赤霉素浓度对苜蓿种子萌发的影响

以公农1号紫花苜蓿和呼伦贝尔黄花苜蓿2种苜蓿品种为材料,采用培养皿纸上发芽法,研究不同浓度赤霉素处理（以蒸馏水处理作为对照）对苜蓿种子萌发和幼苗生长的影响。结果表明：公农1号紫花苜蓿种子发芽势、发芽率、发芽指数、发芽速度以及根长随着赤霉素浓度的增加表现出先增加后降低的趋势,赤霉素浓度为50 mg/L时效果最好;呼伦贝尔黄花苜蓿种子发芽势、发芽率、发芽指数、发芽速度以及根长随着赤霉素浓度的增加表现出逐渐增加的趋势,赤霉素浓度为200 mg/L时效果最好。

Effects of Different Concentrations of Gibberellin on Seed Germination of Alfalfa

The effects of gibberellin treatment with different concentrations using distilled water treatment as control were investigated on germination and seedling growth of alfalfa seeds using the paper germination method on Petri dishes. The results showed that the germination potential, germination percentage, germination index, germination speed and root length of Medicago sativa Gongnong NO.1 seeds showed an increasing and then decreasing trend with the elevation of gibberellin concentration, while the 50 mg/L gibberellin treatment showed the most significant effect; the germination potential, germination percentage, germination index, germination speed, and root length of Medicago falcate Hulun Buir seeds showed a gradual increase with increasing gibberellin concentration, with the best results at gibberellin concentration of 200 mg/L.