沿阶草种子萌发特性的研究

Study on Germination Characteristics of Ophiopogon japnicus Seeds

通过比较分析沿阶草种子在不同温度下的萌发率、发芽势、平均萌发时间和萌发指数,发现温度对种子的萌发有显著影响,其中20/30℃的变温更有利于萌发。种子经不同浓度的GA3或CaC l2处理后,其发芽势和萌发指数均有较大的提高,以50 mg/L的GA3或1%CaC l2处理效果最好,但对种子萌发率没有明显影响。

The effects of different temperatures on germination characteristics of Ophiopogon japnicus seeds were studied. The results showed that the temperature, especially fluctuating temperature （20/30℃ ）, had significant influence on seed germination. Moreover, the germination energies and germination indexes of seeds treated by GA3 and Ca^2＋ respectively, were obviously enhanced. The effects of 50 mg/L CA3 on seed germination were better than those of ck, 100 mg/L and 150 mg/L. Similarly, among ck, 0.01%, 0.1% and Ca^2 ＋ , 1% Ca^2 ＋ was the most effective. But the treatments of GA3 and Ca^2＋ had no obvious effect on seed germination percentages.