| 基于人为调控盐度的促进大叶藻种子萌发及建苗技术研究 |
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| 引用本文： | 刘云龙,张学雷,宋伟,王宗灵.基于人为调控盐度的促进大叶藻种子萌发及建苗技术研究[J].海洋学报(英文版),2016,35(8):99-105. |
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| 作者姓名： | 刘云龙 张学雷 宋伟 王宗灵 |
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| 作者单位： | 中国海洋大学 环境科学与工程学院, 山东 青岛, 266100;国家海洋局 海洋生态环境科学与工程重点实验室, 山东 青岛, 266061,国家海洋局 第一海洋研究所, 山东 青岛, 266061;国家海洋局 海洋生态环境科学与工程重点实验室, 山东 青岛, 266061,国家海洋局 第一海洋研究所, 山东 青岛, 266061;国家海洋局 海洋生态环境科学与工程重点实验室, 山东 青岛, 266061,国家海洋局 第一海洋研究所, 山东 青岛, 266061;国家海洋局 海洋生态环境科学与工程重点实验室, 山东 青岛, 266061 |
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| 基金项目： | The National Natural Science Foundation of China-Shandong Joint Fund for Marine Ecology and Environmental Sciences under contract No. U1406403. |
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| 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 salinities5–30 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.
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| 关 键 词： | 大叶藻 修复 种子 萌发 幼苗 盐度 |
| 收稿时间： | 1/2/2016 12:00:00 AM |
| 修稿时间： | 5/3/2016 12:00:00 AM |
Artificial seed germination and seedling production of Zostera marina L. by salinity manipulation |
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| LIU Yunlong,ZHANG Xuelei,SONG Wei and WANG Zongling.Artificial seed germination and seedling production of Zostera marina L. by salinity manipulation[J].Acta Oceanologica Sinica,2016,35(8):99-105. |
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| Authors: | LIU Yunlong ZHANG Xuelei SONG Wei and WANG Zongling |
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| Institution: | 1.College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Science and Engineering for Marine Ecology and Environment, State Oceanic Administration, Qingdao 266061, China2.The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Science and Engineering for Marine Ecology and Environment, State Oceanic Administration, Qingdao 266061, China |
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| Abstract: | 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. |
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| Keywords: | Zostera marina L rehabilitation seed germination seedling salinity |
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