European flint landraces grown in situ reveal adaptive introgression from modern maize.

ABSTRACT: We have investigated the role of selection in the determination of the detected levels of introgression from modern maize hybrid varieties into maize landraces still cultivated in situ in Italy. We exploited the availability of a historical collection of landraces undertaken before the introduction and widespread use of modern maize, to analyse genomic changes that have occurred in these maize landraces over 50 years of co-existence with hybrid varieties. We have combined a previously published SSR dataset (n=21) with an AFLP loci dataset (n=168) to provide higher resolution power and to obtain a more detailed picture. We show that selection pressures for adaptation have favoured new alleles introduced by migration from hybrids. This shows the potential for analysis of historical introgres

SUBMITTER: Bitocchi E 

PROVIDER: S-EPMC4390310 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature