Objectives

Current study illustrates the impact assessment of TiO₂ nano-particle seed priming on the overall germination, physiology in maize thriving under salinity stress.

Methodology

Seeds of maize cultivar were soaked in 40, 60 and 80 ppm aerated solution of TiO₂nano-particle for one day and nano-primed seeds were then exposed to salinity stress, i.e., 200 mM NaCl on paper culture system.

Results

Results indicated that 60 ppm TiO₂nano-priming treatment effect positively on the rate of germinate and growth of maize seedling under salinity stress. The experiment was carried out in sand as a growth medium with 60 ppm TiO₂ priming. Results exhibited that germination percentage, germination energy, seedling vigor index, lengths of root and shoot, fresh and dry weights of seedling, potassium ion (K+) concentration, relative water content (RWC), total phenolic and proline and contents, superoxide dismutase (SOD), catalase (CAT) and phenylalanine ammonia lyase (PAL) activities were significantly enhanced and mean emergence time (MET), sodium ion (Na+) concentration, membrane electrolyte leakage (MEL) and malondialdehyde (MDA) content were decreased by TiO₂ priming as compared to control under salinity stress.

Conclusion

So, nano-priming with TiO₂ mitigates the salinity injury in maize and could be a significant alternate strategy to mitigate the deleterious impact of salinity stress in maize.

中文翻译：

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用二氧化钛纳米颗粒进行种子启动可增强盐胁迫下玉米（Zea mays L.）的种子活力，叶片水分状况和抗氧化酶活性

目标

目前的研究表明了TiO ₂纳米粒子引发对盐分胁迫下玉米生长的整体发芽，生理的影响。

方法

将玉米品种的种子在40、60和80 ppm的TiO ₂纳米颗粒充气溶液中浸泡1天，然后将纳米底漆种子在纸培养体系上暴露于盐分胁迫下，即200 mM NaCl中。

结果

结果表明，盐分胁迫下60 ppm TiO ₂纳米底涂处理对玉米幼苗的发芽率和生长具有积极的作用。该实验是在作为60 ppm TiO ₂底漆的生长介质的沙中进行的。结果表明，发芽率，发芽能，幼苗活力指数，根和芽的长度，幼苗的鲜重和干重，钾离子（K +）浓度，相对水含量（RWC），总酚和脯氨酸及其含量，超氧化物歧化酶（ TiO ₂显着增强了SOD，过氧化氢酶（CAT）和苯丙氨酸氨裂合酶（PAL）的活性，平均出现时间（MET），钠离子（Na +）浓度，膜电解质泄漏（MEL）和丙二醛（MDA）含量降低了 与盐分胁迫下的对照相比，本底启动。

结论

因此，用TiO _2进行纳米底涂可以减轻玉米的盐分伤害，并且可能是减轻玉米盐分胁迫的有害影响的重要替代策略。