Genotyping ex situ trees of Abies nebrodensis translocated from the original Sicilian population to enrich the gene pool  

作　　者：Anna De Rogatis Fulvio Ducci Serena Guerri Angela Teani Roberta Proietti 

机构地区：[1]CREA,Research Centre for Agriculture and Environment,Via di Saliceto 80,40123 Bologna,Italy [2]CREA,Research Centre for Forestry and Wood,Viale Santa Margherita 80,52100 Arezzo,Italy [3]Comprehensive Institute Venturino Venturi of Loro Ciuff enna Arezzo,Via Genova 12,52024 Loro Ciuff enna(AR),Italy

出　　处：《Journal of Forestry Research》2023年第4期1095-1106,共12页林业研究（英文版）

基　　金：funded by the Italian Ministry for Agriculture,Food and Forestry Policies in the framework of the“FAO-RGV(FAO-Vegetal Genetic Resources)Project”.

摘　　要：As a dynamic ex situ conservation strategy,a clonal seed orchard was started in a nursery in Pomaio(POM)in central Italy in 1993 for an assisted migration experiment of Abies nebrodensis(Lojac.)Mattei.Two artifi cial ex situ populations were planted with this gene pool:a seedling arboretum in Pieve Santo Stefano(PSS)and a small dendrological collection in Papiano(PAP),both originating from the Sicilian relict population.Here,using AFLP markers,we estimated the relatedness among the relocated genotypes of the three collections to check whether the three collections had suffi cient genetic variability to be considered as additional sources of variability to the original gene pool for the assisted migration strategy.High individual genetic variability was found in the collections;each plant had a diff erent genotype and was confi rmed to belong to its population of origin.PAP and PSS trees were shown to be only from the original population of A.nebrodensis species and were derived from a limited set of maternal fertile genotypes.Based on the Sicilian fi r population inventory,nursery production in Sicily,and structure clustering analysis,close genetic relationships among POM,PAP and several PSS trees(1–35)were evident.Similarly,the PSS group(36–78)was genetically close to tree 1 of POM and in a lesser proportion to plants 7 and 9 of POM.The sampling of seedlings used to form batches in the nursery might have infl uenced the structure of the resultant plantations.All genotypes will be useful for enriching the original gene pool.

关 键 词：Sicilian fir GENOTYPING Ex situ conservation Gene pool Assisted migration 

分 类 号：S791.243[农业科学—林木遗传育种]