期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
纳米硅喷施对玉米抗旱性和抗虫性的影响
- 河北师范大学 生命科学学院, 河北 石家庄 050024
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DOI：10.13763/j.cnki.jhebnu.nse.2017.04.014
The Effect of Spraying Nano Silicon on Drought and Insect Resistance of Maize
摘要/Abstract
对大田中干旱胁迫下的玉米进行叶面喷施纳米硅后，检测其株高、产量、抗虫性.结果表明，纳米硅的喷施能够在一定程度上提高玉米的抗旱性和抗虫性.对喷施过纳米硅的玉米叶片表皮的显微观察发现，纳米硅喷施后的玉米叶片表面覆盖了大量的细密的硅颗粒，这些硅颗粒增强了表皮角质层的保水性，降低了玉米叶的咀嚼口感，从而达到提高抗旱性和抑制虫害的效果.生理检测表明，喷施纳米硅后玉米叶片细胞的MDA含量较低，脯氨酸含量和清水喷施对照没有显著差异，说明纳米硅喷施对植株的保护使其受损较轻，但并未引起胞内抗旱信号通路的明显改变.通过对玉米平均穗粒数和平均穗产量的统计结果表明，喷施纳米硅使玉米的平均穗粒数提高30.36%，平均单穗产量提高44.18%.干旱胁迫下的玉米在喷施纳米硅后产量得到了明显提高.
After spraying nano silicon on the maize under drought stress,the height,yield and insect resistance of the plants were monitored.The results showed that spraying nano silicon could improve the drought and insect resistance of maize.After nano silicon spray,the maize leaves were observed under microscope.It was found that the leaf surface was covered by a large number of silicon particles.These silicon particles enhanced the water holding capacity of stratum corneum,and reduced the chewing feel of corn leaves,hence improving the drought resistance and the pest suppression of maize.Physiological analysis showed that,after nano silicon spray,the MDA content of maize leaf cells was lower and the proline content did not show significant difference when compared to the maize leaves sprayed with water,indicating that the spray of nano silicon only cause slight damage to plants and did not cause significant changes in the intracellular signaling pathway of drought resistance.The average grain number and ear grain yield were measured.The results showed that spraying nanometer silicon could increase the average grain number by 30.36% and increase the average ear grain yield by 44.18%,demonstrating that,when maize was under drought stress,spraying nanometer silicon could significantly improve the corn production.
关键词
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