Molecular and genetic characterization of the Ry_adg locus on chromosome XI from Andigena potatoes conferring extreme resistance to potato virus Y.

ABSTRACT:

Key message

We have elucidated the Andigena origin of the potato Ry_adg gene on chromosome XI of CIP breeding lines and developed two marker assays to facilitate its introgression in potato by marker-assisted selection. Potato virus Y (PVY) is causing yield and quality losses forcing farmers to renew periodically their seeds from clean stocks. Two loci for extreme resistance to PVY, one on chromosome XI and the other on XII, have been identified and used in breeding. The latter corresponds to a well-known source of resistance (Solanum stoloniferum), whereas the one on chromosome XI was reported from S. stoloniferum and S. tuberosum group Andigena as well. To elucidate its taxonomic origin in our breeding lines, we analyzed the nucleotide sequences of tightly linked marker

SUBMITTER: Herrera MDR 

PROVIDER: S-EPMC6096621 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature