(1.College of Life Sciences，Northeast Forestry University，Harbin，Heilongjiang 150040；2.Harbin Allium Agricultural Science and Technology Co Ltd，Acheng，Heilongjiang 150300)
Low seed germination rate limited the hybridization breeding research progress of potato onion.The germination tests were conducted to examine the seed vigor traits in 10 inbred lines and 8 F1 hybrids of potato onion.The results showed that the germination rate and germination vigor were obviously different among inbred lines，varying from 33.18% to 87.05% and 13.58% to 51.87%，respectively.The germination rate and germination vigor of ‘Maba No.1’ were 87.05% and 51.87%，higher than the control.There were no notable difference between ‘MB01-79A’ line and the control.Others were lower than the control.For the seeds of F1 hybrids，the germination rate and germination vigor also were great different，varying from 41.70% to 88.61% and 25.48% to 60.25%，respectively.The germination rate and germination vigor of ‘Zhucong No.1’ was 88.61% and 57.60%，the combination of ‘Holland red’בMaba No.1’ was 87.41% and 60.25%，both higher than the control.The combination of ‘KA2065’בWMF01-06C’ was almost the same as the control.Others were lower than the control.Our results might be useful to breed hybrid of stronger germination ability in potato onion.