Hydrogen-rich water (HRW), normally produced by water electrolysis, is a major method for hydrogen gas (H₂) delivery, and had beneficial outcomes in postharvest preservation of cut roses. Since the preparation of HRW is complicated and required a H₂ generator, the development of a convenient hydrogen supply in horticulture is required. In this report, magnesium hydride (MgH₂), a H₂-releasing material used in hydrogen industry and medical research, was tested. Compared to HRW produced by electrolysis, release of H₂ by MgH₂ hydrolysis was more convenient and flexible. Similar to conventional HRW, MgH₂ could contribute H₂ and prolong the vase life of cut roses. This beneficial role of MgH₂ was verified by the observed increase in water content, decreased lipid peroxidation, and increased antioxidant levels. Pharmacologic experiments showed that MgH₂ mimicked the cut flower response of nitric oxide (NO)-releasing compound by triggering an increase in endogenous NO production. In contrast, the positive effects of MgH₂ on cut flower vase life and lipid peroxidation were impaired by a NO scavenger and its synthetic inhibitor. This indicated a requirement for NO in the MgH₂-mediated pathway for prolonged vase life of cut rose flowers. Therefore, this study identifies a new opportunity for the application of H₂-releasing materials as an alternative approach for more convenient and flexible hydrogen supply in horticulture.

通常通过水电解产生的富氢水（HRW）是输送氢气（H ₂）的主要方法，并且在切玫瑰的收获后保存中具有有益的效果。由于HRW的制备很复杂并且需要H ₂发生器，因此需要开发园艺中便利的氢供应。在此报告中，对氢化镁（MgH ₂）（一种用于氢工业和医学研究的H ₂释放材料）进行了测试。与通过电解产生的HRW相比，通过MgH ₂水解释放H ₂更为方便和灵活。与常规HRW相似，MgH ₂可以贡献H ₂并延长切玫瑰的花瓶寿命。MgH _2的这种有益作用已通过观察到的水含量增加，脂质过氧化作用降低和抗氧化剂含量增加得到证实。药理实验表明，MgH ₂通过触发内源性NO生成的增加来模仿一氧化氮（NO）释放化合物的切花响应。相反，NO清除剂及其合成抑制剂削弱了MgH ₂对切​​花花瓶寿命和脂质过氧化的积极作用。这表明在MgH ₂介导的途径中需要NO才能延长玫瑰切花的花瓶寿命。因此，本研究确定了应用H ₂的新机会。释放材料作为园艺中氢气更方便，更灵活供应的替代方法。