腊肠树种子休眠与解除的方法研究

摘要

[Objective] To study the methods of seed dormancy and dissolution of Cassia fistula L..[Method] The seeds of sausages were treated by hot water soaking,mechanical seed coating,potassium nitrate and gibberellin solution concentration respectively,so as to explore the way to relieve dormancy of Cassia fistula L.seeds.[Result] The results showed that the treatments of 95 ℃ hot water and removing seed capsule had significant effects on increasing seed germination.The treatments of KNO3 and GA3 were non significant for dormancy breaking.The germination inhibitor in seeds of Cassia fistula were determined through bioassay method.The bioassay indicated that methanol extracts from seed coat and the colloid outside seed had significant inhibition effects on cabbage seed germination.[Conclusion] The study can provide reference for further study the mechanism of Cassia fistula L.seed dormancy.%[目的]探讨腊肠树种子休眠与解除的方法.[方法]通过热水浸泡、机械脱种皮、设置不同KNO3和GA3溶液浓度,分别对腊肠树种子进行处理,探讨解除腊肠树种子休眠的方法.对种子周围的胶质以及包围种胚的种皮分别进行研磨、浸提,测定其提取液对白菜种子发芽率的影响.[结果]95℃热水和机械脱种皮处理的腊肠树种子的发芽最好,能有效解除种子休眠.而KNO3和GA3浸种对种子萌发和休眠解除没有明显效果.腊肠树果实中存在抑制种子萌发和使种胚处于休眠状态的抑制物.[结论]该研究可为进一步探讨腊肠树种子休眠机制提供参考.