打破结缕草(Zoysia japonica)种子休眠的研究

Study on Breaking Seed Dormancy of Zoysia japonica

用水浸泡24h,然后用不同浓度的NaOH和H2O2,分不同时间处理结缕草种子,筛选能有效打破结缕草种子休眠的方法。结果表明:不同处理均能显著的提高结缕草种子不同时期的发芽势和最终发芽率,其中效果组显著的是先用水浸泡24h后的结缕草种子经30%NaOH处理30m in能显著的提高结缕草种子第7d、第14d的发芽势和最终的发芽势,其发芽率从6%提高到了73.33%,提高了12倍。因此,这种方法能显著打破结缕草的休眠,提高发芽率。

In order to select the effective methods to break seed dormancy of Zoysia japonica, the seeds were treated by different concentrations of NaOH and H2O2 for various time periods after soaking in water for 24 hours, The results showed that seeds germination of Zoysia japonica all can be promoted by different treatments, and dipping the seeds in 30% NaOH for 30rain could increase obviously germination tendency on the 7th , 14th day and the final rate of germination,which increased 12 times from 6% to 73.33%. Therefore, this method can break effectively seed dormancy of Zoysia japonica and improve their germination rate.