2024年6月25日 星期二
快速打破结缕草种子休眠方法的比较
Studies on the method of rapidly breaking dormancy of Zoysia japonica seeds
2005年 第14卷 第2期 页码[32-34]    下载全文[0.4MB]  
摘要

用水和30%NaOH对结缕草(Zoysia japonica Steud.)种子进行浸种处理,筛选能快速打破结缕草种子休眠的方法。结果表明:用水浸种6d,8d内发芽率仅为14.70%;用30%NaOH浸种120min,8d内发芽率也仅达28.00%;而用水浸泡2d后再用30%NaOH处理40min,8d内结缕草种子的发芽率达到了82.00%。说明用水和30%NaOH综合处理的方法可以快速有效打破结缕草种子休眠,缩短发芽周期,达到快速出苗的目的。

Abstract

In order to select the rapid methods for breaking dormancy of Zoysia japonica Steud. seeds, the seeds were treated by soaking in water and 30% NaOH solution. The results showed that at the end of germination period(8d), the germination rate of seeds by soaking in water for 6 d or a 30% NaOH solution for 120 minare 14.70% and 28.00% respectively, but the germination rate of seeds by the composite method(soaking in 30% NaOH solution for 40min after soaking in water for 2d)reaches to82. 00%. Therefore, the composite method can effectively break dormancy and obviously shorten germination period of Z. japonica seeds.

关键词结缕草; 种子; 打破休眠; 发芽率;
Key wordsZoysia japonica Steud.; seeds; breaking dormancy; germination rate
作者宗俊勤,刘建秀
所在单位江苏省中国科学院植物研究所(南京中山植物园),江苏南京210014
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基金项目江苏省科学技术厅基础设施项目“特色园艺植物资源搜集、评价与利用”资助;