Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.05.071 |
Investigating the origin and genetic diversity of improved Eucalyptus grandis populations in Brazil | |
Miranda, Aline C.1; da Silva, Paulo H. M.1,2,3; Moraes, Mario L. T.1,5; Lee, David J.4; Sebbenn, Alexandre M.5,6 | |
2019-09-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
![]() |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 448页码:130-138 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Australia |
英文摘要 | To better understand the genetic variability among and within Eucalyptus grandis populations introduced in Brazil, we use microsatellite loci to investigate the mating system, genetic structure, and Australian origins of several introduced provenances. Our sample includes 981 trees from ten Brazilian populations and 254 trees from 18 Australian populations. Significant higher observed heterozygosity (H-o) and significant lower fixation index (F) was detected in grouped Brazilian provenance (H-o = 0.753, F = 0.140) than in Australian samples (H-o = 0.680, F = 0.220). However, Brazilian samples presented significantly lower genetic differentiation (G(ST)') among populations (0.541) than Australian populations (0.838) indicating that the overall genetic diversity captured in the Brazilian collection is low due to the limited number of populations represented. All sampled Brazilian populations showed 100% correct expectation of attribution to their reference population, showing consistency with historical information. A lower fixation index (F) was detected in Brazilian seed trees ( - 0.101) than their offspring (0.140), suggesting selection against inbred individuals between seedling and adult stages. The outcrossing rate (t(m)) was high (0.994) with low variability among populations (0.921-0.969). However, some mating occurred between related trees (t(m) - t(s) = 0.149) and were correlated (r(p(m)) = 0.113), indicating that some offspring are inbred and families are composed of different levels of relatedness. The coancestry (Theta = 0.141) was higher and the effective size within families (N-e = 3.09) lower than that expected for half-sib families (Theta = 0.125; N-e = 4). Brazilian E. grandis populations offer the possibility to develop new breeding populations with high genetic variability due to their differing origins combined with individual selection. |
英文关键词 | Genetic diversity Heritability Inbreeding Mating system Tree breeding |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000486553900014 |
WOS关键词 | OPEN-POLLINATED PROGENIES ; OUTCROSSING RATE ; INBREEDING DEPRESSION ; SEED ORCHARD ; SELECTION ; POLLEN ; GROWTH ; MICROSATELLITES ; RESISTANCE ; UROPHYLLA |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187052 |
专题 | 气候变化 |
作者单位 | 1.IPEF, Via Comendador Pedro Morganti 3500, BR-13415000 Piracicaba, SP, Brazil; 2.Univ Estadual Sao Paulo UNESP Botucatu, Rua Jose Barbosa de Barros 1780,CP 237, BR-18603970 Botucatu, SP, Brazil; 3.Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Ave Padua Dias 11,CP 9, BR-13418900 Piracicaba, SP, Brazil; 4.Univ Sunshine Coast, Locked Bag 4, Maroochydore, Qld 4558, Australia; 5.Univ Estadual Sao Paulo UNESP Ilha Solteira, Av Brasil Ctr 56,CP 31, BR-15385000 Ilha Solteira, SP, Brazil; 6.Inst Florestal Sao Paulo IF, CP 1322, BR-01059970 Sao Paulo, SP, Brazil |
推荐引用方式 GB/T 7714 | Miranda, Aline C.,da Silva, Paulo H. M.,Moraes, Mario L. T.,et al. Investigating the origin and genetic diversity of improved Eucalyptus grandis populations in Brazil[J]. FOREST ECOLOGY AND MANAGEMENT,2019,448:130-138. |
APA | Miranda, Aline C.,da Silva, Paulo H. M.,Moraes, Mario L. T.,Lee, David J.,&Sebbenn, Alexandre M..(2019).Investigating the origin and genetic diversity of improved Eucalyptus grandis populations in Brazil.FOREST ECOLOGY AND MANAGEMENT,448,130-138. |
MLA | Miranda, Aline C.,et al."Investigating the origin and genetic diversity of improved Eucalyptus grandis populations in Brazil".FOREST ECOLOGY AND MANAGEMENT 448(2019):130-138. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论