Classification of Welsh Onion Cultivars by RAPD

RAPD analysis was used to determine the genetic relationship of 24 welsh onion (Allium fistulosum L.) accessions. Fourteen random primers were tested and two primers which showed polymorphism were selected. The amplified fragments ranged from 0.10 to 2.00 kb in size. The total number of polymorphic bands scored was 54 (19%). From cluster analysis, 24 accessions were separated into three major groups: Nineteen out of 24 accessions that belonged to ‘Seol Poong’ groups were divided into four subgroups. Also three out of 24 accessions that belonged to ‘Kincho’ groups were divided into two subgroups. And two out of 24 accessions that belonged to ‘Kincho 3go’ groups were divided into two cultivars.