Study on the Causes of Dormancy and the Method of Breaking Dormancy in the Seeds of Oxytropis myriophylla
In this study,the seeds of Oxytropis myriophylla were used as the material,and the rea-sons for the dormancy of seeds of Oxytropis myriophylla were analyzed by observing the morpholog-ical characteristics of seeds,the seed vitality,seed water absorption,seed breaking hardness and seed germination were studied.Seeds were treated differently and the ways to lift seed hibernation were ex-plored.The viability of the seeds used in the experiment reached 77.80％,but the germination rate of intact seeds without treating the seed coat was extremely low.Treatment with sandpaper could break the hardness of seeds,and the hardness rate reduced to 7％;The germination rate was 86％.After the sandpaper broke the hardness of the seeds,the promotion effect on seed germination was most ob-vious when the IBA concentration was 50 mg/L,the germination rate was as high as 97％,and the average germination days were shorter than those of the control.Comprehensive comparison,the ger-mination effect of Oxytropis myriophylla seeds was best after the seed coat was treated with sandpa-per and then treated with IBA solution of 50 mg/L.
万方数据
维普
