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缢江蓠生长率及其生化组分含量分析
作者: 王艳平 谢恩义* 黄翔鹄 孙立伟     
单位: (广东海洋大学 水产学院 广东 湛江 524088) 
关键词: 缢江蓠 温度 光照强度 盐度 生长 生化组分 
分类号:S968.434
出版年,卷(期):页码:2017,48(6):1099-1105
摘要:

【目的】明确缢江蓠(Gracilaria salicornia)的最适宜生态条件,为其人工栽培提供参考依据。【方法】通过室内单因子试验设计,探讨不同温度、光照强度及盐度对缢江蓠生长率、叶绿素a(Chla)、类胡萝卜素(Car)、藻红蛋白(R-PE)、藻蓝蛋白(R-PC)、可溶性蛋白、超氧化物歧化酶(SOD)、丙二醛(MDA)变化的影响。【结果】缢江蓠的适宜生长温度为24~32 ℃,最适生长温度为28 ℃;适宜生长光照强度为3000~9000 lx,最适生长光照强度为6000 lx;适宜生长盐度为20‰~35‰,最适生长盐度为30‰。在适宜的环境条件下,缢江蓠藻体具有较高的生长率,其藻胆蛋白和可溶性蛋白含量较高,MDA含量较低,但SOD活性较高,即受环境胁迫较小,受氧化胁迫较大。【结论】缢江蓠具有能适应高温、低光照强度及中、高盐度环境条件的特性,可在我国南方海域夏季自然条件下栽培生产。

【Objective】The most suitable ecological environment for Gracilaria salicornia growth was researched in order to provide reference for its artificial cultivation. 【Measure】Effects of temperature, light intensity and salinity on variation of growth rate, chlorophyll a(Chla), carotenoid(Car), phycoerythrin(R-PE), phycocyanin(R-PC), soluble protein, superoxide dismutase(SOD) and malondialdehyde(MDA) were analyzed by indoor single factor experiment. 【Result】The suitable growth temperature for G. salicornia was 24-32 ℃, and the optimum temperature was 28 ℃; the suitable light intensity was 3000-9000 lx, and the most suitable light intensity for growth was 6000 lx; the suitable salinity was 20‰-35‰ and the optimum salinity for growth was 30‰. Under the suitable conditions, growth rate of G. salicornia was high. And it contained high phycobiliprotein, soluble protein and SOD contents, low MDA content. It was inferred that G. salicornia suffered less from environment stree than oxidative stress. 【Conclusion】G. salicornia can adapt to the environment conditions of high temperature, low light intensity and medium-and-high salinity. Therefore, it can be cultured naturally in summer in the southern sea area of China.

基金项目:
国家海洋局科学基金项目(A14367);国家海洋公益性行业科研专项项目(201505028);广东海洋大学“海之帆—起航计划”大学生科技创新项目(hzfqhjhkjfm2015b16)
作者简介:
*为通讯作者,谢恩义(1966-),博士,教授,主要从事海藻栽培研究工作,E-mail:xieenyi@163.com。王艳平(1987-),研究方向为海洋环境与生物资源保护,E-mail:287496565@qq.com
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