10份沿阶草种质资源不同遮阴处理对光合生理指标和气孔的影响研究  

Effects of Different Shading Treatments on Photosynthetic Physiological Indexes and Stomata of 10 Germplasm Resources of Lepidoptera japonicum

作　　者：何佳蕾 白史且 孙林 吕杰 李达旭[1] 鄢家俊[1] 常丹[1] 谢彩云 左相兵 张建波[1] He Jialei;Bai Shiqie;Sun Lin;Lv Jie;Li Daixu;Yan Jiajun;Chang Dan;Xie Caiyun;Zuo Xiangbing;Zhang Jianbo(Sichuan Academy of Grassland Sciences,Chengdu 611743,China;School of Life Science and Enginearing,Southwest University of Science and Teahnology,Mianyang 621010,China;Guizhou Pratacultural Research Institute,Guiyang 550006,China)

机构地区：[1]四川省草原科学研究院,四川成都611743 [2]西南科技大学生命科学与工程学院,四川绵阳621010 [3]贵州省草业研究所,贵州贵阳550006

出　　处：《草学》2023年第4期40-52,共13页Journal of Grassland and Forage Science

基　　金：四川饲草创新团队建设项目;财政部和农业农村部:国家现代农业产业技术体系(CARS-34);四川省科技支撑技术(2021YFYZ0013)共同资助。

摘　　要：试验以不同地区的10种沿阶草种质资源为研究对象,通过不同的遮阴程度处理,研究遮阴对光合特性、气孔指标的影响,采用隶属函数方法比较了种质材料间的耐阴性差异,筛选出了适合成都地区种植的耐阴性较好的沿阶草资源材料。结果如下:随着遮阴程度的逐渐增多,处理时间的逐渐增长,试验材料的生理指标的变化各不相同,其中叶绿素(Chl)含量会随着时间的增长而增加、PSⅡ(光系统Ⅱ)反映中心捕获激发光能的效率叶绿素荧光(Fv/Fm)值整体随着遮阴强度增加而增加;随着遮阴程度加强,耐阴性好的试验材料气孔密度增大,气孔指数变小;采用隶属函数分析,试验材料的耐阴性排序是:SAG-OJ-19004>SAG-LM-19001>SAG-SY-19005>SAG-DZ-19007>SAG-BJ-19006>SAG-DT-19009>SAG-OJ-19002>SAG-XJ-19008>SAG-OJ-19003>SAG-BQ-19010;结合隶属函数以及田间试验,本研究初步筛选出了适宜在成都地区栽培的耐阴型沿阶草3份,分别为SAG-OJ-19004(山麦冬)、SAG-LM-19001(金边阔叶麦冬)、SAG-SY-19005(细叶麦冬)。Tested with 10 along the order of different parts of the germplasm resources as the research object,through the different degree of shading treatment,the shade to shade of photosynthetic characteristics,the influence of the porosity index,subordinate function method compared the shadow resistance difference between germplasm materials,filter out the shadow resistance is better suitable for chengdu area production along the grass resource materials.The results are as follows:with shade degree increasing,the processing time of growing,test materials changes of physiological indexes of each are not identical,the content of chlorophyll(chlorophyll)will increase as the growth of the time,PSⅡ(light system Ⅱ)reflects the center capture excitation light energy efficiency(Fv/Fm)chlorophyll fluorescence value overall shade as the intensity increases;With the enhancement of shade degree,the stomatal density of the test material with good shade tolerance increases and the stomatal index decreases.By membership function analysis,the order of shade tolerance of test materials is:SAG-OJ-19004>SAG-LM-19001>SAG-SY-19005>SAG-DZ-19007>SAG-BJ-19006>SAG-DT-19009>SAG-OJ-19002>SAG-XJ-19008>SAG-OJ-19003>SAG-BQ-19010;Based on the membership function and field experiment,three shade tolerant plants were selected as sag-OJ-19004,SAG-LM-19001 and SAG-SY-19005,which were suitable for cultivation in Chengdu area.

关 键 词：沿阶草属 光合生理指标 气孔 

分 类 号：S688.4[农业科学—观赏园艺]