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  1. 070 農学部, 大学院農学研究科
  2. 0701 学術論文

Kinship between parents reduces offspring fitness in a natural population of Rhododendron brachycarpum

http://hdl.handle.net/10091/10762
http://hdl.handle.net/10091/10762
6ef1fde9-a876-41ee-a2a2-8a4145b50ffd
名前 / ファイル ライセンス アクション
Kinship_parents_reduces_offspring_fitness.pdf Kinship_parents_reduces_offspring_fitness.pdf (402.7 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2010-11-12
タイトル
タイトル Kinship between parents reduces offspring fitness in a natural population of Rhododendron brachycarpum
言語
言語 eng
DOI
関連識別子 https://doi.org/10.1093/aob/mcq018
関連名称 10.1093/aob/mcq018
キーワード
主題 Biparental inbreeding depression, genetic structure, germination rate, Rhododendron brachycarpum, seed maturation, selfing rate, survival rate
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Hirao, Akira S.

× Hirao, Akira S.

Hirao, Akira S.

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出版者
出版者 OXFORD UNIV PRESS
引用
内容記述 Annals of Botany. 105(4):637-646 (2010)
書誌情報 Annals of Botany

巻 105, 号 4, p. 637-646, 発行日 2010-04
内容記述
内容記述タイプ Other
内容記述 This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Annals of Botany following peer review. The definitive publisher-authenticated version, Akira S. Hirao, Kinship between parents reduces offspring fitness in a natural population of Rhododendron brachycarpum, Annals of Botany, 105(4), APR 2010, pp.637-646 is available online at: http://aob.oxfordjournals.org/content/105/4/637
抄録
内容記述 Background and Aims A reduction in offspring fitness resulting from mating between neighbours is interpreted as biparental inbreeding depression. However, little is known about the relationship between the parents' genetic relatedness and biparental inbreeding depression in their progeny in natural populations. This study assesses the effect of kinship between parents on the fitness of their progeny and the extent of spatial genetic structure in a natural population of Rhododendron brachycarpum. Methods Kinship coefficients between 11 858 pairs of plants among a natural population of 154 R. brachycarpum plants were estimated a priori using six microsatellite markers. Plants were genotyped, and pairs were selected from among 60 plants to vary the kinship from full-sib to unrelated. After a hand-pollination experiment among the 60 plants, offspring fitness was measured at the stages of seed maturation (i.e. ripening) under natural conditions, and seed germination and seedling survival under greenhouse conditions. In addition, spatial autocorrelation was used to assess the population's genetic structure. Key Results Offspring fitness decreased significantly with increasing kinship between parents. However, the magnitude and timing of this effect differed among the life-cycle stages. Measures of inbreeding depression were 0.891 at seed maturation, 0.122 (but not significant) at seed germination and 0.506 at seedling survival. The local population spatial structure was significant, and the physical distance between parents mediated the level of inbreeding between them. Conclusions The level of inbreeding between individuals determines offspring fitness in R. brachycarpum, especially during seed maturation. Genetic relatedness between parents caused inbreeding depression in their progeny. Therefore, biparental inbreeding contributes little to reproduction and instead acts as a selection force that promotes outcrossing, as offspring of more distant (less related) parents survive better.
資源タイプ(コンテンツの種類)
ISSN
収録物識別子タイプ ISSN
収録物識別子 0305-7364
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00532275
PubMed
識別子タイプ PMID
関連識別子 https://pubmed.ncbi.nlm.nih.gov/20202970/
関連名称 20202970
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
WoS
URL http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000276544200025
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