Arid
DOI10.3389/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; Yu, Qiushi2; Zhao, Changming3; Sun, Kun1
通讯作者Zhao, Changming ; Sun, Kun
来源期刊FRONTIERS IN PLANT SCIENCE
ISSN1664-462X
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).
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