globalchange  > 全球变化的国际研究计划
DOI: 10.1111/plb.12982
WOS记录号: WOS:000473626000015
论文题名:
Microgeographic variation in recruitment under adult trees: arrival of new genotypes or perpetuation of the existing ones?
作者: Castilla, A. R.1,2; Godoy, J. A.2; Delibes, M.3; Rodriguez-Prieto, A.4; Fedriani, J. M.1,3,5
通讯作者: Castilla, A. R.
刊名: PLANT BIOLOGY
ISSN: 1435-8603
EISSN: 1438-8677
出版年: 2019
卷: 21, 期:4, 页码:695-705
语种: 英语
英文关键词: Clonality ; genetic structure ; herbivory ; likelihood ; multilocus genotypes ; Pyrus bourgaeana ; saplings ; sexual reproduction
WOS关键词: POPULATION-STRUCTURE ; SEXUAL REPRODUCTION ; GENETIC-STRUCTURE ; PYRUS-BOURGAEANA ; SEED DISPERSAL ; IBERIAN PEAR ; CLONAL DIVERSITY ; CLIMATE-CHANGE ; PLANT ; PROGRAM
WOS学科分类: Plant Sciences
WOS研究方向: Plant Sciences
英文摘要:

Investigating spatial variation in the relative importance of sexual reproduction and clonal propagation is critical to obtain more accurate estimates of future effective population sizes and genetic diversity, as well as to identify ecological correlates of clonality. We combined a stratified sampling scheme with microsatellite genetic analyses to estimate variation in the proportion of sexual versus clonal recruits among saplings in five populations of the tree Pyrus bourgaeana. Using a likelihood framework, we identified clones among the genotypes analysed and examined variation among populations regarding the proportion of saplings coming from clonal propagation. We also examined the relationship between the relative abundance of clonal shoots across the studied populations and their herbivory levels. Our results revealed that one third of the saplings examined (N = 225 saplings) had a probability above 0.9 of being clones of nearby (<10 m) trees, with the ratio between clonal propagation and sexual recruitment varying up to eight-fold among populations. A small portion of these putative clonal shoots reached sexual maturity. Relative abundance of clonal shoots did not significantly relate to the herbivory by ungulates. Our results call into question optimistic expectations of previous studies reporting sufficient levels of recruitment under parental trees without animal seed dispersal services. Nevertheless, given that some of these clonal shoots reach sexual maturity, clonal propagation can ultimately facilitate the long-term persistence of populations during adverse periods (e.g. environmental stress, impoverished pollinator communities, seed dispersal limitation).


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/142886
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Univ Lisbon, Inst Super Agron, Ctr Appl Ecol Prof Baeta Neves, INBIO, P-1349017 Lisbon, Portugal
2.CSIC, EBD, Dept Ecol Integrat, Seville, Spain
3.CSIC, EBD, Dept Biol Conservat, Seville, Spain
4.MUSE Museo Sci Trento, Trento, Italy
5.UVEG, CSIC, GV, Ctr Invest Desertificac CIDE, Carretera Moncada Naquera, Valencia, Spain

Recommended Citation:
Castilla, A. R.,Godoy, J. A.,Delibes, M.,et al. Microgeographic variation in recruitment under adult trees: arrival of new genotypes or perpetuation of the existing ones?[J]. PLANT BIOLOGY,2019-01-01,21(4):695-705
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