Mass culture of Undaria gametophyte clones and their use in sporeling culture

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	Mass culture of Undaria gametophyte clones and their use in sporeling culture
	Wu, CY; Li, DP; Liu, HH; Peng, G; Liu, JX
	2004-01-15
发表期刊	HYDROBIOLOGIA
ISSN	0018-8158
卷号	512 期号:1-3 页码:153-156
文章类型	Article
摘要	Undaria pinnatifida (Harv.) Sur. is one of the three main seaweed species under commercial cultivation in China. In the mid-1990s the annual production was about 20000 tons dry. The supply of healthy sporelings is key to the success of commercial cultivation of Undaria. Previous studies demonstrated that instead of the zoospore collection method, sporelings can be cultured through the use of gametophyte clones. This paper reports the experimental results on mass culture of clones and sporeling raising in commercial scale. Light had an obvious effect on growth of gametophyte clones. Under an irradiance of 80 mumol m(-2) s(-1) and favorable temperature of 22-25degreesC, mean daily growth rate may reach as high as 37%. Several celled gametophyte fragments were sprayed onto the palm rope frame. Gametogenesis occurred after 4-6 days. Juvenile sporeling growth experiments showed that nitrate and phosphate concentrations of 2.9 10(-4) mol 1(-1) and 1.7 10(-5) mol 1(-1) were sufficient to enable the sporelings to maintain a high daily growth rate. Sporelings can reach a length of 1 cm in a month. Since 1997, extension of the clone technique has been carried out in Shandong Province. Large-scale production of sporelings for commercial cultivation of 14 and 31 hectares in 1997 and 1998 had been conducted successfully.; Undaria pinnatifida (Harv.) Sur. is one of the three main seaweed species under commercial cultivation in China. In the mid-1990s the annual production was about 20000 tons dry. The supply of healthy sporelings is key to the success of commercial cultivation of Undaria. Previous studies demonstrated that instead of the zoospore collection method, sporelings can be cultured through the use of gametophyte clones. This paper reports the experimental results on mass culture of clones and sporeling raising in commercial scale. Light had an obvious effect on growth of gametophyte clones. Under an irradiance of 80 mumol m(-2) s(-1) and favorable temperature of 22-25degreesC, mean daily growth rate may reach as high as 37%. Several celled gametophyte fragments were sprayed onto the palm rope frame. Gametogenesis occurred after 4-6 days. Juvenile sporeling growth experiments showed that nitrate and phosphate concentrations of 2.9 10(-4) mol 1(-1) and 1.7 10(-5) mol 1(-1) were sufficient to enable the sporelings to maintain a high daily growth rate. Sporelings can reach a length of 1 cm in a month. Since 1997, extension of the clone technique has been carried out in Shandong Province. Large-scale production of sporelings for commercial cultivation of 14 and 31 hectares in 1997 and 1998 had been conducted successfully.
关键词	Undaria Pinnatifida Gametophyte Clones Mass Culture Sporeling Raising China
学科领域	Marine & Freshwater Biology
收录类别	SCI
语种	英语
WOS记录号	WOS:000220784100021
引用统计	被引频次：19[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/337002/3234
专题	实验海洋生物学重点实验室
作者单位	Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wu, CY,Li, DP,Liu, HH,et al. Mass culture of Undaria gametophyte clones and their use in sporeling culture[J]. HYDROBIOLOGIA,2004,512(1-3):153-156.
APA	Wu, CY,Li, DP,Liu, HH,Peng, G,&Liu, JX.(2004).Mass culture of Undaria gametophyte clones and their use in sporeling culture.HYDROBIOLOGIA,512(1-3),153-156.
MLA	Wu, CY,et al."Mass culture of Undaria gametophyte clones and their use in sporeling culture".HYDROBIOLOGIA 512.1-3(2004):153-156.

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