Almond population genomics and non-additive GWAS reveal new insights into almond dissemination history and candidate genes for nut traits and blooming time  

作　　者：Felipe Pérez de los Cobos Eva Coindre Naima Dlalah Bénédicte Quilot-Turion Ignasi Batlle Pere Arús Iban Eduardo Henri Duval 

机构地区：[1]Fruticultura,Institut de Recerca i Tecnologia Agroalimentàries(IRTA),Mas Bové,Ctra.Reus-El Morell Km 3,843120 ConstantíTarragona,Spain [2]Centre de Recerca en Agrigenòmica(CRAG),CSIC-IRTA-UAB-UB.Institut de Recerca i Tecnologia Agroalimentàries(IRTA),Cerdanyola del Vallès(Bellaterra),08193 Barcelona,Spain [3]Centre for Research in Agricultural Genomics(CRAG)CSIC-IRTA-UAB-UB,Campus UAB,Edifici CRAG,Cerdanyola del Vallès(Bellaterra),08193 Barcelona,Spain [4]INRAE,GAFL,F-84143,Montfavet,France

出　　处：《Horticulture Research》2023年第10期262-272,共11页园艺研究（英文）

摘　　要：Domestication drastically changed crop genomes,fixing alleles of interest and creating different genetic populations.Genome-wide association studies(GWASs)are a powerful tool to detect these alleles of interest(and so QTLs).In this study,we explored the genetic structure as well as additive and non-additive genotype-phenotype associations in a collection of 243 almond accessions.Our genetic structure analysis strongly supported the subdivision of the accessions into five ancestral groups,all formed by accessions with a common origin.One of these groups was formed exclusively by Spanish accessions,while the rest were mainly formed by accessions from China,Italy,France,and the USA.These results agree with archaeological and historical evidence that separate modern almond dissemination into four phases:Asiatic,Mediterranean,Californian,and southern hemisphere.In total,we found 13 independent QTLs for nut weight,crack-out percentage,double kernels percentage,and blooming time.Of the 13 QTLs found,only one had an additive effect.Through candidate gene analysis,we proposed Prudul26A013473 as a candidate gene responsible for the main QTL found in crack-out percentage,Prudul26A012082 and Prudul26A017782 as candidate genes for the QTLs found in double kernels percentage,and Prudul26A000954 as a candidate gene for the QTL found in blooming time.Our study enhances our knowledge of almond dissemination history and will have a great impact on almond breeding.

关 键 词：additive GWAS TRAITS 

分 类 号：S662.9[农业科学—果树学]