Holdfast and Shoot Differentiation in the Sporelings of Hypnea cervicornis J. Agardh (Rhodophyta, Gigartinales)
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Date
1976
Authors
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Journal ISSN
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Publisher
Botanica Marina
Abstract
Holdfast and shoot differentiation in the Sporelings of Hypnea cervicornis J. Agardh has been
investigated for the first time. It was observed that the holdfasts of this species are not simple
unicellular structures but consist of large masses of cells differentiated from amongst the
superficial cells at the points of contact with the substratum. After or during holdfast
differentiation, the morula-like mass of cells produced shoot Initials. One to four Initials were
ob-served. When three or more initials were differentiated at the same time, stellate stages were
formed. The stellate stages in Hypnea ontogeny are discussed with reference to similai structures
reported in taxonomic literature äs diagnostic criteria for H. cornuta (Lamour.) J. Agardh
Description
Keywords
Holdfast, Shoot Differentiation
Citation
Mshigeni, K.E., 1976. Holdfast and shoot differentiation in the sporelings of Hypnea cervicornis J. Agardh (Rhodophyta, Gigartinales).