海水对冰菜生长、营养品质影响及叶片多胺物质耐盐响应  

Effect of Seawater on Growth and Nutrient Quality of Mesembryanthemum crystallinum L. and Salt Tolerance Response of Polyamines in Leaves

作　　者：段瑞军[1] 吴朝波[1,2] 王军 黄圣卓[1] 梅文莉[1] 戴好富[1] DUAN Rui-jun;WU Chao-bo;WANG Jun;HUANG Sheng-zhuo;MEI Wen-li;DAI Hao-fu(Institute of Tropical Bioscience and Biotechnology,China Academy of Tropical Agricultural Science,Haikou 571101,China;Hainan Zheng He vocational training school,Haikou 571101,China)

机构地区：[1]中国热带农业科学院热带生物技术研究所,海南海口571101 [2]海南正和职业培训学校,海南海口571101

出　　处：《江西农业大学学报》2019年第5期881-889,共9页Acta Agriculturae Universitatis Jiangxiensis

基　　金：海南省自然科学基金项目(318MS094);农业农村部财政专项(NFZX2018);热带特色高效农业产业专项资金(第一批)(琼财农[2017]1478);中国热带农业科学院基本科研业务费—南药产业技术创新团队项目(17-CXTD-15);现代农业产业技术体系建设专项资金项目(CARS-21)~~

摘　　要：为探究不同海水对冰菜生长、营养品质的影响及多胺对海水的响应,通过盆栽试验,研究了在海水浓度(20%,30%,40%,50%,60%)处理下,冰菜生长、营养品质及多胺含量的变化情况。结果表明:当海水浓度≤30%时,海水对冰菜株高、根长、叶片数、叶面积及生物量影响较轻,当海水浓度≥40%时,各生长指标开始受到不同程度的抑制;冰菜营养种类和含量丰富,当海水浓度≤40%时,冰菜各项营养指标影响较小,其中总黄铜含量>0.05 mg/g,EAA含量>8.22 mg/g;多胺在海水胁迫表现为随海水浓度的增加亚精胺、精胺含量明显增加,腐胺含量减少,能够对海水胁迫作出积极响应。冰菜中营养成分丰富,当海水浓度≤30%时,可以保障冰菜产量与营养品质;多胺是提高冰菜耐盐性的重要生理指标。The effect of seawater on the growth and nutrient quality of M.crystallinum L.and the response of polyamines in its leaves to seawater was explored by pot experiment.The changes in the growth,nutrient quality of and polyamine contents of M.crystallinum L.were inqired by various concentrations of seawater(20%,30%,40%,50%,60%).The results showed that,when the concentration of seawater≤30%,the effects on height,root length,number of leaves,leaf area and biomass of M.crystallinum L.were relatively slight.when the concentration of seawater amounted to 40%,the growth indexes were inhibited with various degrees,while the nutritional species and contents were abundant.When the concentration of seawater was less than 40%,the nutritional indexes were slightlg influenced,the contents of total flavonoids were>0.05 mg/g,the contents of EAA were>8.22 mg/g.With the increase of seawater concentration,the contents of spermidine and spermine increased significantly,while that of putrescine decreased,which could respond positively to seawater stress.Conclusion M.crystallinum L.has abundant nutritional components.The yield and nutritional quality can be guaranteed when the concentration of seawater is less than 30%,and polyamine is an important physiological index to improve salt tolerance of M.crystallinum L.

关 键 词：冰菜 海水胁迫 营养 多胺 

分 类 号：S636[农业科学—蔬菜学] Q945.78[农业科学—园艺学]