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In this study, we quantified the compatibility among Magnolia stellata, M. salicifolia, and their hybrids in a hybrid zone using gene dispersal modeling. METHODS: After determining the genealogical classes of adult trees in the hybrid zone, the paternity of 574 open-pollinated seeds from 37 known maternal trees was analyzed with microsatellite markers. A neighborhood-based Bayesian gene dispersal model developed by us for estimating compatibility was then applied to the paternity data. KEY RESULTS: When M. stellata or M. salicifolia were mothers, interspecific mating to produce F1 hybrids yielded significant incompatibility, but backcrossing with F1 hybrids did not. Furthermore, when F1 hybrids became mothers, no significant incompatibility resulted from backcrossing to parental species or intra-F1 mating to produce F2 hybrids. The estimated proportion of F1 hybrids in the outcrossed seeds (1.7%) in the hybrid zone was much lower than that in the adult trees (14.0%). 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Reduced incompatibility in the production of second generation hybrids between two Magnolia species revealed by Bayesian gene dispersal modeling
http://hdl.handle.net/2237/27224
http://hdl.handle.net/2237/27224db5bb9fb-177e-49c1-bbed-7a2d00dc4106
名前 / ファイル | ライセンス | アクション |
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Tamaki_et_al_acceptedMS_2017_AJB.pdf (544.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-01-05 | |||||
タイトル | ||||||
タイトル | Reduced incompatibility in the production of second generation hybrids between two Magnolia species revealed by Bayesian gene dispersal modeling | |||||
言語 | en | |||||
著者 |
Tamaki, Ichiro
× Tamaki, Ichiro× Tani, Saori× Suzuki, Setsuko× Ueno, Saneyoshi× Wadasaki, Naotaka× Tomaru, Nobuhiro |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Bayesian clustering | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | interspecific hybrids | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | interspecific mating | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | introgression | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Magnoliaceae | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | neighborhood model | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | NewHybrids | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | pollen dispersal | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | simple sequence repeat (SSR) | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | parentage analysis | |||||
抄録 | ||||||
内容記述 | PREMISE OF THE STUDY: Hybrid zones are areas where gene flow between related species is currently occurring, so information on the compatibility between related species and their hybrids is essential for predicting the dynamics of such zones generated by introgressive hybridization. In this study, we quantified the compatibility among Magnolia stellata, M. salicifolia, and their hybrids in a hybrid zone using gene dispersal modeling. METHODS: After determining the genealogical classes of adult trees in the hybrid zone, the paternity of 574 open-pollinated seeds from 37 known maternal trees was analyzed with microsatellite markers. A neighborhood-based Bayesian gene dispersal model developed by us for estimating compatibility was then applied to the paternity data. KEY RESULTS: When M. stellata or M. salicifolia were mothers, interspecific mating to produce F1 hybrids yielded significant incompatibility, but backcrossing with F1 hybrids did not. Furthermore, when F1 hybrids became mothers, no significant incompatibility resulted from backcrossing to parental species or intra-F1 mating to produce F2 hybrids. The estimated proportion of F1 hybrids in the outcrossed seeds (1.7%) in the hybrid zone was much lower than that in the adult trees (14.0%). CONCLUSIONS: While it is difficult to obtain F1 hybrids, their low incompatibility makes it easy to produce advanced generation hybrids, once they have been successfully obtained. Although the production of F1 seeds is rare, heterosis and/or weak selection pressure in an empty niche between the parental species’ niches may have contributed to the increased proportion of adult F1 hybrids in the hybrid zone. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Botanical Society of America | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.3732/ajb.1700138 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0002-9122 | |||||
書誌情報 |
en : American Journal of Botany 巻 104, 号 10, p. 1546-1555, 発行日 2017-10 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://doi.org/10.3732/ajb.1700138 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/27224 | |||||
識別子タイプ | HDL |