Effects of 2,4-D Seed Soaking Treatment on Leek Seed Germination and Seedling Early Growth

The leek seed of different concentrations and different time of 2,4-D solution soaking treatment was studied,the results showed that: 0.5-10 mg/L 2,4-D solution soaking promoted seed germination,100 mg/L 2,4-D solution soaking inhibited seed germination,and 0.5-1 mg/L 2,4-D solution soaking promoted seedling growth significantly.vigor index,root length,plant weight gained the maximum value under 1 mg/L 2,4-D solution soaking,and it had significant inhibition for growth of the seedling above 10 mg/L 2,4-D solution soaking.1 mg/L 2,4-D solution soaking had the best effect on leek seed germination and seedling growth.