• ALGAE
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• 제23권1호
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• pp.1-14
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• 2008

Forty-eight taxa of desmids belonging to Class Chlorophyceae (Order - Conjugales, Family - Desmidiaceae), collected from different aquatic habitats of Lalkuan, Kathgodam and Pantnagar areas of Uttaranchal state and Pilibheet district of Uttar Pradesh, which are regions of foothills of Western Himalaya, have been described. These taxa belongs to 5 genera viz. Closterium Nitzsch (6 spp., 5 var., and 2 forma), Euastrum Ehrenberg (1 var.), Staurastrum Meyen (2 spp., 1 var., 1 forma), Cosmarium Corda ex Ralfs (19 spp. and 10 var.), Pleurotaenium Naegeli (1 sp.). Staurastrum pseudopachyrhyncum Wolle (1884) is new record for desmid flora of India.

• 생태와환경
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• 제42권2호
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• pp.192-199
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• 2009

Freshwater green algae are one of the important sources of bioenergy in the future. Spirogyra is a conjugating filamentous zygnematacean green algal genus that is widely distributed worldwide with more than 400 species. Despite its widespread occurrence throughout the world, cytological studies of the genus have been limited. We investigated karyological features and chromosome numbers for seven Korean Spirogyra species. Most of the species examined in the present study showed significant karyological features, inner organization of nucleolus, heavily stainable nucleolar substance and the diffuse-centric nature of chromosomes, typical of the Conjugales. Chromosome number ranged from n=12 in S. varians to n=38 in S. africana. Aberrant cytokinesis resulted in binucleate and tetranucleate cells, which sometimes provide cytological explanation for different morphology and ploidal changes in clonal culture of Spirogyra or even different cells within the same filament. The present chromosome data also substantiates the earlier held assumption that aneuploidy must have been the chief driving force for speciation and evolution of the genus Spirogyra.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1998년도 한국생물과학협회 학술발표대회
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• pp.129.2-129
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• 1998

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