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When interspecific prezygotic barriers break down: hybridization between two Potamogeton species (P. wrightii and P. perfoliatus) and comparison of the artificial and natural hybrids
Zhang, Xiao-Lin; Li, Xiao-Xia; Ni, Le-Yi; Guo, You-Hao; Zhang, XL (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; zhangxl@ihb.ac.cn; nily@ihb.ac.cn; yhguo@whu.edu.cn
2011
Source PublicationPLANT SYSTEMATICS AND EVOLUTION
ISSN0378-2697
Volume295Issue:40547Pages:119-128
AbstractInterspecific hybridization played an important role in speciation and evolution of angiosperms. Although the widespread occurrence of natural hybrids in the genus Potamogeton has been studied intensively, few successful experimental hybridization studies have been reported in this genus. In the present study, critical experimental hybridization was conducted using Potamogeton x intortusifolius, a natural hybrid widely distributed in China, and its parents (P. perfoliatus and P. wrightii). The absence of prezygotic barriers between P. wrightii and P. perfoliatus was observed, which contributes to the frequent hybridization of these species in nature. The pollen tube growth rates of P. perfoliatus were much faster than those of P. wrightii in the style of that species. However, the conspecific pollen tubes were competitively advantageous in P. perfoliatus styles. The interspecific hybridization could be applied bidirectionally, and 28 F1 hybrid individuals were successfully obtained from P. wrightii x P. perfoliatus, despite the low germination possibility of the hybrid seeds. Both the artificial and natural hybrids exhibited intermediate morphological characters but presented much lower fertility. The sterility of P. x intortusifolius is mainly due to its low female fitness. However, the offspring from P. wrightii x P. x intortusifolius indicated the potential for backcrossing in nature. This is the most successful attempt at artificial hybridization in this genus so far. The possible route for restoration of fertility and the fitness of the hybrids are also discussed in this paper.
KeywordArtificial Hybridization Prezygotic Barriers Hybrids Fertility Restoration Potamogeton
Department[Zhang, XL; Ni, LY] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Li, XX; Guo, YH] Wuhan Univ, Coll Life Sci, Lab Plant Systemat & Evolutionary Biol, Wuhan 430072, Peoples R China
Subject AreaPlant Sciences ; Evolutionary Biology
Funding OrganizationNational Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210]
Indexed BySCI
Language英语
WOS IDWOS:000293026600009
Funding OrganizationNational Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210] ; National Natural Science Foundation of China[30430050]; China Postdoctoral Science Foundation[20100471210]
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16279
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorZhang, XL (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; zhangxl@ihb.ac.cn; nily@ihb.ac.cn; yhguo@whu.edu.cn
Recommended Citation
GB/T 7714
Zhang, Xiao-Lin,Li, Xiao-Xia,Ni, Le-Yi,et al. When interspecific prezygotic barriers break down: hybridization between two Potamogeton species (P. wrightii and P. perfoliatus) and comparison of the artificial and natural hybrids[J]. PLANT SYSTEMATICS AND EVOLUTION,2011,295(40547):119-128.
APA Zhang, Xiao-Lin.,Li, Xiao-Xia.,Ni, Le-Yi.,Guo, You-Hao.,Zhang, XL .,...&yhguo@whu.edu.cn.(2011).When interspecific prezygotic barriers break down: hybridization between two Potamogeton species (P. wrightii and P. perfoliatus) and comparison of the artificial and natural hybrids.PLANT SYSTEMATICS AND EVOLUTION,295(40547),119-128.
MLA Zhang, Xiao-Lin,et al."When interspecific prezygotic barriers break down: hybridization between two Potamogeton species (P. wrightii and P. perfoliatus) and comparison of the artificial and natural hybrids".PLANT SYSTEMATICS AND EVOLUTION 295.40547(2011):119-128.
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