光照强度和温度对智利江蓠生长及生化组分的影响  

Effects of Different Light Intensities and Temperatures on Growth and Chemical Constituents of Gracilaria Chilensis

作　　者：陈伟洲[1] 钟志海[1] 刘涛[2] 黄中坚 赖学文 

机构地区：[1]汕头大学海洋生物研究所,广东汕头515063 [2]中国海洋大学海洋生命学院,山东青岛266003 [3]汕头市海洋与水产研究所,广东汕头515041

出　　处：《海洋湖沼通报》2015年第1期28-34,共7页Transactions of Oceanology and Limnology

基　　金：国家海洋高技术研究发展计划(2012AA10A411);广东省科技计划项目(2012B091100394);广东省汕头市科技计划项目(E201300061)资助

摘　　要：以智利江蓠(Gracilaria chilensis)为实验材料,分别研究了智利江蓠在不同光照强度(20μmol·m-2·s-1,72μmol·m-2·s-1,108μmol·m-2·s-1,180μmol·m-2·s-1)和不同温度(12、15、18、21、24和27℃)条件下的生长及生化组分的变化。实验结果表明,最适合智利江蓠生长的光照强度为72μmol·m-2·s-1,温度为21℃。在适宜光照强度和温度条件下,智利江蓠不仅具有较高的生长速率(RGR),而且藻胆蛋白和可溶性蛋白(SP)含量也相应的达到最高值,而丙二醛(MDA)的含量却降到最低值,说明智利江蓠受到外界的胁迫较低。可溶性糖(SS)的含量随着光强的升高而增加,在21℃条件下出现最低值。总体来说,智利江蓠适合在低光照强度和适中温度条件下生长。The main effects of different light intensities（20μmol·m^-2·s^-1,72μmol·m^-2·s^-1,108μmol·m^-2·s^-1,180μmol·m^-2·s^-1）and temperatures（12℃,15℃,18℃,21℃,24℃,27℃）on the growth and levels of chemical constituents of Gracilaria chilensis were studied under labortary conditions.It was found that the optimum environmental factors for the growth of Gracilaria chilensis were the light intensity 72μmol·m^-2·s^-1 and temperature 21℃.Under suitable conditions,Gracilaria chilensis not only had the maximum relative growth rate（RGR）,and more contents of phycobiliprotein and soluble proteins,but less contents of malondialdehyde（MDA）,indicating that Gracilaria chilensis less suffered from the environmental stresses.The contents of soluble sugar increased with the increase in light intensity.In temperature experiment,less contents of soluble sugar occurred at 21℃.In a word,Gracilaria chilensis grew well under lower light intensity and medium temperature.

关 键 词：智利江蓠 光照强度 温度 生长 生化组分 

分 类 号：S968.43[农业科学—水产养殖]