ISSN:
1573-5117
Keywords:
archeospores
;
asexual
;
epiphyte
;
Porphyra
;
reproduction
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The reproductive pattern of Porphyra sp. was observed in laboratory culture. The thalli obtained from both natural populations and from cultures were monostromatic and reniform, obovate to linear-oblanceolate. Under the different culture conditions, no differentiation of sexual cells, spermatia or carpogonia, was observed; propagation occurred by archeospore formation (sensu Magne, 1991), with bipolar germination. Thirty successive generations have been obtained in culture, at temperatures of 12 °C and 15 °C, and each time a laminar gametophytic thallus was produced. It is concluded that Porphyra sp. has a strictly asexual reproductive pattern. This is interpreted as a reproductive adaptation to its epiphytic life form.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1017071923317
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