Periodic exposure to ambient solar irradiance benefits the growth of juvenile seedlings of Hizikia fusiformis
文献类型：CNKI期刊论文
| 作者 | Dan TF(单体锋); Pang SJ(逄少军); Gao SQ(高素芹) |
| 发表日期 | 2011-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | Hizikia fusiformis solar irradiance dark thalli epiphytes resistance |
| 英文摘要 | In our trials, from 2007 to 2008, of mass production of seedlings of Hizikia fusiformis using synchronization techniques, problems of a "dark thalli" phenomenon and epiphytes contamination severely threatened the health of juvenile seedlings. In this investigation, we optimized conditions for improving the growth of juvenile seedlings. Seven string collectors were seeded with zygotes and a series of experiments were conducted including direct exposure to solar irradiance, co-culture with Ulva spp. and treatment with sodium hypochlorite. It was found that direct exposure to solar irradiance (maximum: 1 740 μmol photons/(m2?s)) for 2 h per day could efficiently enhance the growth of young seedlings and simultaneously inhibit the growth of epiphytic algae. In this treatment, 50-day old seedlings could reach an average of 0.44 cm in length and possess up to nine leaflets. However, a single treatment with 18-mmol/L sodium hypochlorite for 10 min severely harmed 15-day old seedlings. In comparison, weekly treatment with 2.2-mmol/L sodium hypochlorite for 10 min brought no apparent harm to seedlings and eliminated epiphytic algae efficiently. However, this treatment significantly increased the detachment rate of seedlings. Inoculating Ulva spp. onto the collector caused a dramatic decrease in the number of seedlings. However, the growth of the remaining seedlings appeared unhampered. All collectors except the control were daily sprayed with a high pressure water jet from the 8th day post fertilization. From the first day to 50th day, no "dark thallus" was observed on any of the seven collectors. We believe that well-timed daily exposure to solar irradiance would favor H. fusiformis in its early growing stages. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National High Technology Research and Development Program of China (863 Program) (Nos. 2006AA10A412 ; 2006AA10A416) ; Main Program of National Science Infrastructure Platform, a project from the Ministry of Science and Technology of China (No. 2006DKA30470-017) ; a non-profit program from the Ministry of Agriculture of China (No. 200903030) |
| 卷 | v.29期:05页:95-100 |
| 语种 | 英文; |
| 分类号 | S917.3 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/191566]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | MarineBiologicalCultureCollectionCentre,InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Dan TF,Pang SJ,Gao SQ. Periodic exposure to ambient solar irradiance benefits the growth of juvenile seedlings of Hizikia fusiformis. 2011. |
入库方式： OAI收割
来源：海洋研究所
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