Artificial seed germination and seedling production of Zostera marina L. by salinity manipulation

被引:0
作者
Yunlong Liu
Xuelei Zhang
Wei Song
Zongling Wang
机构
[1] Ocean University of China,College of Environmental Science and Engineering
[2] State Oceanic Administration,The First Institute of Oceanography
[3] State Oceanic Administration,Key Laboratory of Science and Engineering for Marine Ecology and Environment
来源
Acta Oceanologica Sinica | 2016年 / 35卷
关键词
L.; rehabilitation; seed; germination; seedling; salinity;
D O I
暂无
中图分类号
学科分类号
摘要
Vast declines in Zostera marina seagrass beds demand effective methods of rehabilitation. In this study, we developed a practical method by reducing salinity to induce seed germination followed with recovering salinity to facilitate seedling production of Z. marina. The results showed that Z. marina seeds collected from natural seawater (salinity 30) were induced to germinate at reduced salinities. Percent germination (GR) was higher and mean-time-to-germinate (MTG) was shorter at lower salinities. The highest GR and shortest MTG occurred at salinity 0 (deionized freshwater). After germination in freshwater, seeds could develop into seedlings at salinities 5–30 and continue the growth. Viability or development of germinated seeds was not significantly different during the 40 d of post-germination incubation at salinities 5–15 after 1–20 d of germination in freshwater. However, during the process of translating germinated seeds from salinity 0 and 5 to salinity 30, reducing the gradients of post-germination acclimation facilitated more seeds forming seedlings in less time. On average, after 60 d of static incubation, including 20 d in freshwater for germination followed with immediate shift to salinity 5 and increasing to salinity 30 at increment of 5 every two days until cultivation at constant salinity 30, 33% of Z. marina seeds produced healthy seedlings. The results indicate that the salinity-manipulation based method of artificial germination and seedling production is practical and effective in supporting rehabilitation of Z. marina bed.
引用
收藏
页码:99 / 105
页数:6
相关论文
共 79 条
[1]  
Abe M.(2008)Temperature requirements for seed germination and seedling growth of Zostera marina from central Japan Fish Sci 74 589-593
[2]  
Kurashima A.(2007)Ecosystem engineering by annual intertidal seagrass beds: sediment accretion and modification Estuar Coast Shelf Sci 74 344-348
[3]  
Maegawa M.(1998)Seed germination responses to some environmental factors in the seagrass Zostera capricorni from eastern Australia Aquat Bot 62 177-188
[4]  
Bos A. R.(2010)Large-scale Zostera marina (eelgrass) restoration in Chesapeake Bay, Maryland, USA Part I: A comparison of techniques and associated costs. Restor Ecol 18 490-500
[5]  
Bouma T. J.(1983)Field studies on seed germination and seedling development in Zostera marina L Aquat Bot 16 21-29
[6]  
de Kort G. L. J.(1992)Growth characteristics of Zostera marina seedlings under anaerobic conditions Aquat Bot 43 379-392
[7]  
Brenchley J. L.(1980)Flowering, pollination and fruiting in Zostera marina L Aquat Bot 9 201-220
[8]  
Probert R. J.(1999)Seagrass biomass and production: a reassessment Aquat Bot 65 159-174
[9]  
Busch K. E.(1996)Effects of predation on Zostera marina L seed abundance. J Exp Mar Biol Ecol 198 11-26
[10]  
Golden R. R.(2004)Long-term changes in area distribution of eelgrass (Zostera marina) in Danish coastal waters Aquat Bot 78 167-181