摘要
[Objective]The experiment aimed to explore a new way for observing surface structure of Nostoc sphaeroides Kutzing. [Method] The scanning electron microscope was used to observe the epidermal ultrastructure of wild and cultured Nostoc sphaeroides Kutzing. [ Result] The epidermis of wild and cultured Nostoc sphaeroides Kutzing showed mixture structure of fibril colloid which was reticular arranged. The difference between wild and cultured Nostoc sphaeroides Kutzing was that the outer epidermis of cultured Nostoc sphaeroides Kutzing had trichome distribution but the wild Nostoc sphaeroides Kutzing did not has such distribution. The obsevation results of under smaller than 10 μm by scanning electron microscope was touched thick and showed many folds and distortions. [ Conclusion] The scanning electron microscope was an effective way to study development of Nostoc sphaeroides Kutzing colony and it was worth popularizing.
近年来由于全球气候变化和土壤生态环境改变等原因导致葛仙米产量大大降低。现已有葛仙米室内规模批量培育生产，但室内培养的葛仙米在生长过程中容易发生破裂，且其群体韧性要比野生葛仙米群体弱、其所含蛋白质与维生素含量均比野生葛仙米低。因此，笔者运用扫描电子显微镜（SEM）观察野生葛仙米和室内规模葛仙米表层结构，了解两者的区别，同时为葛仙米表层结构观察找寻新方法。
