锌胁迫对蓝花鼠尾草种子萌发的影响

Effects of Zinc Stress on Seed Germination of Salvia farinacea

以蓝花鼠尾草种子为试验材料,研究浓度为0、20、40、60、80、100、120、140、160 mg/L的硫酸锌溶液处理对种子发芽率、发芽势、发芽指数和活力指数以及幼苗生长的影响。结果表明,在锌溶液浓度为20~60 mg/L条件下,蓝花鼠尾草种子发芽率、发芽势、发芽指数均表现升高;种子活力指数在锌溶液浓度为20 mg/L时达到最大。在80 mg/L锌溶液浓度处理下平均苗高最高,而在140~160 mg/L锌溶液处理下种子发芽率、发芽势、发芽指数、根长与苗高均明显受到抑制,甚至发生死亡现象。

The effects of zinc sulfate solution at concentrations of 0,20,40,60,80,100,120,140,and 160 mg/L on seed germination rate,germination potential,germination index,vigor index,and seedling growth were studied with Salvia farinacea seeds as experimental materials.The results showed that the seed germination rate,germination potential and germination index of S.farinacea increased under the cultivation of 20~60 mg/L zinc solution.Seed vigor index reached maximum at 20 mg/L.Under the treatment of 80 mg/L zinc solution concentration,the average seedling height was the highest.The seed germination rate,germination potential,germination index,root length and seedling height were significantly inhibited under 140~160 mg/L zinc solution,and even some seeds died.