受控生态生保系统螺旋藻藻种筛选研究

以目前应用较多的7个螺旋藻品种为研究对象，采用摇床培养的方式，在光照强度为200μmol·m^-2·s^-1，光照周期为24h，培养温度为（30．0±1．0）℃的条件下进行培养，通过比较不同藻种的形态特征、生长速率、碳源利用率、营养组分、光合放氧特性以及耐电离辐射能力等指标，从中筛选出满足受控生态生保技术研究所需的螺旋藻藻种。实验结果表明，6号和7号藻种的各项指标比较突出，尤其是6号藻种，在生长速率、蛋白质等含量、光合放氧活性、以及抗辐射的能力表现更为突出，可作为今后受控生态生保技术研究中进一步研究对象和关键生物部件候选藻种。

Study on Selection of Spirulina for Controlled Ecological Life Support System

Seven different kinds of Spirulina served as the test subjects and they were cultured under the following conditions： the photosynthetically active radiation, 200.0 μmol. m^-2 . s^-1, the photoperiod, 24 h per day, and the temperature, 30.0 ± 1.0℃. The physiological characteristics of the seven kinds of Spirulina including the shape, growth rate, nutrition quality, photosynthetic activity and radiation proof capacity were studied in the experiment. By comparing the physiological charac- teristics, the optimal Spirulina were selected in order to select the optimal Spirulina for the Con- trolled Ecological Life Support System （CELSS）. Two kinds of Spirulina were selected （ No. 6 and No. 7） in terms of better performance in shape, growth rate, nutrition quality, photosynthetic activi- ty and radiation proof capacity, etc. They could be the candidate biological components in CELSS.