福建农业学报2016，Vol.31Issue(12)：1323-1328,6.DOI:10.19303/j.issn.1008-0384.2016.12.012
丛枝菌根育苗基质对 Cd 胁迫下黄瓜幼苗生长及生理特性的影响
Effect of Arbuscular Mycorrhizal on Growth and Physiology of Cucumber Seedlings Under Cd-stress
摘要
Abstract
Effect of nursery substrates inoculated with arbuscular mycorrhizal on the growth and physiological characteristics of cucumber seedlings under Cd-stress was studied.Two levels of Cd,i.e.,0.2 and 0.4 mmol· L-1 ,were artificially imposed on the substrate during the experimentation for observation.The results showed that the growth,photosynthesis and photosynthetic activity of the seedlings were inhibited,while the antioxidant enzymatic activities increased significantly under the Cd-stresses.The inhibitions were more pronounced with higher addition ofCd. On the other hand, with the aid of arbuscular mycorrhizal, the leaf area, root activity and underground dry weight of the seedlings cultivated under the Cd-stress increased dramatically.Meanwhile,Pn,Gs and Tr improved significantly,Ci decreased significantly,Fv/Fm,ETR,qP and фPSII improved significantly,and NPQ decreased significantly;while,the activities of POD and CAT were enhanced,and the O ·-2 producing rate and MDA content decreased.It appeared that arbuscular mycorrhizal could alleviate the growth inhibition effects and decrease the damage to the photosynthetic system on the cucumber seedlings due to Cd-stress,especially,when the stress was less severe at a low level,such as 0.2 mmol·L-1 .关键词
黄瓜/丛枝菌根基质/Cd 胁迫/生长/光合作用/叶绿素荧光参数/活性氧代谢Key words
cucumber/substrates with arbuscular mycorrhizal/Cd-stress/growth/photosynthesis/chlorophyll fluorescence parameters/metabolism of reactive oxygen species分类
农业科技引用本文复制引用
吴晓蕾,李潘,张艳芳,贾匆匆,武琳琳,张宏僖,高洪波..丛枝菌根育苗基质对 Cd 胁迫下黄瓜幼苗生长及生理特性的影响[J].福建农业学报,2016,31(12):1323-1328,6.基金项目
河北农业大学大学生创新训练计划项目(2015076) （2015076）
河北农业大学青年科学基金项目(QN201313) （QN201313）
