摘要： 以常规籼稻桂香占和华航31干种子为试验材料,通过人工气候室培养,研究了超声波和包衣及其互作对籼稻种子发芽特性和幼苗根系生长的影响。结果表明:经超声波1,5,10 min处理,籼稻桂香占和华航31干种子均显著提高其发芽率和发芽指数,其中桂香占以超声波处理10 min效果最好,华航31以超声波处理5 min效果最好;包衣处理能够在种子处理后60,90 d时显著提高种子的发芽率和发芽指数;超声波和包衣处理在处理后90 d内都能提高种子的发芽率和发芽指数。超声波处理还可以促进水稻幼苗根系总根长的生长,增大了根系表面积和根系体积。

关键词: 超声波, 籼稻, 发芽, 根系

Abstract: Effects of ultrasound and coating on seed germination and root growth of Indica were studied by u- sing the ultrasonic (0,1,5,10 min) and seed coating (Non-coated, treat before and after coating on dry seeds ) treatment to Guixiangzhan and Huahang 31, in the simulation experiment in phytotron. The results were as follows: Ultrasonic treatment (1,5,10 min) of dry Indica seeds (Guixiangzhan and Huahang 31 ) significant improved the germination rate and the germination index. It could get the high germination rate at treating 10 min(Guixiangzhan) and 5 min (Huahuang 31) ultrasound. Seed coating treatment increased the germination rate and germination index in the 60 and 90 days after treatment, Ultrasonic treatment of coating seeds increased the germination rate and ger- mination index within 90 days after treatment; Ultrasonic treatment also promoted the growth of the total root length and increased root surface area and root volume, but it could restrain the root growth when the treated time excee- ding the maximum.

Key words: Ultrasound, Indica, Germination, Root

中图分类号: 

• S511.01