中国水产科学Issue(6)：1227-1235,9.DOI:10.3724/SP.J.1118.2014.01227
环境因子对瓦氏马尾藻生长及光合作用的影响
Effects of different environmental factors on growth and photosynt-hesis of Sargassum vachellianum
摘要
Abstract
We studied the effects of different temperatures, light intensity and salinity on the specific growth rate, dry weight, photosynthetic pigment content, and photosynthetic oxygen evolution in Sargassum vachellianum. Temperature, light intensity and salinity all had a significant effect on growth, photosynthetic pigment content, and photosynthetic oxygen evolution. The most suitable temperatures, light intensity and salinity for S. vachellianum were 15–20℃, 20–60 μmol·m–2·s–1and salinity 20–40, respectively. The optimal growth temperature and salinity was 20℃and 30, the maximum specific growth rate reaching 5.80%· d–1. When the temperature was above 25℃, or the light intensity was higher than 200 μmol·m–2·s–1, or the salinity was less than 10 or higher than 50, the blades would stop growing, become pale and soft, and then rot 2 weeks later. Sargassum vachellianum could accu-mulate more photosynthetic pigment when the temperature was between 10–20℃or the l i g ht intensity was at 20–60μmol·m–2·s–1 or the salinity was at 20–40. When S. vachellianum was cultured at 20℃, a light intensity of 100μmol·m–2·s–1, and salinity 30, photosynthetic oxygen evolution from the blades was highest, about 258.50μmol·mg–1·h–1. Compared with the lower light intensity, the higher light intensity inhibited photosynthetic oxygen evolution. The results provide a theoretical basis for cultivation and restoration of S. vachellianum.关键词
瓦氏马尾藻/环境因子/藻类生长/光合色素/光合作用/藻场修复Key words
Sargassum vachellianum/environmental factors/algal growth/photosynthetic pigments/photosy-nthesis/restoration of algal area分类
农业科技引用本文复制引用
张建伟,刘媛媛,吴海龙,霍元子,于克锋,何培民..环境因子对瓦氏马尾藻生长及光合作用的影响[J].中国水产科学,2014,(6):1227-1235,9.基金项目
国家海洋局公益性行业科研专项(201105008) （201105008）
国家科技支撑计划项目(2012BAC07B00) （2012BAC07B00）
