气候变化领域集成服务门户(CCPortal): Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson

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DOI	10.1007/s11056-024-10034-0
	Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson
	Aparicio, Alejandro Gabriel; El Mujtar, Veronica Andrea; Azpilicueta, Maria Marta; Martinez-Meier, Alejandro Gabriel; Mondino, Victor Alejandro
发表日期	2024
ISSN	0169-4286
EISSN	1573-5095
英文摘要	In the Andean-Patagonian region of Argentina, Pinus ponderosa Douglas ex C. Lawson is the most widely cultivated forest tree species. Its breeding program, started in 1998, is now progressing towards the establishment of 1.5 generation clonal seed orchards. Considering recent advances in the phylogeny and taxonomy of the species, it is necessary to delve deeper into the genetic variation of the breeding population. Here, we first aim to address a previously unresolved question concerning the putative genetic lineages (varieties) of P. ponderosa that were introduced from the USA. We assessed this question through the molecular characterization of the nad1 second intron minisatellite of the mitochondrial genome of 61 plus trees planted in 1.0 clonal seed orchards, followed by Sanger sequencing to determine mtDNA haplotypes. Then, we conducted a nursery common garden trial to determine the relative contribution of the genetic factors (lineages and clones) to the variation in early growth traits, which may reflect adaptation across native geographic ranges and are also important for nursery stock production. We found three mtDNA variants, which correspond to haplotypes H1, H5 and H8, form the North-West native range of the species. In general, the variation in early seedling growth traits was not attributable to the haplotypic groups; instead, variation among clones was high and heritable. Considering the initial performance of the breeding population, it appears feasible to manage 1.0 and 1.5 clonal seed orchards by maintaining sub-specific taxa mixed together, while assessing the potential impact of intra-specific hybridization and field performance of progeny for timber production and resilience to climate change.
英文关键词	North-American conifers; Subsection Ponderosae; Exotic tree breeding
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:001176411300001
来源期刊	NEW FORESTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299852
作者单位	Instituto Nacional de Tecnologia Agropecuaria (INTA); Instituto Nacional de Tecnologia Agropecuaria (INTA); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Instituto Nacional de Tecnologia Agropecuaria (INTA)
推荐引用方式 GB/T 7714	Aparicio, Alejandro Gabriel,El Mujtar, Veronica Andrea,Azpilicueta, Maria Marta,et al. Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson[J],2024.
APA	Aparicio, Alejandro Gabriel,El Mujtar, Veronica Andrea,Azpilicueta, Maria Marta,Martinez-Meier, Alejandro Gabriel,&Mondino, Victor Alejandro.(2024).Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson.NEW FORESTS.
MLA	Aparicio, Alejandro Gabriel,et al."Mitochondrial DNA lineages and genetic variation of early growth traits in the Argentinean breeding population of Pinus ponderosa Douglas ex C. Lawson".NEW FORESTS (2024).