Author:
Cseh András,Poczai Péter,Kiss Tibor,Balla Krisztina,Berki Zita,Horváth Ádám,Kuti Csaba,Karsai Ildikó
Abstract
AbstractHistorical wheat landraces are rich sources of genetic diversity offering untapped reservoirs for broadening the genetic base of modern varieties. Using a 20K SNP array, we investigated the accessible genetic diversity in a Central European bread wheat landrace collection with great drought, heat stress tolerance and higher tillering capacity. We discovered distinct differences in the number of average polymorphisms between landraces and modern wheat cultivars, and identified a set of novel rare alleles present at low frequencies in the landrace collection. The detected polymorphisms were unevenly distributed along the wheat genome, and polymorphic markers co-localized with genes of great agronomic importance. The geographical distribution of the inferred Bayesian clustering revealed six genetically homogenous ancestral groups among the collection, where the Central European core bared an admixed background originating from four ancestral groups. We evaluated the effective population sizes (Ne) of the Central European collection and assessed changes in diversity over time, which revealed a dramatic ~ 97% genetic erosion between 1955 and 2015.
Funder
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
Research and Innovation Action of the European Union
Marie Skłodowska-Curie Fellowship Grant
LUOMUS Trigger fund
OECD CRP Fellowship
iASK Research Grant
Eötvös Research Grant
Publisher
Springer Science and Business Media LLC
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献