摘要： 为了探究纳米制剂对小麦种子萌发生长的内在机制，以小麦品种山农27号为试材，采用纳米级ZnSn（OH）₆制剂对小麦种子进行外部刺激，研究纳米级ZnSn（OH）₆制剂对种子的萌发发芽率及其刺激种子生根的影响。结果表明，2种不同结构的纳米级ZnSn（OH）₆制剂在5，10 mg/L浓度条件下促发芽率相对较高。核壳结构的ZnSn（OH）₆在10 mg/L时主根长促进率达到4.76%，侧根促进率达到14.43%，茎高促进率达到5.17%，实心结构ZnSn（OH）₆在10，50 mg/L条件下时，在主根长、侧根长和茎高上均起到了促进作用。这些结果表明，外源纳米级ZnSn（OH）₆制剂可以通过增强小麦种子的养分吸收能力来提高小麦种子的发芽率和生根率，这些数据对提高纳米材料在农业上的使用具有重要的意义。

关键词: 纳米材料, 植物, 发芽, 生根

Abstract: In order to explore the intrinsic mechanism of wheat seed germination and growth,nano-scale ZnSn(OH)₆ preparation were used to stimulate wheat seed with Shannong 27 as material. The effects of nano-scale ZnSn(OH)₆ preparation on seed germination rate and seed rooting were studied. The results showed that the germination rate of nano-sized ZnSn(OH)₆ preparations with two different structures were relatively high at the concentration of 5,10 mg/L. When the core-shell structure of ZnSn(OH)₆ was 10 mg/L,the promotion rate of main root length,lateral root length and stem height reached 4.76%,14.43% and 5.17%,respectively. When the solid structure of ZnSn(OH)₆ was 10,50 mg/L,it promoted the main root length,lateral root length and stem height. These results indicate that exogenous nano-scale ZnSn(OH)₆ preparations can improve the germination and rooting rate of wheat seeds by enhancing the nutrient absorption ability of wheat seeds. These data are of great significance for improving the use of nano-materials in agriculture.

Key words: Nano materials, Plants, Germination, Rooting

中图分类号: 

• 512.01