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SUMMARY
An F2 population obtained from a cross between a low-morphine poppy plant from our own selection line and a high-morphine plant from the Hungarian poppy variety ‘Cosmos’ was investigated. The segregation of six morphological traits was detected during the vegetative phase of plant development as well as on harvested capsules; 125 molecular markers were detected, 77 as AFLP and 48 as RAPD markers.
A total of 87 marker loci (66% of the total number) were placed in 16 linkage groups, which is five more than the haploid chromosome number of opium poppy (n = 11). Linkage analysis and map construction were performed by MAPMAKER 3.0. Eleven major linkage groups contained 4–12 loci whereas five minor groups comprised 2–3 loci. Only one morphological marker (ns) could be linked so far.