Results 211 to 220 of about 21,921 (267)
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Morphology of Acanthophora nayadiformis (Ceramiales, Rhodophyta)
Phycologia, 2002Acanthophora nayadiformis is a perennial species of red alga that overwinters by means of a rhizomatous prostrate system; both reproductive and vegetative plants are also able to spread by means of specialized vegetative propagules that have never been reported in other Acanthophora species.
Cecere E, Perrone C
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Vegetative reproduction by multicellular propagules in Rhodophyta: an overview
Marine Ecology, 2011This paper deals with vegetative reproduction by multicellular propagules in Rhodophyta. An extensive examination of the relevant literature shows that this phenomenon in Rhodophyta is not well known. A propagule is here defined as a vegetative multicellular structure which spontaneously detaches from the parent thallus and gives rise to a new ...
Antonella Petrocelli
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Studies on the Sarcomenia group of the Rhodophyta
Australian Journal of Botany, 1959A study of species placed in the genus Sarcomenia, and study of allied genera, shows that Sarcomenia includes one species only. S. delesserioides Sonder. Other species belong either to Platysiphonia Boergesen or to Sarcotrichia gen. nov. The Australian Polysiphonia roeana is shown to belong to the Sarcomenia group and is placed in a new genus ...
EA Shepley, Hbs Womersley
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Abteilung Rhodophyta (Rotalgen)
1987Den Rotalgen fehlt eine nahere Verbindung zu den anderen Abteilungen. Sie sind uberwiegend marin und kommen vor allem in groseren Tiefen, bis zu 200 m, vor. Die Zellwand enthalt Zellulose und Pektin. Das letztere dominiert. Pektinartige Stoffe werden technisch verwendet (Agar, Carrageen, vgl. S. 32).
Meinrad Küttel, Gertrud Dahlgren
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Sterols of the amansieae (rhodomelaceae: Rhodophyta)
Phytochemistry, 1984Abstract Osmundaria prolifera, kuetzingia natalensis, Halopythis pinastroides and Vidalia fimbriata contain C 27 sterols as the major sterols. Six other species of the Amansieae, belonging to the genera Amansia, Vidalia, Lenormandia and Rythiphlaea, contain C 28 -sterols as the major sterols.
Combaut, Georges, Saenger, Peter
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Gracilaria (Gigartinales, Rhodophyta) and productivity
Aquatic Botany, 1986Gracilaria is a genus with a large number of species, many of which have been utilized for a variety of purposes. The chaotic state of the intraspecific taxonomy is a major deterrent in relating information and studying this genus. The majority of species occur in warm-water and tropical habitats, although the greatest standing stocks, usually as free ...
J. McLachlan, C.J. Bird
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Systematics of red algae (Rhodophyta)
Critical Reviews in Plant Sciences, 1986Red algal systematics is in a state of flux unparalleled since the early decades of this century. Ultrastructural and biochemical studies are providing features for a revised classification at ordinal and supraordinal ranks, whereas characters of vegetative and reproductive morphology continue to establish discontinuities among taxa at lower ranks ...
Paul W. Gabrielson +2 more
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Cellulose in the Cell Walls of the Bangiophyceae (Rhodophyta)
Science, 1980Mechanically isolated cell walls of the conchocelis phase of Bangia fuscopurpurea yield cellulose II (regenerated cellulose) upon treatment with Schweitzer's reagent. X-ray powder analysis and thin-layer chromatography of partial hydrolyzates confirm the presence of cellulose in this extract.
Milton R. Sommerfeld +2 more
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Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)
Botanica Marina, 2002Alsidium corallinum C. Agardh from the Mar Grande of Taranto (Ionian Sea, Mediterranean Sea) reproduced primarily by propagules. These were starch- filled branchlets subtended by little-pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 Ým.
Cecere E, Saracino OD, Petrocelli A
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Botanica Marina, 2016
Abstract Epiphytism is a major problem world-wide for the Gracilaria mariculture industry that reduces the productivity of commercial farms. Most of the epiphytes associated with Gracilaria chilensis belong to the order Ceramiales. Under laboratory conditions we studied the infection process of Ceramium rubrum rhizoids on G.
Michetti, Karina Mariel +3 more
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Abstract Epiphytism is a major problem world-wide for the Gracilaria mariculture industry that reduces the productivity of commercial farms. Most of the epiphytes associated with Gracilaria chilensis belong to the order Ceramiales. Under laboratory conditions we studied the infection process of Ceramium rubrum rhizoids on G.
Michetti, Karina Mariel +3 more
openaire +3 more sources