DOI: 10.1016/j.foreco.2013.04.030
Scopus记录号: 2-s2.0-84878116407
论文题名: Effects of genetic and environmental factors on clonal reproduction in old-growth natural populations of Cryptomeria japonica
作者: Kimura M.K. ; Kabeya D. ; Saito T. ; Moriguchi Y. ; Uchiyama K. ; Migita C. ; Chiba Y. ; Tsumura Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 10
结束页码: 19
语种: 英语
英文关键词: Clonality
; Conifer
; Environmental conditions
; Genetic cluster
; Genetic structure
Scopus关键词: Clonality
; Conifer
; Environmental conditions
; Genetic cluster
; Genetic structure
; Parameter estimation
; Population statistics
; Snow
; Snow melting systems
; Forestry
; autocorrelation
; basal area
; clonal growth
; coniferous forest
; environmental conditions
; environmental disturbance
; environmental factor
; genetic marker
; genetic structure
; old-growth forest
; parameterization
; seedling establishment
; Biological Populations
; Forestry
; Melting
; Snow
; Softwoods
; Statistics
; Japan
英文摘要: Clonal reproduction is a crucial factor shaping the demography and genetic structure of many plant populations. However, we still do not understand the extent to which environmental and genetic factors influence clonal reproduction. Natural forests of Cryptomeria japonica are distributed under a range of environmental conditions in the Japanese Archipelago. In this study, the spatial genetic structures of 13 natural old-growth C. japonica forest plots of about 0.25. ha were investigated using eight nuclear microsatellite markers. Clonal reproduction was detected in 10 plots, the clonal frequency in each plot varied. Patterns of spatial genetic structure at the ramet level showed significant positive autocorrelation over short distances, which may reflect clonal reproduction and the limited extent to which seedlings establish in gaps. The clonality of individual genets was influenced by the Q value of cluster 1 of the results of STRUCTURE analysis as the genetic factor, snow depth as the environmental factor, the average basal area (BA) and the interaction between Q value and snow depth. This result indicated that clonal genets had low Q values for cluster 1 and small BA, especially in regions experiencing heavy snow. On the other hand, the average BA had a negative effect for a number of ramets, however the parameter estimate was small. Our results suggest that clonal reproduction may have been the most important of the strategies exploited in order to establish in harsh environments like frequent disturbance conditions such as heavy snow region in this species. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66497
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Genetics, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan; Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan; Department of Forest Vegetation, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan; Research Planning and Coordination Department, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan; Graduate School of Science and Technology, Niigata University, 8050, Igarashi 2-Nocho, Nishi-ku Niigata 950-2181, Japan
Recommended Citation:
Kimura M.K.,Kabeya D.,Saito T.,et al. Effects of genetic and environmental factors on clonal reproduction in old-growth natural populations of Cryptomeria japonica[J]. Forest Ecology and Management,2013-01-01,304