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题名: Seed germination of Lasia spinosa as a function of temperature, light, desiccation, and storage
作者: Tang, An-jun1, 2; Long, Chun-lin1
刊名: AQUATIC BOTANY
关键词: Lasia spinosa ; desiccation tolerance ; recalcitrant seeds ; seed germination ; seed storage ; tropical swamp
英文摘要: Lasia spinosa seeds were not dormant at maturity in early spring. The most favorable temperatures for germination were between 25 and 30 degrees C, and final percentage and rate of germination decreased with an increase or decrease in temperature. When L. spinosa seeds were transferred to 25 degrees C, after 60 days at 10 degrees C (where none of the seeds germinated), final germination increased from 0% to 78%. Seeds germinated to high percentage both in light and in dark, although dark germination took more than twice as long as in the light. During desiccation of seeds at 15 degrees C and 45% relatively humidity, moisture loss decreased exponentially from 2.02 to 0.13 g H2O g(-1) dry wt within 16 days, and only a few seeds (12%) survived 0.13 g H2O g(-1) dry wt moisture content. Seeds stored at 0.58 g H2O g(-1) dry wt moisture content at four constant temperatures (4,10,15, and -18 degrees C) for up to 6 months exhibited a well-defined trend of decreasing viability with decreasing temperature. Thus, we concluded that freshly harvested L. spinosa seeds are non-dormant and recalcitrant. Also, the seeds with 0.58 g H2O g(-1) dry wt moisture content could be effectively stored for a few months between 10 and 15 degrees C although the most appropriate temperature for wet storage appears to be 10 degrees C, as it is close to the minimum temperature for germination and so there will be less pre-sprouting compared to 15 degrees C. (C) 2008 Elsevier B.V. All rights reserved.
出版日期: 2008-11-01
卷号: 89, 期号:4, 页码:352-356
语种: 英语
收录类别: SCI
学科分类: Plant Sciences; Marine & Freshwater Biology
ISSN号: 0304-3770
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2497
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Tang, AJ; Long, CL.Seed germination of Lasia spinosa as a function of temperature, light, desiccation, and storage,AQUATIC BOTANY,2008,89(4):352-356
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