Early development ofChondrus ocellatus holm (Gigartinaceae, Rhodophyta)

Wang Aihua; Wang Jicheng; Duan Delin

doi:10.1007/BF02842811

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Early development ofChondrus ocellatus holm (Gigartinaceae, Rhodophyta)

Updated：2023-05-16

- Early development ofChondrus ocellatus holm (Gigartinaceae, Rhodophyta)
- Journal of Oceanology and Limnology Vol. 24, Issue 2, Pages: 129-133(2006)
- Affiliations：
  
  1. Institute of Oceanology The Chinese Academy of Sciences
  2. The Graduate School of the Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/BF02842811
  CLC：
- Online First：31 January 2013，
  
  Published：2006
- Accepted：
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Aihua, W., Jicheng, W. & Delin, D. Early development ofChondrus ocellatus holm (Gigartinaceae, Rhodophyta)., Chin. J. Ocean. Limnol. 24, 129–133 (2006). https://doi.org/10.1007/BF02842811
DOI：

Aihua, W., Jicheng, W. & Delin, D. Early development ofChondrus ocellatus holm (Gigartinaceae, Rhodophyta)., Chin. J. Ocean. Limnol. 24, 129–133 (2006). https://doi.org/10.1007/BF02842811 DOI：

摘要

Abstract

Chondrus is an economically important red algae widely used for food and biochemical purpose. It early development is crucial for the culture and seedling propagation. We chose tetraspores and carpospores ofChondrus ocellatus as examples for experiment of the culture

induction and release in laboratory condition

aiming to understand early development ofC. ocellatus and to apply in seedling production. MatureC. ocellatus were collected in Qingdao

China

from Nov. to Dec. 2004. After the gametophyte and tetrasporophyte were brushed and washed with sterilized seawater

the algal materials were treated in 1.5% KI for 20 min

then were dried for 1h to stimulate the releasing of spores. After the spores released overnight

it were cultured in PES medium

incubated at 18 °C

10±2 μmol/(m2·s1) in 12∶12h (light: dark). The observation and recording under microscope were carried out. Continuous observation of the early development showed that both tetraspore and carpospore are similar to each other. In general

three stages of the early development were shown being division

discoid crust and seedling stages. To the division stage

the most obvious feature was the increasing of cell number; during the discoid crust stage

the discoid crust had a three-dimensional axis

and it began to differentiate into two types of cells: the basal cells and the apical cells; and to the seedling stage

several protuberances-like appeared on the discoid crusts and formed juvenile seedlings. Carpospores and tetraspores exhibited a similar development process that included division stage

discoid crust stage and seedling stage.

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references

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