6种豇豆属植物耐盐性评价及光合特性研究  

Evaluation of Salinity Tolerance and Effects of Salt Stress on Photosynthetic Characteristics in Six Species Plants of Vigna

作　　者：冯宇 周颜 杨虎彪[2] 陈志坚[2] 刘攀道[2] 石磊[3] 白昌军[2] 刘一明 刘国道[2] FENG Yu;ZHOU Yan;YANG Hubiao;CHEN Zhijian;LIU Pandao;SHI Lei;BAI Changjun;LIU Yiming;LIU Guodao(College of Agro-grassland Science,Nanjing Agricultural University,Nanjing,Jiangsu 210095,China;Institute of Tropical Crop Genetic Resources,Chinese Academy of Tropical Agriculture Sciences /Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China,Ministry of Agriculture,Danzhou,Hainan 571737,China;Shanghai Pudong New Area Agricultural Technology Promotion Center,Shanghai 201201,China)

机构地区：[1]南京农业大学草业学院,江苏南京210095 [2]中国热带农业科学院热带作物品种资源研究所/农业部华南作物基因资源与种质创制重点实验室,海南儋州571737 [3]上海市浦东新区农业技术推广中心,上海201201

出　　处：《热带作物学报》2018年第12期2410-2420,共11页Chinese Journal of Tropical Crops

基　　金：中国热带农业科学院基本科研业务费专项资金(No.1630032017085);海南省自然科学基金(No.318MS101);中国南方草地牧草资源调查(No.2017FY100600);农业部国际交流与合作项目"‘一带一路’沿线国家热带农业资源联合调查与开发评价"(No.ZYLH2018010103)

摘　　要：采用沙培方法,研究盐胁迫(300 mmol/L)对6种豇豆属植物幼苗生长及光合特性的影响。结果表明:(1)盐处理6 d后,贼小豆的叶绿素(Chlorophyll,Chl)含量显著降低,叶片相对含水量(Relative Water Content,RWC)、质膜透性(Electrolyte Leakage,EL)和枯叶率(Withered Leaf Rate,WLR)显著增加,而滨豇豆均没有显著差异;主成分分析、相关分析及隶属函数分析结果表明,WLR与EL呈极显著正相关,RWC、Chl含量呈显著负相关;主成分分析得到2个主成分PC1和PC2,可以解释总变化的92.75%;隶属函数排名表明,滨豇豆的耐盐能力最好,贼小豆最差。(2)滨豇豆的净光合速率(Pn)、胞间CO2浓度(Ci)、气孔导度(Gs)、蒸腾速率(Tr)、PSⅡ最大光化学效率(Fv/Fm)和最大荧光产量(Fm)、PSⅡ非调节性能量耗散[Y(NO)]均没有显著差异,而贼小豆除Y(NO)显著增加外,其余均显著降低。The effects of NaCl stress on the seedling growth and physiological properties of Figna were investigated in the study.After 6 d of salt treatment,the chlorophyll content of the V..minima (Roxb.)Ohwi et Ohashi decreased, whereas RWC,electrolyte leakage (EL)and withered leaf rate significantly increased.Principal component analysis and correlation analysis of the four indexes were carried out.The results showed that RWC and chlorophyll content were negatively correlated with WLR,whereas WLR was positively correlated with EL.Two principal components PC1 and PC2 were accounted for 95.23% of the total change.E marina had the best salt tolerance,whereas V.minima (Roxb.) Ohwi et Ohashi.had the worst tolerance.The photosynthesis rate (Pn),intercellular CO2 concentration (Ci),stomatal conductance (Gs),transpiration rate (Tr),the maximum photochemical efficiency (Fv/Fm)and the maximum fluorescence yield (Fm)of the E minima (Roxb.)Ohwi et Ohashi decreased from those of the control.Y(NO)significantly increased.They were not significantly different in V.marina.

关 键 词：盐胁迫 滨豇豆 生理特性 光合作用 叶绿素荧光 

分 类 号：S643.4[农业科学—蔬菜学]