English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The genus Pancratium, by the latest revision of the family AmaryUidaceae (Hepper 1968), is represented by P. hirtum A. Chev. and P. trianthum Herb . Morton ( 1965) produced a well documented taxonomic report on the two species. P. hirtum inhabits a variety of ecologic nicÍles in the Savanna vegetation zone in Nige ria, where representatives were observed to demostrate minor but obvious morphological differences. In the interphase nucleus, much of the heterochromatin is situated in close asso ciation with the peripheral contents of the nucleus. In addition to these small peripheral clumps of deeply stained materials, the nucleus contains a larger central or eccentrically placed nucleolus which also has affinity for basic dyes. Initial confusion of the nucleolus with promi nent clumps of chromatin persisted until the development of improved staining methods, which consistently showed that it differed from chromatin in its staining affinities. In addition, the configuration of the nucleolus in any particular cell type is relatively consistent (Fawcett 1981) , hence, its usefulness in esta blishing relationship. With a special silver impregnation technique, Estable and Sotelo ( 1 95"i) and Femández Gómez ( 1969) found that nucleoli of many cell types staincd diffe rently from the other sorrounding constituents of the cell. Apart from the taxonomic studies carried out by Morton ( 1 965) on the two species of Pancratium and karyotypic variation studies conducted by Oyewole ( 1986) on popu lations of P. hirtum, there is very little informa tion on aspects of populations of P. hirtum in Nigeria. The present investigation was under-

Basic dye staining of the nucleolus in populations of Pancratium hirtum A. Chev. (Amaryllidaceae) in Nigeria