naa a22 4500 510737714 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11284-013-1057-6 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1057-6 Habitat-specific responses of seed germination and seedling establishment to soil water condition in two Rheum species in the high Sino-Himalayas [Elektronische Daten] [Bo Song, Jürg Stöcklin, Yong-Qian Gao, Zhi-Qiang Zhang, Yang Yang, Zhi-Ming Li, Hang Sun] Knowledge of how germination and seedling establishment respond to soil water condition is crucial for plant conservation under global warming and land-use changes. We tested the flooding and drought tolerance of two plant species with different occurrences along a soil water gradient by assessing seed germination, seedling survival, seedling growth, and root characteristics. In the high Sino-Himalayas, Rheum alexandrae typically occurs in wetlands, R. nobile in scree or open slope with well-drained soils. Seeds and seedlings of the two species were subjected to different soil water conditions in controlled greenhouse experiments. Seed germination in both species was inhibited by high soil water content; however, seeds of R. alexandrae were more tolerant to flooding, especially to submergence. Seedling survival, biomass accumulation, root diameter, and root porosity of R. alexandrae increased significantly with increased soil water content, but submergence was lethal for seedlings. Seedling survival, biomass accumulation, and root length of R. nobile increased significantly in response to reduced soil water content. These results indicate that in the two species, seed germination and seedling establishment in response to different soil water condition are habitat-specific. Because both species are susceptible to moderate changes in soil water condition, their species-specific requirements with respect to this factor should be a consideration when planning their conservation. The Ecological Society of Japan, 2013 Drought nationallicence Flooding nationallicence Stress tolerance nationallicence Seed germination nationallicence Seedling establishment nationallicence Song Bo Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut Stöcklin Jürg Institute of Botany, University of Basel, Schönbeinstr 6, 4056, Basel, Switzerland aut Gao Yong-Qian Yunnan Forestry Technological College, 650224, Kunming, Yunnan, China aut Zhang Zhi-Qiang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut Yang Yang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut Li Zhi-Ming School of Life Science, Yunnan Normal University, 650092, Kunming, Yunnan, China aut Sun Hang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut Ecological Research Springer Japan 28/4(2013-07-01), 643-651 0912-3814 28:4<643 2013 28 11284 https://doi.org/10.1007/s11284-013-1057-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1057-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Song Bo Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut NATIONALLICENCE 700 1- Stöcklin Jürg Institute of Botany, University of Basel, Schönbeinstr 6, 4056, Basel, Switzerland aut NATIONALLICENCE 700 1- Gao Yong-Qian Yunnan Forestry Technological College, 650224, Kunming, Yunnan, China aut NATIONALLICENCE 700 1- Zhang Zhi-Qiang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut NATIONALLICENCE 700 1- Yang Yang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut NATIONALLICENCE 700 1- Li Zhi-Ming School of Life Science, Yunnan Normal University, 650092, Kunming, Yunnan, China aut NATIONALLICENCE 700 1- Sun Hang Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, Yunnan, China aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/4(2013-07-01), 643-651 0912-3814 28:4<643 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer