Dormancy and germination in Rosa multibracteata Hemsl. & E. H. Wilson
文献类型：期刊论文
| 作者 | Zhou, ZQ; Bao, WK; Wu, N; Bao, WK, Chinese Acad Sci, Chengdu Inst Biol, 9 Sect 4,Renmin Nan Ave,POB 416, Chengdu 610041, Sichuan, Peoples R China. |
| 刊名 | SCIENTIA HORTICULTURAE
 |
| 出版日期 | 2009 |
| 卷号 | 119期号:4页码:434_441 |
| 关键词 | Scarification Warm Plus Cold Stratification Ga(3) Intermediate Physiological Dormancy Rosa Multibracteata |
| ISSN号 | 0304-4238 |
| 产权排序 | 1 |
| 英文摘要 | Most of the achenes produced by Rosa multibracteata Hemsl. & E. H Wilson are dormant on maturity and require pretreatment to stimulate germination. To investigate the mechanism of dormancy and to develop effective methods of improving germination, roles of the pericarp, testa, and embryo of R. multibracteata in regulating dormancy were studied by investigating the effect of different pretreatments on germination. The effects of temperature and water stress were also tested with achenes treated by warm plus cold stratification. In freshly harvested achenes, pericarps are permeable and the embryo fully developed, which eliminates the possibility of physical, morphological, or morphophysiological dormancy. Germination percentage remained low (<5%) despite softening the pericarp or even removing it fully. However, fully removing the testa improved germination significantly (39%), indicating the possible presence of germination inhibitors in the testa. Dry storage, scarification with sulphuric acid (H2SO4), and warm stratification proved ineffective by themselves but when combined with cold stratification, improved germination and shortened the cold stratification period needed to break dormancy. Dry storage for 68 weeks followed by cold stratification for 16 or 24 weeks resulted in maximum germination (72-79%) among all the treatments. In achenes scarified with H2SO4, germination increased with an increase in the duration of cold stratification. Neither gibberellic acid (GA(3)) nor 'smoke water' (water through which smoke had been bubbled for 2 h) had any positive effect on germination even on seeds that had been mechanically scarified or stratified. Both high temperature and water stress lowered germination in achenes treated with warm plus cold stratification. Our results suggest that R. multibracteata achenes have an intermediate physiological dormancy, and that dry storage for 68 weeks followed by cold stratification for 16 or 24 weeks is the best method for propagating R. multibracteata from seed. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Horticulture |
| 语种 | 英语 |
| 资助机构 | Action plan for West Development of the Chinese Academy of Sciences [KZCX2-XB2-02]; State Key Basic Research and Development Plan of China [2005CB422006] ; Action plan for West Development of the Chinese Academy of Sciences [KZCX2-XB2-02]; State Key Basic Research and Development Plan of China [2005CB422006] ; Action plan for West Development of the Chinese Academy of Sciences [KZCX2-XB2-02]; State Key Basic Research and Development Plan of China [2005CB422006] ; Action plan for West Development of the Chinese Academy of Sciences [KZCX2-XB2-02]; State Key Basic Research and Development Plan of China [2005CB422006] |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/22392]  |
| 专题 | 成都生物研究所_生态研究 |
| 通讯作者 | Bao, WK, Chinese Acad Sci, Chengdu Inst Biol, 9 Sect 4,Renmin Nan Ave,POB 416, Chengdu 610041, Sichuan, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhou, ZQ,Bao, WK,Wu, N,et al. Dormancy and germination in Rosa multibracteata Hemsl. & E. H. Wilson[J]. SCIENTIA HORTICULTURAE,2009,119(4):434_441. |
| APA | Zhou, ZQ,Bao, WK,Wu, N,&Bao, WK, Chinese Acad Sci, Chengdu Inst Biol, 9 Sect 4,Renmin Nan Ave,POB 416, Chengdu 610041, Sichuan, Peoples R China..(2009).Dormancy and germination in Rosa multibracteata Hemsl. & E. H. Wilson.SCIENTIA HORTICULTURAE,119(4),434_441. |
| MLA | Zhou, ZQ,et al."Dormancy and germination in Rosa multibracteata Hemsl. & E. H. Wilson".SCIENTIA HORTICULTURAE 119.4(2009):434_441. |
入库方式： OAI收割
来源：成都生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。