Early development of germlings of Sargassum thunbergii (Fucales, Phaeophyta) under laboratory conditions

doi:10.1007/s10811-008-9311-y

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	Early development of germlings of Sargassum thunbergii (Fucales, Phaeophyta) under laboratory conditions
	Zhao, Ziguo 1,2; Zhao, Fengjuan 1; Yao, Jianting 1; Lu, Jingmei 2; Ang, Put. O., Jr.3; Duan, Delin 1
	2008-10-01
发表期刊	JOURNAL OF APPLIED PHYCOLOGY
ISSN	0921-8971
卷号	20 期号:5 页码:925-931
文章类型	Article
摘要	Morphology and culture studies on germlings of Sargassum thunbergii (Mertens et Roth) Kuntze were carried out under controlled laboratory conditions. Growth characteristics of these germlings grown under different temperatures (from 10 to 25A degrees C), irradiances (from 9 to 88 mu mol photons m(-2) s(-1)), and under blue and white light conditions are described. The development of embryonic germlings follows the classic "8 nuclei 1 egg" type described for Sargassaceae. Fertilized eggs spent 5-6 h developing into multicellular germlings with abundant rhizoids after fertilization. Under conditions of 20A degrees C, 44 mu mol photons m(-2) s(-1) and photoperiod of 12 h, young germlings with one or two leaflets reached 2-3 mm in length after 8 weeks. Temperature variations (10, 15, 20, 25A degrees C) under 88 mu mol photons m(-2) s(-1) significantly influenced the growth rate within the first week, although this effect became less obvious after 8 weeks, especially at 15 and 20A degrees C. Variation in germling growth was highly significant under different irradiances (9, 18, 44, 88 mu mol photons m(-2) s(-1)) at 25A degrees C. Low temperature (10A degrees C) reduced germling growth. Growth of germlings cultured under blue light was lower than in white light. Optimal growth of these germlings occurred at 25A degrees C and 44 mu mol photons m(-2) s(-1).; Morphology and culture studies on germlings of Sargassum thunbergii (Mertens et Roth) Kuntze were carried out under controlled laboratory conditions. Growth characteristics of these germlings grown under different temperatures (from 10 to 25A degrees C), irradiances (from 9 to 88 mu mol photons m(-2) s(-1)), and under blue and white light conditions are described. The development of embryonic germlings follows the classic "8 nuclei 1 egg" type described for Sargassaceae. Fertilized eggs spent 5-6 h developing into multicellular germlings with abundant rhizoids after fertilization. Under conditions of 20A degrees C, 44 mu mol photons m(-2) s(-1) and photoperiod of 12 h, young germlings with one or two leaflets reached 2-3 mm in length after 8 weeks. Temperature variations (10, 15, 20, 25A degrees C) under 88 mu mol photons m(-2) s(-1) significantly influenced the growth rate within the first week, although this effect became less obvious after 8 weeks, especially at 15 and 20A degrees C. Variation in germling growth was highly significant under different irradiances (9, 18, 44, 88 mu mol photons m(-2) s(-1)) at 25A degrees C. Low temperature (10A degrees C) reduced germling growth. Growth of germlings cultured under blue light was lower than in white light. Optimal growth of these germlings occurred at 25A degrees C and 44 mu mol photons m(-2) s(-1).
关键词	Sargassum Thunbergii Germling Growth And Development Temperature Irradiance
学科领域	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
DOI	10.1007/s10811-008-9311-y
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000261969300057
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5752
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.NE Normal Univ, Sch Life Sci, Changchun 130024, Peoples R China 3.Chinese Univ Hong Kong, Shantin, Hong Kong, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhao, Ziguo,Zhao, Fengjuan,Yao, Jianting,et al. Early development of germlings of Sargassum thunbergii (Fucales, Phaeophyta) under laboratory conditions[J]. JOURNAL OF APPLIED PHYCOLOGY,2008,20(5):925-931.
APA	Zhao, Ziguo,Zhao, Fengjuan,Yao, Jianting,Lu, Jingmei,Ang, Put. O., Jr.,&Duan, Delin.(2008).Early development of germlings of Sargassum thunbergii (Fucales, Phaeophyta) under laboratory conditions.JOURNAL OF APPLIED PHYCOLOGY,20(5),925-931.
MLA	Zhao, Ziguo,et al."Early development of germlings of Sargassum thunbergii (Fucales, Phaeophyta) under laboratory conditions".JOURNAL OF APPLIED PHYCOLOGY 20.5(2008):925-931.

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