不同处理方法对和田苜蓿种子发芽率的影响

目的]寻找一种能有效提高和田苜蓿种子发芽率的方法。方法]通过采取热水浸泡处理、98%浓硫酸浸泡处理、100 g/L硝酸钾浸泡处理、磨擦种皮结合热水浸泡处理、30%双氧水浸泡处理等5种不同方法处理和田苜蓿种子,观察测定并研究以上5种处理方法对和田苜蓿种子发芽势、发芽率、发芽指数及活力指数的影响。结果]以磨擦种皮结合25℃热水浸泡30 min处理对和田苜蓿种子发芽率具有明显的效果,可达到81.3%;其次是100 g/L硝酸钾浸种2 h、50℃热水浸泡处理和30%双氧水浸种5 min;用98%浓硫酸处理的效果较差。结论]磨擦种皮结合25℃热水浸泡30 min处理是提高和田苜蓿种子发芽率的最佳方法。

Effects of Different Processing Methods on Germination Rate of Wada Alfalfa Seeds

Objective] To find a processing method to increase germination rate of Wada alfalfa seeds.Method] Five processing methods were used to treat Wada alfalfa seeds,including immersion in hot water,immersion in 98% concentrated sulfuric acid,immersion in 100 g/L potassium nitrate,immersion in hot water after rubbing seed capsule,immersion in 30% hydrogen peroxide.After treatment,germination energy,germination rate,germination index and vitality index were detected.Result] The Wada alfalfa seeds immersed in 25 ℃ water for 25 min after rubbing seed capsule had the highest germination rate(81.3%),followed by that of seeds immersed in 100 g/L potassium nitrate for 2 h,that of seeds immersed in 50 ℃ water,and that of seeds immersed in 30% hydrogen peroxide for 5 min in order.The worst germination appeared in the seeds immersed in 98% concentrated sulfuric acid.Conclusion] Immersion in 25 ℃ water for 25 min after rubbing seed capsule is the best method to increase germination rate of Wada alfalfa seeds.