不同增温处理对巫山淫羊藿抗性生理的影响

Effect of Simulated Warming on Physiology Resistance of Epimedium wushanense

为探究淫羊藿栽培技术,促进其生长发育,满足市场需求,以巫山淫羊藿为研究对象,通过开顶式气室(OTC,open-top chambers)对移栽的巫山淫羊藿进行不同程度的温度处理,探讨增温对巫山淫羊藿抗性生理特性的影响,揭示其对温度的响应情况。结果表明:在增温条件下,巫山淫羊藿不同器官表现出不同的抗性能力。随着温度升高,所有器官中的MDA和H2O2含量基本上表现为降低趋势。增温对根、茎中POD活性影响不显著;但对叶和花的影响显著。增温对SOD活性影响显著,但对CAT活性影响不显著。增温对VE和VC影响显著。增温同样能显著影响羟自由基和总抗氧化能力及蛋白质含量。+2℃增温的条件下有利于巫山淫羊藿的生长,而超过这个限度会对植物起到抑制的作用。

In order to study the cultivation techniques of Epirnedium wushanense, promote the growth and satisfy the market demand, taking Epirnedium wushanense as materials,an open top chamber （OTC） warming system was established to study the impact of simulated warming on physiology resistance of Epimedium wushanense. The results showed that different organs of Epimedium wushanense showed different resistant ability in warming condition. The content of MDA and HzOz in all organs were significantly decreased with the rise in temperature. The effect of warming on the POD activity of root and stem was not significant except the leaf and flower. The effect of warming on the SOD activity, the content of VC and VE, hydroxy free radical ability and T-AOC was significant in all organs, but on the CAT was not significant. In conclusion the condition of ＋2 ℃ warmingis conducived to the growth of Epimedium zvushanense.