La^(3+)对室内观赏植物降醛能力及生理生化指标的影响  

Effect of La^(3+) on Absorptive Capacity to Formaldehyde and Physiological and Biochemical Indexes of Indoor Ornamental Plants

作　　者：闫生荣[1,2] 张跃群 花海蓉[1,2] 葛玉晴[3] 梁婵娟[3] 周青[3] 

机构地区：[1]南通农业职业技术学院环境与资源系,江苏南通226007 [2]江苏省农村环境污染防治工程技术研究开发中心,江苏南通226007 [3]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《云南农业大学学报（自然科学版）》2014年第3期463-467,共5页Journal of Yunnan Agricultural University:Natural Science

基　　金：江苏省2010年度高校"青蓝工程"优秀青年骨干教师培养对象资助项目[苏教师(2010)27号];江苏省2010年高等学校大学生实践创新训练计划项目[苏教高(2010)27号];江苏省农村环境污染防治工程技术研究开发中心资助项目[苏教科(2011)13号];南通市科技计划资助项目(DE2009006;S2009019)

摘　　要：采用熏蒸法考察稀土生物调节剂LaCl3对甲醛胁迫下4种室内观赏植物降醛能力的影响,从中筛选出LaCl3提升降醛能力最明显的观赏植物,并研究其甲醛抗性的生理生化机制。研究结果表明:分别喷施适宜剂量LaCl3后,4种室内观赏植物单位叶面积吸收甲醛能力均有所增强,但其提升效率不同:常春藤为15.16%,吊兰为4.72%,绿萝为19.75%,虎尾兰为7.68%,喷施LaCl3对绿萝降醛能力的提高效率最大;甲醛胁迫下,绿萝叶绿素含量降低了39.87%,质膜透性和MDA累积量分别增加了8.17%,56.92%,POD活性升高了11.32%;经LaCl3预处理后,较甲醛胁迫组,绿萝叶绿素含量降幅与质膜透性、MDA浓度增幅均变小,而POD活性增幅变大。Effect of LaCI3 on absorptive capacity to formaldehyde of four indoor ornamental plants was studied through fumigating in laboratory. Simultaneously, the indoor ornamental plant, which could significantly enhance the degradation capacity of formaldehyde, was screened out to study the physiological and biochemical mechanisms of formaldehyde resistance. Our results showed that the a- bility to absorb formaldehyde of four indoor ornamental plants, which was calculated by per unit leaf area, all enhanced after spraying by LaC13 of suitable concentration, but with different efficiency. The ability to absorb formaldehyde of Hedera nepalensis var. sinensis, Chlorophytum comosum, Scind- apsus aureun and Sansevieria trifasciata increased by 15. 16% , 4.72% , 19.75% and 7.68% , re- spectively. In the four indoor ornamental plants, the capacity to assimilate formaldehyde of S. aureun was greatly improved by spraying LaC13. When S. aureun was stressed by formaldehyde, chlorophyll content decreased by 39.87% , membrane permeability increased by 8.17% , MDA cumulative in- creased by 56.92% , and POD activity increased by 11.32%. However, compared the pre-spraying group with the no-spraying group under formaldehyde stress, the chlorophyll content of S. aureun re- duced less, membrane permeability and MDA cumulative both increased less, but POD activity in- creased more.

关 键 词：La3+ 室内观赏植物 降醛能力 生理生化指标 

分 类 号：S482.8[农业科学—农药学]