Effects of Colchicine on the Cell Division of a Colonial Green Algal FlagellateGonium PectoraleMuller

Autor:	R. Shyam, Y. S. R. K. Sarma
Rok vydání:	1976
Předmět:	Volvocales Multinucleate biology Cell division Polyploid Botany Genetics Gonium Ploidy Flagellate General Agricultural and Biological Sciences biology.organism_classification Metaphase
Zdroj:	Caryologia. 29:27-33
ISSN:	2165-5391 0008-7114
DOI:	10.1080/00087114.1976.10796646
Popis:	SUMMARYThe effects of colchicine on a colonial algal flagellate Gonium pectorale (Volvocales, Chlorophyceae) are recorded for the first time. While, lower concentrations up to 0.5% of colchicine do not produce any effects, 1.0% concentration of this alkaloid brings about contraction of chromosomes, accumulation of metaphase plates, polyploid nuclei, multinucleate cells and cell enlargement. At this concentration, increase in chromosome number is the outstanding effect, such increases ranging from partial doubling, to diploidy and tetraploidy. In none of the cases all the cells of colony seem to have been affected, since unaffected cells within the same colony showing normal chromosome number have been observed. The affected cells generally are observed not to divide further instead, they died.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8a7c7a6aac8b83041f596ff92f428017 https://doi.org/10.1080/00087114.1976.10796646 Zobrazit plný text záznamu