摘要
以葛仙米为原料,探讨了在实验室自养培养时电导率、pH、温度、N P等对葛仙米生物量的影响.测定结果为:葛仙米的生物量随着电导率的减小呈递增状态,但是当培养液电导率减小到320mΩ cm时,葛仙米生物量开始下降.pH过低或过高,均会影响葛仙米的生长及颜色,随pH升高,葛仙米自身的颜色会加深,直至pH升至7.5.随着Ca2+浓度的提高,葛仙米的生物量增加,当Ca2+浓度为0.032g L时,生物量达最高值.当ρN ρP为1 1时葛仙米的生长速度较快且生物量较高.确定葛仙米的最适培养条件为:温度10～30℃,pH为6～7.5,光照时间为每昼夜11h.
In this paper, using Nostoc sphaeroides as raw materials,the autotrophy of it in the lab succeeded. The influence of conduct-meter, pH, temperature, ρ_N/ρ_P, Ca^(2+) on the biomass of Nostoc sphaeroides were studied. The results are as follows:the biomass of Nostoc sphaeroides increased with the decreasing of conductmeter until 320mΩ/cm, the color of it deepened with the rising of pH, at the same time, Ca^(2+) and ρ_N/ρ_P have great influence on the biomass of it. All in all, the optimal condition was: temperature 10～30℃, pH 6～7.5, illumination time 11h.
出处
《湖北民族学院学报（自然科学版）》
CAS
2003年第4期14-17,共4页
Journal of Hubei Minzu University(Natural Science Edition)
基金
湖北省教育厅重点项目(2001A08008).
关键词
葛仙米
自养培养
生长条件
Nostoc sphaeroides
autotrophy
growing condition
