空心菜9份种质萌发期耐盐性筛选及评价  

Screening and Evaluation of Salt Tolerance of 9 Water Spinach Germplasm at Germination Stage

作　　者：黄晓龙 欧成川 刘晓丽[1] 黎秋芬 李真琴 李思彤 王俊宁 HUANG Xiao-long;OU Cheng-chuan;LIU Xiao-li;LI Qiu-fen;LI Zhen-qin;LI Si-tong;WANG Jun-ning(College of Coastal Agricultural Sciences,Guangdong Ocean University,Zhanjiang 524088,Guangdong China)

机构地区：[1]广东海洋大学滨海农业学院,广东湛江524088

出　　处：《亚热带植物科学》2023年第2期108-118,共11页Subtropical Plant Science

基　　金：广东海洋大学大学生创新训练项目(No.CXXL2021158);国家级农科教合作人才培养基地资助项目(No.GDOU2013040301);教育部卓越农林人才培养计划资助项目(园艺,No.GDOU2014041204)。

摘　　要：选取9个空心菜Ipomoea aquatica种质,用0、50、100、150、200 mmol·L^(–1) NaCl溶液对其种子进行萌发试验,测定发芽率、发芽势、发芽指数、活力指数等11个指标,利用主成分分析和聚类分析对空心菜种质资源进行耐盐性综合评价。结果表明,低浓度盐处理对部分空心菜品种萌发有促进作用,而高浓度盐处理对9个品种的萌发均具有显著的抑制作用。主成分分析将11个耐盐相关指标分为4个主成分,累计贡献率达89.509%;结合聚类分析,将9份空心菜种质耐盐性分为4种类型,三叉空心菜属于高耐盐品种,泰国空心菜和白俊柳空心菜(611)属于中等耐盐品种,揭阳种白骨柳叶空心菜、港种特白骨大叶空心菜(228)和台湾竹叶空心菜属于弱耐盐品种,白柳叶空心菜(8012)、青梗柳叶空心菜和泰美柳叶青梗空心菜属于盐敏感品种。In this study,9 water spinach(Ipomoea aquatica)germplasm resources were selected,and their seeds were treated with 0,50,100,150,200 mmol·L^(–1) NaCl.The germination rate,germination potential,germination index and vigor index were measured.The salt tolerance of water spinach germplasm resources was comprehensively evaluated by principal component analysis and cluster analysis.The results showed that low concentration salt treatment promoted the germination of some varieties,while high concentration salt treatment significantly inhibited the germination of 9 varieties.Principal component analysis divided 11 salt tolerance related indicators into 4 principal components,with a cumulative contribution rate of 89.509%.Combined with cluster analysis,the salt tolerance of 9 water spinach germplasm was divided into 4 types.‘Sancha’was a high salt-tolerant variety.‘Taiguo’and‘Baijun’belonged to medium salt-tolerant varieties;‘Jieyang’,‘Gangzhong’and‘Taiwan’belonged to weak salt tolerant varieties.‘Bailiu’,‘Qinggeng’and‘Taimei’were salt sensitive varieties.

关 键 词：空心菜 芽期 盐胁迫 耐盐鉴定 主成分分析 聚类分析 

分 类 号：S63[农业科学—蔬菜学]