气候变化领域集成服务门户(CCPortal): Effects of pollen contamination and non-random mating on inbreeding and outbreeding depression in a seedling seed orchard of Eucalyptus urophylla

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DOI	10.1016/j.foreco.2019.01.050
	Effects of pollen contamination and non-random mating on inbreeding and outbreeding depression in a seedling seed orchard of Eucalyptus urophylla
	Pupin S.; Sebbenn A.M.; Cambuim J.; da Silva A.M.; Zaruma D.U.G.; Silva P.H.M.; Rosse L.N.; Souza I.C.G.; Marino C.L.; Moraes M.L.T.
发表日期	2019
ISSN	0378-1127
起始页码	272
结束页码	281
卷号	437
英文摘要	Microsatellite loci were used to assess pollen contamination and mating patterns in an Eucalyptus urophylla seedling seed orchard (SO2) along with inbreeding and outbreeding depression in a second generation progeny test (PT2) established with SO2 seeds. We measured survival, diameter at breast height (DBH), and height (H) in SO2, PT2, and two other stands (SO1, PT) located at a distance of at least 210 m from SO2. Pollen contamination was substantial (11.9%), with the largest proportion coming from the closer SO1 stand (6.1%) than PT (4.7%) and 1.1% from unknown sources. The pollen dispersal pattern was isolation by distance but reached long distances (600 m). PT2 offspring were mainly the result of outcrossing (92.6%), but mating in SO2 was not random due to self-fertilization (7.4%), mating among relatives (6.6%), correlated mating (13.7%), and high male fertility success of trees with large DBH. Thus, families are a mixture of different levels of relatedness and some inbreeding (12.7%). Inbreeding depression was variable among traits; it was higher for selfing (39.6–49.5%) than mating among relatives (11.6–20.9%) and higher for mating between full-sibs (4.4%) than half-sibs (2.2%). Outbreeding depression was higher for pollen immigration from less improved sources (33.9–41.2%). Non-random mating resulted in a coancestry (0.152) higher than expected for half-sib families and an overestimation of heritability by 17.8%. Our results indicate that isolation distances greater than 600 m are necessary to avoid pollen contamination in Eucalyptus seed orchards. Furthermore, pollen immigration results in outbreeding depression, and selfing results in higher levels of inbreeding depression than mating among related trees. © 2019
英文关键词	Eucalyptus; Gene flow; Microsatellite loci; Parentage analysis; Seedling seed orchard; Tree improvement
语种	英语
scopus关键词	Contamination; DNA sequences; Forestry; Eucalyptus; Gene flows; Microsatellite loci; Parentage analysis; Seed orchard; Tree improvement; Orchards; autogamy; diameter; evergreen tree; gene flow; genetic marker; heritability; inbreeding depression; orchard; parentage; pollen; pollution; relatedness; reproductive strategy; seed; seedling; survival; Eucalyptus; Forestry; Pollen; Pollution; Seed Orchards; Trees; Eucalyptus; Eucalyptus urophylla
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156150
作者单位	Universidade Estadual de São Paulo (UNESP/Ilha Solteira), Av. Brasil Centro, 56, CP 31, CEP 15385-000, Ilha SolteiraSão Paulo State, Brazil; Instituto Florestal de São Paulo (IF), CP 1322, CEP 01059-970São Paulo State, Brazil; Universidade Estadual Paulista (UNESP/Botucatu), Rua José Barbosa de Barros, 1780, CEP 18.603-970, Botucatu, São Paulo State, Brazil; Instituto de Pesquisas e Estudos Florestais (IPEF), Via Comendador Pedro Morganti, 3500, CEP 13.415-000, Piracicaba, São Paulo State, Brazil; Eldorado Brasil, Rodovia BR 158 – km 231, CEP 79.641-300, Três Lagoas, Mato Grosso do Sul State, Brazil; Suzano Papel e Celulose, Avenida Dr. José Lembo, 2215, CEP 18207-780, Itapetininga, São Paulo State, Brazil
推荐引用方式 GB/T 7714	Pupin S.,Sebbenn A.M.,Cambuim J.,et al. Effects of pollen contamination and non-random mating on inbreeding and outbreeding depression in a seedling seed orchard of Eucalyptus urophylla[J],2019,437.
APA	Pupin S..,Sebbenn A.M..,Cambuim J..,da Silva A.M..,Zaruma D.U.G..,...&Moraes M.L.T..(2019).Effects of pollen contamination and non-random mating on inbreeding and outbreeding depression in a seedling seed orchard of Eucalyptus urophylla.Forest Ecology and Management,437.
MLA	Pupin S.,et al."Effects of pollen contamination and non-random mating on inbreeding and outbreeding depression in a seedling seed orchard of Eucalyptus urophylla".Forest Ecology and Management 437(2019).