Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory
文献类型：CNKI期刊论文
| 作者 | Wang ZY(王志远); Wang GC(王广策); Niu JF(牛建峰); Wang WJ(汪文俊); Peng G(彭光) |
| 发表日期 | 2010-08-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | Gracilaria lemaneiformis Bory tetraspore pulse-amplitude-modulated photosynthesis |
| 英文摘要 | Gracilaria lemaneiformis Bory is an economically important alga that is primarily used for agar production.Although tetraspores are ideal seeds for the cultivation of G.lemaneiformis,the most popular culture method is currently based on vegetative fragments,which is labor-intensive and time-consuming.In this study,we optimized the conditions for tetraspore release and evaluated the photosynthetic activities of different colonies formed from the branches of G.lemaneiformis using a PAM(pulse-amplitude-modulated) measuring system.The results showed that variations in temperature and salinityhad significant effects on tetraspore yield.However,variations in the photon flux density(from 15 μmol m-2 s-1 to 480 μmol m-2 s-1) had no apparent effect on tetraspore yield.Moreover,the PAM-parameters Y(I),Y(Ⅱ),ETR(I),ETR(Ⅱ) and Fv/Fm of colonies formed from different branches showed the same trend:parameter values of first generation branches>second generation branches>third generation branches.These results suggest that the photosynthetic activities of different colonies of branches changed with the same trend.Furthermore,photosynthesis in G.lemaneiformis was found to be involved in vegetative reproduction and tetraspore formation.Finally,the first generation branches grew slowly,but accumulated organic compounds to form large numbers of tetraspores.Taken together,these results showed that the first generation branches are ideal materials for the release of tetraspores. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(No.30830015) ; the National Key Technology Research and Development Program of the 11th Five-Year Plan(No.2006BAD09A04) ; the National High Technology Research and Development Program of China(863Program,Nos.2006AA10A402,2007AA09Z406,2006AA05Z112,2006AA10A413) |
| 卷 | v.28期:04页:28-38 |
| 语种 | 英文; |
| 分类号 | Q948.8 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/191996]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofExperimentalMarineBiology,InstituteofOceanology,ChineseAcademyofSciences 2.CollegeofMarineScienceandEngineering,TianjinUniversityofScienceandTechnology |
| 推荐引用方式 GB/T 7714 | Wang ZY,Wang GC,Niu JF,et al. Optimization of conditions for tetraspore release and assessment of photosynthetic activities for different generation branches of Gracilaria lemaneiformis Bory. 2010. |
入库方式： OAI收割
来源：海洋研究所
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