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KMID : 0613820030130030359
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Journal of Life Science
2003 Volume.13 No. 3 p.359 ~ p.364
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Characteristics of Sexual Maturation in the Seaweed Porphyra pseudolinearis from East Sea, Korea
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Kim Young-Dae
Kim Hyung-Geun
Lee Chu
Hong Yong-Ki
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Abstract
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The seaweed Porphyra pseudolinearis as a dominant species grows at upper of the intertidal zone of the East Sea from October to March. Vegetative cells have not matured during October when observed with naked eye and microscope. In the middle of November, although it didn`t distingush between female and male gametophytes by eye, it showed antheridium and carpogonium when observed vertical section under microscope. From early December, It could be distinguished female and male gametophytes clearly. From Feburary it showed shorted length of thalli by release of spermatangia and carposporangia as maturation. At early March, the colar has been decaeded and side of thalli has been melted, completed of release of spermatia. At the end of December, the average length and width of female thalli were 149.9±5.6mm and 22.2±2.3mm, respectively. The length and width of male thalli were 149.9±9.4mm and 20.7±1.8mm. At the end of January, the average length and width of female thalli were 94.6±6.4mm and 29.1mm±5.1, respcetively. The length and width of male thalli were 107.8±7.3mm and 25.9±0.9mm. From this period lengths of female and male thalli have already been shortned by the release of spermatia and carpogonia.
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KEYWORD
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carposporangia, maturation, Porphyra pseudolinearis, seaweed, spermatangia, thallus length, thallus width
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