不同浓度GA_3处理对头花蓼种子发芽指标的影响

目的]探讨GA3对头花蓼种子发芽的影响。方法]以头花蓼种子为材料,将其浸泡在初始温度为45℃的温水中24 h后,再转入0（CK）、25.00、50.00、75.00、100.00 mg/L的GA3溶液中浸泡24 h,进行发芽试验,测定其种子的发芽率、发芽势、发芽指数及活力指数等指标。结果]发芽率和发芽指数以75.00 mg/LGA3为最佳,分别达到88.00%和4.08;发芽势及活力指数则以50.00 mg/LGA3为最佳,分别达到60.00%和10.16;综合各指标来看以50.00 mg/LGA3和75.00 mg/LGA3对头花蓼种子的促进发芽效果最好。结论]GA3对头花蓼种子发芽具有促进作用,与对照相比较,各浓度浸泡后的种子发芽指标均有所提高。

Effects of Different GA_3 Concentrations Treatments on Germination Index of Polygonum capitatum Seeds

Objective]The aim was to discuss the effect of GA3on germination of Polygonum capitatum seeds.Method]Polygonum capitatum seeds were selected as materials and soaked in warm water for 24 hours with 45 ℃ of initial temperature,then,soaked the seeds into GA3 solution of 0(CK),25.00,50.00,75.00,100.00 mg/L,separately for 24 hours,thereby,the germination experiment was carried out to determine the germination percentage,germinability,germination index and vitality index etc.Result]The germination percentage and germination index of 75.00 mg/L were the best,and came up to 88.00%and 4.08,respectively.While germinability and vitality index of 50.00 mg/L were the best,they came up to 60.00% and 10.16,respectively.That indicates that liquor concentration of 50.00 and 75.00 mg/L were most beneficial to the germination of Polygonum capitatum seeds.Conclusion]GA3 had the promotion effect to the germination of Polygonum capitatum seeds.Comparing with control groups,the germination index of seeds in different GA3 concentrations improved a lot.