| New phenomenon in early development of sporelings in Gracilaria asiatica Chang et Xia （Gracilariaceae, Rhodophyta） |
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| 引用本文： | 赵凤娟,王爱华,刘吉东,段德麟.New phenomenon in early development of sporelings in Gracilaria asiatica Chang et Xia （Gracilariaceae, Rhodophyta）[J].中国海洋与湖沼学报,2006,24(4):364-369. |
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| 作者姓名： | 赵凤娟 王爱华 刘吉东 段德麟 |
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| 作者单位： | Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Institute of Oceanology Chinese Academy of Sciences，Qingdao 266071 China The Graduate School of the Chinese Academy of Sciences Beijing 100039 China，Qingdao 266071 China Life Science College Laiyang Agricultural University Qingdao 266109 China，Qingdao 266071 China，Qingdao 266071 China |
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| 基金项目： | Supported by NSFC (No. 40376049) and the Knowledge Innovation Program of Chinese Academy of Sciences and the Shandong Agricultural Seed Stock Breeding Project (Granted to D. L. Duan). |
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| 摘 要： | 1 INTRODUCTION The red alga Gracilaria belongs to Gracilari- aceae, Gigartinales, Florideophyceae, and includes over 100 recorded species, wildly distributing in tropical and temperate regions (Oliveira and Plastino, 1994), and is useful for producing val…
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| 关 键 词： | 孢苗 分化 红藻 海洋生物 |
| 收稿时间： | 2005-09-26 |
| 修稿时间： | 2005-10-24 |
New phenomenon in early development of sporelings inGracilaria asiatica Chang et Xia (Gracilariaceae, Rhodophyta) |
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| Zhao Fengjuan,Wang Aihua,Liu Jidong,Duan Delin.New phenomenon in early development of sporelings inGracilaria asiatica Chang et Xia (Gracilariaceae, Rhodophyta)[J].Chinese Journal of Oceanology and Limnology,2006,24(4):364-369. |
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| Authors: | Zhao Fengjuan Wang Aihua Liu Jidong Duan Delin |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China;(2) The Graduate School of the Chinese Academy of Sciences, 100039 Beijing, China;(3) Life Science College, Laiyang Agricultural University, 266109 Qingdao, China |
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| Abstract: | Study on the early development of sporelings from carpospores of Gracilaria asiatica Chang et Xia was conducted indoors under controlled culture conditions. Besides normal development of sporelings, a new developmental phenomenon of filamentous frond was observed. It was composed of one or two rows of cells, and took place from the outmost brim of the basal disc. During the early disc stage of germinated carpospores, one or two filamentous fronds formed on about 10% basal discs. Simul-taneously, young fronds began to arch slightly from the centers of single and coalescent discs; lately more filamentous fronds up to 80% appeared on the brims of basal discs. Meanwhile one or more upright fronds protuberated on the basal discs. Generally, filamentous fronds exhibited in self-existence or co-existence forms with normal young sporelings on the same basal disc, and single cell detached from filamentous fronds developed into a new filamentous frond. This new phenomenon exhibited a unique differentiation pathway during the early development of G. asiatica, which would be potential for the ap-plication in artificial sporelings nursery. |
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| Keywords: | filamentous fronds basal disc sporeling early development Gracilaria asiatica |
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