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题名: Resource allocation among sexual, clonal reproduction and vegetative growth of two Potamogeton species and their hybrid: Adaptability of the hybrid in relation to its parents
作者: Liu, Fan1, 2; Zhang, Xiao-Lin3; Wang, Qing-Feng1, 2; Liu, Hui4, 5; Wang, Guang-Xi6; Li, Wei1, 2
通讯作者: Li, W (reprint author), Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China.
关键词: Potamogetonxintortifolius ; P ; perfoliatus ; P ; wrightii ; resource allocation ; tradeoffs
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
发表日期: 2013-07-01
DOI: 10.1111/j.1759-6831.2012.00242.x
卷: 51, 期:4, 页:461-467
收录类别: SCI
文章类型: Article
部门归属: [Liu, Fan; Wang, Qing-Feng; Li, Wei] Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China; [Liu, Fan; Wang, Qing-Feng; Li, Wei] Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan 430074, Peoples R China; [Zhang, Xiao-Lin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Liu, Hui] Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China; [Liu, Hui] Chinese Acad Sci, Wuhan 430079, Peoples R China; [Wang, Guang-Xi] Meijo Univ, Fac Agr, Lab Plant Conservat Sci, Aichi 4688502, Japan
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Science and Technology Supporting Item [2012BAC06B04]; Chinese Academy of Sciences [XDA05090305]; National Natural Science Foundation of China [31170340, 30970202]; Special Research Programme of the Ministry of Water Resources [200901009]; Open Foundation of State Key Laboratory of Freshwater Ecology and Biotechnology [2011FB21]; China Postdoctoral Science Foundation [20100471210]
类目[WOS]: Plant Sciences
研究领域[WOS]: Plant Sciences
摘要: Resource allocation, as well as the tradeoffs among different reproductive components, plays an important role in the adaptability of plants to different environments. The hybrid may exhibit a higher adaptability in life history in heterogeneous environments because of the genetic variation derived from its parents. In this study, we exploited three levels of water depths and two types of sediments to investigate the resource allocation pattern of the first generation of the natural hybrid Potamogetonxintortifolius compared to its parents P. wrightii and P. perfoliatus. We also measured the ramet survivorship and the seed set of the hybrid P.xintortifolius. Our results showed that P.xintortifolius had higher ramet survival than its parents at 1.5-m water depth on clay sediment. The possible tradeoffs showed that in P.xintortifolius the tradeoff pattern between sexual and clonal reproduction was more pronounced in limiting environments. The individuals allocated more resources to sexual reproduction when the environment was limiting, which might confer a higher ability to utilize resources, to produce offspring and to found new populations. Although the seed set of P.xintortifolius was lower than its parents, it had a higher ability to increase its seed set when the environment was limiting (sandy sediment) than its parents, which might benefit its future survival. These results indicated that the F-1 hybrid P.xintortifolius was more able to adapt to limiting environments than one or both of its two parental taxa.
英文摘要: Resource allocation, as well as the tradeoffs among different reproductive components, plays an important role in the adaptability of plants to different environments. The hybrid may exhibit a higher adaptability in life history in heterogeneous environments because of the genetic variation derived from its parents. In this study, we exploited three levels of water depths and two types of sediments to investigate the resource allocation pattern of the first generation of the natural hybrid Potamogetonxintortifolius compared to its parents P. wrightii and P. perfoliatus. We also measured the ramet survivorship and the seed set of the hybrid P.xintortifolius. Our results showed that P.xintortifolius had higher ramet survival than its parents at 1.5-m water depth on clay sediment. The possible tradeoffs showed that in P.xintortifolius the tradeoff pattern between sexual and clonal reproduction was more pronounced in limiting environments. The individuals allocated more resources to sexual reproduction when the environment was limiting, which might confer a higher ability to utilize resources, to produce offspring and to found new populations. Although the seed set of P.xintortifolius was lower than its parents, it had a higher ability to increase its seed set when the environment was limiting (sandy sediment) than its parents, which might benefit its future survival. These results indicated that the F-1 hybrid P.xintortifolius was more able to adapt to limiting environments than one or both of its two parental taxa.
关键词[WOS]: ISOZYME EVIDENCE ; AQUATIC PLANT ; WATER DEPTH ; FITNESS ; HYBRIDIZATION ; ASTERACEAE ; RESPONSES ; ORIGIN ; NATANS
语种: 英语
WOS记录号: WOS:000321621800009
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19563
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Wuhan Bot Garden, Hubei Key Lab Wetland Evolut & Ecol Restorat, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
4.Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China
5.Chinese Acad Sci, Wuhan 430079, Peoples R China
6.Meijo Univ, Fac Agr, Lab Plant Conservat Sci, Aichi 4688502, Japan
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