Abstract
AbstractPowdery mildew of oats is a major threat to intensive oat farming under humid climate, and the use of resistant cultivars is the most environmentally friendly way of achieving safe yields. In this study, the genetic mapping of unexplored resistance genes from Avena byzantina accessions AVE2406 and AVE2925, designated Pm9 and Pm10, is described. Both accessions were crossed with susceptible cultivars, and monogenic segregation was established based on detached leaf segment tests. The two recombinant inbred line (RIL) populations RIL29 (with AVE2925) and RIL24 (with AVE2406) were phenotyped for powdery mildew resistance and genotyped with DArTseq. The genetic map of RIL24 had 2,516 markers in 30 linkage groups with a length of 2,641.5 cM; for RIL29, 921 markers were allocated to 30 linkage groups totalling to 1,378.2 cM. A major resistance QTL in RIL24 harbouring Pm9 was mapped to Mrg21 of the consensus map using BLASTn analysis. For RIL29, a QTL was found on Mrg03. The results support that at least Pm9 is different from the powdery mildew resistance genes mapped so far.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
