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ALGAE > Volume 19(4); 2004 > Article
ALGAE 2004;19(4): 303-309. doi: https://doi.org/10.4490/ALGAE.2004.19.4.303
Life History of Porphyra seriata Kjellman (Bangiales, Rhodophyta) from Korea in Laboratory Culture
Nam-Gil Kim, Masahiro Notoya
ABSTRACT
The laboratory culture study of Porphyra seriata Kjellman from Korea was conducted at different conditions of temperatures (5, 10, 15, 20, 25 and 30), photon flux densities (10, 20, 40 and 80 mol ) and photoperiods (14L: 10D and 10L:14D). Conchocelis filaments grew fast at 15-20 and 20-80 mol under both photoperiods. Concho sporangial branches were produced at 5-25, and abundant when the conchocelis filaments were cultured at higher temperatures of 20-25 under both photoperiods. Foliose thalli grew well at 15-20 under 10L:14D and at 20 under 14L:10D. At 30, the foliose thallus failed to survive. No archespores were observed at any culture conditions. Spermatangia and zygotosporangia were formed in squarish patches at the upper marginal portion of mature thalli. Anatomical examination revealed that the mature spermatangia were 64 (a/4, b/2, c/8) and 128 (a/4, b/4, c/8), and that of zygotosporangium was 16 (a/2, b/2, c/4) according to the Hus' formula.
Key words: Bangiales; culture; life history; Porphyra seriata; Rhodophyta


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