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Spore Germination and Early Stages of Development in Hypnea valentiae (Turner) Montagne (Rhodophyta, Gigartinales)

Spore Germination and Early Stages of Development in Hypnea valentiae (Turner) Montagne... The pattern of carpospore and tetraspore germination and also of holdfast and shoot differentiation in Hypnea valentiae (Turner) Montagne (Rhodophyta, Gigartinales) has been investigated for the first time. The germination pattern for both types of spores was of the "Dumontia-type" in the terminology of Chemin, of the "Typus discalis mediatus" according to Inoh. Multicellular holdfasts and several shoot axes were subsequently differentiated from each sporeling, and the patterns observed closely resembled those recently reported by the senior au t hör for H. cervicornis from Hawaii Introduction A vast majority of published reports on the developmental biology of the marine algae (e.g. Killian 1914, Kylin 1917, Chemin 1937, Inoh 1947) are limited to the first few days of germination. In the genus Hypnea Lamouroux, the first species studied with respect to its developmental biology was H. charoides Lamouroux. However, in this study, Inoh (1947) did not go beyond the germination stage. In an attempt to reveal what happens beyond spore germination in Hypnea, Mshigeni (1974) has recently conducted a prolonged cultural study of the sporelings of t wo species of Hypnea from Hawaii viz., H. cervicomis J. Agardh and H. chordacea Kützing. This study included aspects of holdfast and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Botanica Marina de Gruyter

Spore Germination and Early Stages of Development in Hypnea valentiae (Turner) Montagne (Rhodophyta, Gigartinales)

Mshigeni, K. E.; Lorri, W. S. M.
Botanica Marina , Volume 20 (6) – Jan 1, 1977
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Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0006-8055
eISSN
1437-4323
DOI
10.1515/botm.1977.20.6.381
Publisher site
See Article on Publisher Site

Abstract

The pattern of carpospore and tetraspore germination and also of holdfast and shoot differentiation in Hypnea valentiae (Turner) Montagne (Rhodophyta, Gigartinales) has been investigated for the first time. The germination pattern for both types of spores was of the "Dumontia-type" in the terminology of Chemin, of the "Typus discalis mediatus" according to Inoh. Multicellular holdfasts and several shoot axes were subsequently differentiated from each sporeling, and the patterns observed closely resembled those recently reported by the senior au t hör for H. cervicornis from Hawaii Introduction A vast majority of published reports on the developmental biology of the marine algae (e.g. Killian 1914, Kylin 1917, Chemin 1937, Inoh 1947) are limited to the first few days of germination. In the genus Hypnea Lamouroux, the first species studied with respect to its developmental biology was H. charoides Lamouroux. However, in this study, Inoh (1947) did not go beyond the germination stage. In an attempt to reveal what happens beyond spore germination in Hypnea, Mshigeni (1974) has recently conducted a prolonged cultural study of the sporelings of t wo species of Hypnea from Hawaii viz., H. cervicomis J. Agardh and H. chordacea Kützing. This study included aspects of holdfast and

Journal

Botanica Marina – de Gruyter

Published: Jan 1, 1977

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