不同光照强度下红毛五加光合及生理特性研究  

Study on photosynthesis and physiological characteristics of Acanthopanax giraldii on different light intensity

作　　者：陈玉锋[1,2] 黄旭峰 古锐[3] 钟世红[4] 魏晓东[3] CHEN Yu-feng1,2, HUANG Xu-feng1 , GU Rui3 , ZHONG Shi-hong4, WEI Xiao-dong3(1. Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; 2. Cangxi Count17 Bureau of Agricuhure, Guangyuan 628400, China; 3. Ethnomedicine College, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China; 4. Pharmacy College, Chengdu Medical College, Chengdt~ 610083, Chin)

机构地区：[1]成都中医药大学药学院,四川成都611137 [2]苍溪县农业局,四川广元628400 [3]成都中医药大学民族医药学院,四川成都611137 [4]成都医学院药学院,四川成都610083

出　　处：《中国中药杂志》2018年第5期926-933,共8页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金项目(81173476);四川省科技厅扶贫专项(2016NFP0038);四川省科技厅成果转化项目(13CGZHZX0303);四川省科技扶贫计划专项(2016NZYZF0005)

摘　　要：该文旨在研究红毛五加Acanthopanax giraldii Harms对不同遮阴强度的响应机制，以指导红毛五加的人工驯化栽培。以茂县栽培种群为研究对象，设立不同遮阴程度的处理组，分析各组的光合、生理、亚显微结构等差异来探究红毛五加对不同光强的响应机制。光照成为限制其光合速率的主要影响因素，对照（CK）组上午和下午时段P。的降低分别由气孔限制和非气孔限制因素造成；中度遮阴（A1）组和重度遮阴（A2）组在14：30后Pn的降低则是由非气孔限制因素造成。A1,A2组LSP，LCP，Rd明显低于CK组；A1，A2组的SS，SP含量低于CK组，A2组的Pro含量明显低于CK组，A1，A2组的SOD，POD活力较CK组高。A1，A2组自由基清除酶系统分别以CAT，POD活力相对较高；CK组叶绿体中淀粉粒增加而基粒减少。该文研究了大田栽培条件下红毛五加对不同遮阴的响应机制，为进一步提高其栽培适应性，保障产量与质量提供了参考。This article is aimed to study the response mechanism of Acanthopanax giraldii on different shading intensity to guide its artificial cultivation. The cultivated A. giraldii in Maoxian was used as the research object, set up different shading treatment groups, analyzed photosynthesis, physiology, submicroscopic structure to explore the response mechanism of A. giraldii to different light inten- sity. Light was the main influencing factor to photosynthetic rate. During morning and afternoon periods ,the P, of the CK group reduced by stomatal limitation and non stomatal limitation factors respectively. While during 14 ： 30--18：30 period, the Pn of A1 and A2 groups reduced by non stomatal limitation factors. LSP, LCP and Ra of A1 and A2 groups were significantly lower than those of CK group ;The content of SS and SP of A1 and A2 groups were lower than those of CK group. The content of Pro of CK group were significantly higher than those of group A2. The activities of SOD and POD of them was higher than that of CK group, CAT activity of A2 and POD activity of A2were relatively higher In their respective free radical scavenging system. Starch grain increased and base grana declined in the chlor- opalst of those group CK. The study results indicated that response mechanism of different shading conditions ofA. giraldii under field cultivation conditions, tts could effectively adapt to environmental changes of the home cultivation, which provided a reference for ensu- ring yield and quality.

关 键 词：红毛五加 遮阴 日光合变化 生理指标 响应机制 

分 类 号：S567.19[农业科学—中草药栽培]