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タイトル: Morphological characteristics of Porphyra collected from Hua Hin, Thailand
著者: Ogawa, Hisao
Kaneko, Akira
Kaewsuralikhit, Chatcharee
Lewmanomont, Khanchanapaj
キーワード: morophology
macroalgae
Porphyra
Thailand
発行日: 2006年4月28日
出版者: International Coastal Research Center, Ocean Research Institute, the University of Tokyo
掲載誌情報: Coastal marine science. Vol.30No.1, 2006.4, pp. 179-183
抄録: Foliose thalli of Porphyra were collected from Hua Hin, Thailand in January 2005. Their morphological characteristics were observed in the herbaria. They showed various shapes: round shape with smooth or splitting margin or lanceolate shape with smooth or splitting margin. The ratios of each shape were as follows: round shape with smooth margin was 11%, round shape with splitting margin was 21%, lanceolate shape with smooth margin was 11%, lanceolate shape with splitting margin was 39%, and the thalli showing mixed morphological characteristics of round and lanceolate shape were 19%. Foliose thalli of round shape were 2-6cm long and 2-4 (5)cm broad; monostromatic were about 25-35μm in thickness and denticulated at the margin; monoecious; The division formula of antheridium was a/4, b/4 and c/4 and sixty-four spermatia were formed. The division formula of carpogonium was a/2, b/4 and c/2 and sixteen carpospores are formed. These observed characteristics were not different from that reported for Porphyra suborbiculata. On the other hand, foliose thalli of lanceolate shape were 4-10cm long and 1-4cm broad; monostromatic about 20-30μm in thickness and denticulated at the margin; the seaweed was monoecious. The division formula of antheridium was a/4, b/4 and c/4 and sixty-four spermatia were formed. The division formula of carpogonium was a/2, b/2 and c/2 and sixteen carpospores are formed. These observed characteristics were not different from that reported for Porphyra vietnamensis. Foliose thalli having both morphological characteristics of P. suborbiculata and P. vietnamensis would be a crossed species between them. From these observations, the foliose thalli collected from Hua Hin were identified as P. suborbiculata, P. vietnamensis and a crossed species between them.
URI: http://hdl.handle.net/2261/5629
ISSN: 13493000
出現カテゴリ:Coastal Marine Science
Coastal Marine Science

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