Culture study of the red alga Polysiphonia yendoi Segi(Ceramiales, Rhodophyta)
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概要
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Life history and morphological development of Polysiphonia yendoi Segi (Ceramiales, Rhodopbyta) were investigated by culture experiments. This species was shown to have the "Polysiphonia-type" life history. Morphological plasticity was assessed in several features which have been adopted as taxonomic criteria. The external appearance of individual plants, length/diameter ratios of segments, morphology of cystocarps showed phenotypic variation according to the growth stage, temperatures and photoregimes. On the other hand, some critical features of this species were discovered for the first time. Endogenous adventitious branches were formed from the basal portion of main axes, and cicatrigenous branchlets were exogenously produced from the basal cells of shed trichoblasts. It was confirmed that the secondary rhizoids were cut off from periaxial cells, which was different from the original description of P. yendoi.
- 札幌大学の論文
- 1996-03-30