Molecular characterization of intergeneric hybrids between Malus and Pyrus  

作　　者：Giulia Pasqualetto Luisa Palmieri Stefan Martens Vincent G.M.Bus David Chagné Claudia Wiedow Mickael A.Malnoy Susan E.Gardiner 

机构地区：[1]Research and Innovation Centre,Edmund Mach Foundation,San Michele all’Adige,TN 38010,Italy [2]Department of Agricultural,Food,Environmental and Animal Sciences,University of Udine,UD 33100,Italy [3]The New Zealand Institute for Plant and Food Research Ltd(PFR),Hawke’s Bay Research Centre,Havelock North 4442,New Zealand [4]PFR,Fitzherbert Science Centre,Palmerston North,New Zealand

出　　处：《Horticulture Research》2023年第1期172-182,共11页园艺研究（英文）

基　　金：This work was funded by The Autonomous Province of Trento,Italy(ADP);a PhD fellowship to GM co-funded by FEM and PFR.We are grateful to Dr Lester Brewer and Richard Volz for performing intergeneric crosses in the field.We thank Dr Diego Micheletti(Fondazione Edmund Mach,Italy)for his assistance with the analysis of the SNP dataset from the array。

摘　　要：Apple(Malus)and pear(Pyrus)are economically important fruit crops well known for their unique textures,f lavours,and nutritional qualities.Both genera are characterised by a distinct pattern of secondary metabolites,which directly affect not only resistance to certain diseases,but also have significant impacts on the f lavour and nutritional value of the fruit.The identical chromosome numbers,similar genome size,and their recent divergence date,together with DNA markers have shown that apple and pear genomes are highly co-linear.This study utilized comparative genomic approaches,including simple sequence repeats,high resolution single nucleotide polymorphism melting analysis,and single nucleotide polymorphism chip analysis to identify genetic differences among hybrids of Malus and Pyrus,and F2 offspring.This research has demonstrated and validated that these three marker types,along with metabolomics analysis are very powerful tools to detect and confirm hybridity of progeny derived from crosses between apple and pear in both cross directions.Furthermore,this work analysed the genus-specific metabolite patterns and the resistance to fire blight(Erwinia amylovora)in progeny.The findings of this work will enhance and accelerate the breeding of novel tree fruit crops that benefit producers and consumers,by enabling marker assisted selection of desired traits introgressed between pear and apple.

关 键 词：CROPS utilized BREEDING 

分 类 号：S661.1[农业科学—果树学]