Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3389/fpls.2018.01167 |
The Bet-Hedging Strategies for Seedling Emergence of Calligonum mongolicum to Adapt to the Extreme Desert Environments in Northwestern China | |
Fan, Baoli1,2; Zhou, Yongfeng3,4; Ma, Quanlin2![]() | |
通讯作者 | Zhao, Changming ; Sun, Kun |
来源期刊 | FRONTIERS IN PLANT SCIENCE
![]() |
ISSN | 1664-462X |
出版年 | 2018 |
卷号 | 9 |
英文摘要 | Calligonum mongolicum is a dominant native perennial shrub on sand dunes in arid deserts of northwestern China, and is therefore widely used in sand dune stabilization in these regions. However, it remains largely unknown how seedling emergence of C. mongolicum has adapted to unpredictable sand movement and extreme drought. Here we examined effects of seed burial depth, light intensity, and seed age on seedling emergence, and considered seed germination and seedling emergence strategies for the shrub’s adaption to the desert environment. In our pot experiment, the optimum seeding depth for emergence of C. mongolicum was 2 cm, indicating that for germination and seedling emergence only moderate sand burial is required. Light intensity at the surface soil (0 cm) was important for seedling emergence, while there was no significant difference between 50 and 20% light flux density, at burial depths of 1 and 2 cm, indicating that C. mongolicum seeds had adapted to sand burial, while not exposure from sand erosion. We also found C. mongolicum seedlings emerged in spring and in late summer to early autumn. Meanwhile, seedling emergence percentage for 3-year-old seeds was similar to that of 1-year-old seeds, which meant that C. mongolicum seeds were well preserved under normal sand dune conditions, thus were capable of developing a persistent, but shallow soil seed-bank. These results indicated that germination and seedling emergence take a bet-hedging strategies to adapt to variable desert environments. Our study confirmed that C. mongolicum desert shrubs combine strategies in its adaption to arid and variable sand environments. |
英文关键词 | desert pioneer shrub seed burial depth light intensity seed age seedling emergence strategy |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000441045200001 |
WOS关键词 | SAND BURIAL ; PHENOTYPIC PLASTICITY ; WINTER ANNUALS ; GERMINATION STRATEGIES ; VARIABLE ENVIRONMENT ; ANNUAL PLANTS ; DUNES ; DORMANCY ; BANK ; REGENERATION |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
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/2XILL650/209477 |
作者单位 | 1.Northwest Normal Univ, Coll Life Sci, Lanzhou, Gansu, Peoples R China; 2.Gansu Desert Control Res Inst, State Key Lab Desertificat & Aeolian Sand Disaste, Lanzhou, Gansu, Peoples R China; 3.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Gansu, Peoples R China; 4.Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92717 USA |
推荐引用方式 GB/T 7714 | Fan, Baoli,Zhou, Yongfeng,Ma, Quanlin,et al. The Bet-Hedging Strategies for Seedling Emergence of Calligonum mongolicum to Adapt to the Extreme Desert Environments in Northwestern China[J]. 兰州大学,2018,9. |
APA | Fan, Baoli,Zhou, Yongfeng,Ma, Quanlin,Yu, Qiushi,Zhao, Changming,&Sun, Kun.(2018).The Bet-Hedging Strategies for Seedling Emergence of Calligonum mongolicum to Adapt to the Extreme Desert Environments in Northwestern China.FRONTIERS IN PLANT SCIENCE,9. |
MLA | Fan, Baoli,et al."The Bet-Hedging Strategies for Seedling Emergence of Calligonum mongolicum to Adapt to the Extreme Desert Environments in Northwestern China".FRONTIERS IN PLANT SCIENCE 9(2018). |
条目包含的文件 | 条目无相关文件。 |
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。