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光照强度、温度和盐度对鹿角沙菜生长及生化组分的影响
引用本文:陈伟洲,钟志海,金玉林,黄中坚.光照强度、温度和盐度对鹿角沙菜生长及生化组分的影响[J].南方水产,2014(2):48-53.
作者姓名:陈伟洲  钟志海  金玉林  黄中坚
作者单位:汕头大学海洋生物研究所,广东汕头515063
基金项目:广东省科技计划项目(20108020201015);广东省汕头市科技计划项目(2010-126,2011-161)
摘    要:以鹿角沙菜(Hypneacervicornis)为材料,分别研究了其在不同光照强度(2000lx、4000lx、7500lx、10000lx和15000lx)、不同温度(15℃、20℃、25℃、30℃和35℃)、不同盐度(5、10、15、20、25、30和35)下生长及生化组分的变化。结果显示,适合鹿角沙菜生长的光照强度为2000—4000lx,温度为20~30℃,盐度为20—35;最适合生长的光照强度为4000lx,温度为25℃,盐度为30,在此条件下藻体具有最高的相对生长速率(RGR),SOD活性最低。在光照强度4000~5000lx范围内随着光照强度的升高,可溶性蛋白(SP)、叶绿素a(Chl—a)和类胡萝卜素(Car)的质量分数降低,而藻红蛋白(PE)和藻蓝蛋白(Pc)的质量分数上升;在温度25~35℃、盐度30~35范围内随着温度、盐度的升高,可溶性蛋白、叶绿素a、类胡萝卜素、藻红蛋白和藻蓝蛋白的质量分数降低,说明适宜的温度和盐度有利于其生化组分积累。

关 键 词:鹿角沙菜  光照强度  温度  盐度  生长  生化组分

Effects of light intensity,temperature and salinity on growth and biochemical constituents of Hypnea cervicornis
CHEN Weizhou,ZHONG Zhihai,JIN Yulin,HUANG Zhongjian.Effects of light intensity,temperature and salinity on growth and biochemical constituents of Hypnea cervicornis[J].South China Fisheries Science,2014(2):48-53.
Authors:CHEN Weizhou  ZHONG Zhihai  JIN Yulin  HUANG Zhongjian
Institution:(Marine Biology Institute, Shantou University, Shantou 515063, China)
Abstract:We investigated the effects of different light intensities (2 000 lx, 4 000 lx, 7 500 lx, 10 000 lx, 15 000 lx) , tempera- tures (15 ℃, 20 ℃, 25 ℃, 30 ℃, 35 ℃)and salinities (5, 10, 15, 20, 25, 30, 35)onthe growth and biochemical constit- uents of Hypnea cervicornis. The suitable conditions for the growth of H. cervicornis were light intensity of 2 000 - 4 000 lx, 20 - 30 ℃ and salinity of 25 - 35 ; the optimum conditions were light intensity of 4 000 lx, 25℃ and salinity of 30, under which H. cervicornis obtained the maximum relative growth rate (RGR) and the lowest SOD activity. The contents of soluble protein (SP), chlorophyll a (Chl-a) and carotiniod (Car) decreased while those of phycoerythrin(PE) and phycocyanin(PC) increased with increasing light in- tensity within light intensity of 4 000 - 15 000 lx. Under conditions of 25 - 35 ℃ and salinity of 30 - 35, the contents of soluble pro- tein, chlorophyll a, carotiniod, phycoerythrin and phycocyanin decreased with increasing temperature and salinity, which indicates that optimum temperature and salinity can promote the accumulation of biochemical components of H. cervicornis.
Keywords:Hypnea cervicornis  light intensity  temperature  salinity  growth  biochemical constituent
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