Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2009.09.013 |
Is reduced seed germination due to water limitation a special survival strategy used by xerophytes in arid dunes? | |
Zeng, Yan Jun1; Wang, Yan Rong1; Zhang, Ju Ming2 | |
通讯作者 | Wang, Yan Rong |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2010 |
卷号 | 74期号:4页码:508-511 |
英文摘要 | Using multi-sampling methods, seeds of xerophytic species, Caragano korshinskii, Artemisia sphaerocephala, and Hedysarum scoparium were collected from semi-arid regions of northwest China, while those of Reaumuria soongorica and Zygophyllum xanthoxylum were harvested from arid regions. Seed germination in these five species was studied under water limiting conditions, imposed by increasing concentrations of polyethylene glycol (PEG 6000). Seeds of C. korshinskii, one of the semi-arid species, had the highest germination capacity at the most negative osmotic potential (15.0% seed germinated at -2.1 Mega Pascal (MPa), followed by H. scoparium (6.5% germinated at -1.8 MPa), R. soongorica (2.2% germinated at -1.8 MPa) and A. sphaerocephala (8.3% germinated at -1.5 MPa). Seeds of Z. xanthoxylum, an and habitat species, showed the least germination in response to limited water, with a germination percentage of only 5.2% at an osmotic potential of -1.2 MPa. Z xanthoxylum the species native to the most dry environments showed the highest sensitivity to water availability of all five species. This strategy is proposed as an adaptive germination mechanism of xerophytes native to arid dunes. (C) 2009 Elsevier Ltd. All rights reserved. |
英文关键词 | Arid Germination capacity Polyethylene glycol (PEG 6000) Water limitation Xerophytes |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000274931600011 |
WOS关键词 | STRESS ; TEMPERATURE |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 兰州大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/164887 |
作者单位 | 1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Minist Agr, Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China; 2.S China Agr Univ, Coll Agron, Dept Grassland Sci, Guangzhou 510642, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Zeng, Yan Jun,Wang, Yan Rong,Zhang, Ju Ming. Is reduced seed germination due to water limitation a special survival strategy used by xerophytes in arid dunes?[J]. 兰州大学,2010,74(4):508-511. |
APA | Zeng, Yan Jun,Wang, Yan Rong,&Zhang, Ju Ming.(2010).Is reduced seed germination due to water limitation a special survival strategy used by xerophytes in arid dunes?.JOURNAL OF ARID ENVIRONMENTS,74(4),508-511. |
MLA | Zeng, Yan Jun,et al."Is reduced seed germination due to water limitation a special survival strategy used by xerophytes in arid dunes?".JOURNAL OF ARID ENVIRONMENTS 74.4(2010):508-511. |
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