Pleomorphism in Selected Genera of Algae Page: 14
vi, 79 leaves : ill.View a full description of this thesis.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
14
variation in size and shape of heterocysts i.r. nine species
of Anabaena by varying the amount of light, : the presence
and concentrations of certain salts, or by is clucing an oxygen
deficiency. By varying the light intensity, Jaag (61) found
that color, trichome characters, sheath formation, branching,
and heterocyst formation could be altered in Scvtonema polv-
morphum. Variation in concentration of certain salts caused
alteration in filament or thallus structure in species of
Anabaena, Cylindrosperma, Nostoc, Oscillatoria. Phormidium,
Scytonema, and Chroococcus (31). Naumann (71), in studying
Microcystis aeruginosa Kutz, found that when grown in still
water, large clathrate colonies lacking matrix were formed;
whereas in agitated water, small, non-clathrated colonies with
matrix and closely attached cells were formed. Kingsbury (63)
reported loss of color in Plectonema to result from exhaustion
of nitrogen and return of color with addition of nitrogen.
Drouet and Daily (37), in studying Gloeocapsa montana, came
to believe that this blue-green alga was actually a member of
the Chlorophycean genus Palmoqloea protuberans (Sm. and Sowerb.)
Kutzing. Drouet (35, 36) found sufficient variation in (1) pres-
ence and nature of sheath, (2) calcification, (3) terminal
cell morphology, and (4) granulation of cell content to merit
Upcoming Pages
Here’s what’s next.
Search Inside
This thesis can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Thesis.
Bruton, Barbara A. Pleomorphism in Selected Genera of Algae, thesis, June 1967; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc163903/m1/20/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .