2,4-D浸种处理对韭葱种子发芽和幼苗早期生长的影响

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

对韭葱种子进行不同浓度和不同时间的2,4-D溶液浸种处理,结果表明:0.5～10 mg/L对种子发芽有一定促进作用,100 mg/L对种子发芽有抑制作用;0.5～1 mg/L对幼苗的生长有极显著促进作用,1 mg/L其活力指数、根长、株重均达最大值,10 mg/L以上对幼苗的生长产生了极显著抑制作用;以1 mg/L处理12 h对韭葱种子发芽和幼苗早期生长的影响效果最好。

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 l0 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.