摘要
According to different mechanisms of dormancy,seeds of Gagea nigra L.Z.Shue were treated with different methods so as to investigate the effects of different treatments on seed germination of G.nigra.The results showed that at 4 ℃,the seeds of G.nigra began to germinate on day 32 with germination period of 80 d and germination rate of 72%;room temperature（25 ℃） and acid and alkali treatments were all unsuitable for the germination of G.nigra seeds;no significant differences were found in germination rate of G.nigra seeds among warm water（50℃）,ultrasound and 200 mg/L GA_3treatments（P 0.05）;seed coat-removing treatment effectively promoted the germination of G.nigra seeds（P =0.002 0.01） with germination rate of 88%;seed coat piercing ＋ 200 mg/L GA_3 and 500 mg/L GA_3＋15% H_2O_2 treatments effectively promoted the germination of G.nigra seeds with germination rates of 84% and 82%,respectively（P0.05）;the germination vigor of G.nigra seeds in the seed coat piercing ＋ 200 mg/L GA_3 treatment was highest,and it was significantly higher than those in the other treatments.
以新疆黑鳞顶冰花种子为实验对象,根据不同休眠机制选取10余种处理方法进行处理,以此比较其对顶冰花种子萌发的影响。研究结果显示:黑鳞顶冰花种子4℃时32 d左右开始萌发,萌发周期80 d左右,萌发率为72%;室温25℃和酸碱处理不适宜萌发;50℃温水、超声波和200 mg/LGA_3处理均无显著性差异(P>0.05);去除种皮极有效促进其萌发(P=0.002<0.01),萌发率达到88%;刺破种皮+200 mg/L GA_3和500 mg/L GA_3+15%H_2O_2处理也能有效促进萌发(P<0.05),萌发率分别为84%、82%,前者发芽势最好,明显高于其他处理。
