曼陀罗种子破眠方法研究

Study on Dormancy Breaking Technique of Datural stramonium L. Seed

曼陀罗种子存在显著的休眠性,本试验对打破曼陀罗种子休眠的方法进行了研究。结果表明:用10%NaOH处理90min为破除曼陀罗种皮障碍的最佳方法,种子的发芽势达40%,比对照提高36%,发芽率达82.5%,比对照提高74.5%。用10%NaOH处理90min后再用300mg/L的GA3溶液浸泡24h,为打破曼陀罗种子休眠的最佳方法,种子的发芽势达74.5%,比对照提高70.5%,发芽率达91%,比对照提高83%。

There is significant dormancy in Datural stramonium L. seeds. This study investigated the seed dormancy breaking technique of Datural stramonium L. The results showed that： The best method to break the seed coat barrier was alkali scarication with 10% NaOH for 90 minutes. Germination potential and germination rate of the seed reached to 40% and 82.5% respectively. Germination potential and germination rate of CK only reached to 4% and 8% respectively. Treating with 10% NaOH for 90 minutes first and then soaking in 300mg/L GA3 for 24 hours could improve the seed germination potential and germination rate significantly. Germination potential was increased by 70.5% and germination rate was increased by 83%.