE on the diurnal variations of formaldehyde content in plants was not obvious.With the changing of photosynthetic characteristics,the daily average content of formaldehyde demonstrated wave properties.The partial regression and correlation analysis showed that the formaldehyde content in leaves of Sansevieria thumb was related to Tr,Ls,Ci,with the partial regression very significant;the formaldehyde content in leaves of Chlorophytum comosum had relation to Pn,Ls,Ci of partial regression very significant,and Gs of significant;the formaldehyde content in leaves of Chamaedorea elegans was related to Pn,Gs,WuE,with the partial regression very significant,while Ls,Ci significant;the formaldehyde content in leaves of Spathiphyllum floribundum had relation to Tr,Pn,Gs of partial regression very significant,and Ci,WuE of significant;the formaldehyde content in leaves of Hedera helix was related to Tr,Ci,Gs,with the partial regression very significant,while Pn,Ls significant.It can be seen that the period of phytoremediation for formaldehyde was related to photosynthetic physiology of plants.
百度学术
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