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EFFECTS OF SELECTED PHYSICOCHEMICAL FACTORS ON GROWTH AND ZOOSPOROGENESIS OF CLADOPHORA GLOMERATA (CHLOROPHYTA) 1
Author(s) -
Hoffmann James P.,
Graham Linda E.
Publication year - 1984
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1984.00001.x
Subject(s) - biology , photoperiodism , botany , dry weight , light intensity , horticulture , zoology , optics , physics
The effects of vitamin B 1 and B 12 , temperature, light intensity and photoperiod on dry weight production and zoosporogenesis of Cladophora glomerata (L.)Kütz. were investigated by factorial experiments. Statistical analysis showed all of the above factors to be significantly (P < 0.01) influenced by these two parameters. Zoosporogenesis appeared to be more sensitive to vitamin limitation than dry weight production. Dry weight production and zoosporogenesis exhibited significantly different maxima. Dry weight production was most strongly influenced by temperature whereas photoperiod exerted the strongest influence on zoosporogenesis. It was possible to experimentally separate the light intensity and photoperiod factors; analysis showed photoperiod to be the primary factor influencing zoosporogenesis. Among the conditions tested, an 8:16 h LD short day photoperiod elicited the greatest number of zoosporangia.