Early development of Chondrus ocellatus Holm (Gigartinaceae,Rhodophyta)

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Early development of Chondrus ocellatus Holm (Gigartinaceae,Rhodophyta)

机译：短吻线虫霍尔姆（Gigartinaceae，Rhodophyta）的早期发育

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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 of Chondrus ocellatus as examples for experiment of the culture, induction and release in laboratory condition, aiming to understand early development of C. ocellatus and to apply in seedling production. Mature C. 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 1 h to stimulate the releasing of spores. After the spores released overnight, it 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.

机译：角叉菜是一种经济上重要的红藻，广泛用于食品和生化目的。它的早期发育对于培养和幼苗繁殖至关重要。我们选择了短吻线虫的四孢子和拟孢子作为实验条件，在实验室条件下进行培养，诱导和释放实验，旨在了解短吻线虫的早期发育并应用于苗木生产。 2004年11月至2004年12月在中国青岛收集成熟的小球藻。将配子体和四孢子体刷洗并用无菌海水洗涤后，将藻类材料在1.5％KI中处理20分钟，然后干燥1分钟。 h刺激孢子的释放。在孢子释放过夜后，进行并在显微镜下记录。对早期发育的连续观察表明，四孢子和碳孢子彼此相似。通常，显示出早期发育的三个阶段是分裂，盘状结壳和幼苗阶段。到分裂阶段，最明显的特征是细胞数量的增加。在盘状壳阶段，盘状壳具有三维轴，并开始分化为两种类型的细胞：基底细胞和根尖细胞。到苗期，盘状结壳上出现几个突起，形成了幼苗。孢子和四孢子表现出相似的发育过程，包括分裂期，盘状壳期和幼苗期。

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《中国海洋湖沼学报（英文版）》 |2006年第2期|129-133|共5页
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Institute of Oceanology, The Chinese Academy of Sciences, Qingdao 266071, China;

The Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;

Institute of Oceanology, The Chinese Academy of Sciences, Qingdao 266071, China;

Institute of Oceanology, The Chinese Academy of Sciences, Qingdao 266071, China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类地球物理学;
关键词
Chondrus ocellatus; early development; carpospore; tetraspore; discoid crust; seedlings;

机译：斜nd;早期发育;孢子;四孢子;硬皮结壳;幼苗;

Early development of Chondrus ocellatus Holm (Gigartinaceae,Rhodophyta)

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