快速打破水稻早熟恢复系种子休眠方法的探讨

Discussion on the Method of Quickly Breaking the Dormancy of the Seeds of Early Rice Restorer Line

采用双氧水、强氯精、赤霉素、硝酸钾等药剂浸种,以及高温干燥和低温冷藏等方法对春、夏、秋三季收获的早熟恢复系R6307和中早22的种子进行处理,以期研究出快速打破恢复系加代种子休眠状态的适宜方法。结果表明,强氯精浸种和高温干燥两种处理方法均能快速有效地打破不同收获时期水稻早熟恢复系种子的休眠,提高种子成苗率。

In order to study the optimum methods of breaking the seeds dormancy,the seeds of early maturity restorer line R6307 and conventional early indica rice variety Zhongzao 22 harvested in spring,summer and autumn were treated by soaking seeds with hydrogen peroxide,strong chlorine,gibberellin,potassium nitrate and other agents,as well as high temperature drying and low temperature refrigeration.The results showed that the two methods of strong chlorine and high temperature drying could effectively break the dormancy of the seeds of rice early maturing restorer line seeds at different harvesting stages,and improve the seedling rate of seeds.