人工老化对老芒麦种子活力和生理生化变化的影响
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“十二五”农村领域国家科技计划课题“淀粉类(小麦野生材料)种质遗传完整性新技术研究及监测”(2013BAD01B0105);农作物种质资源保护项目“牧草种质资源收集、编目、更新与利用”(NB2013-2130135-48);中央级公益性科研院所 基本科研业务费专项资金项目(中国农科院草原研究所1610332014020)


Physiological and seed vigor changes of Elymus sibiricus L. seeds during artificial aging
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    摘要:

    摘要:本研究以4份老芒麦种子为材料,利用100%RH高温高湿老化法(AA)对老芒麦种子进行不同梯度的老化处理,探讨老化后老芒麦种子活力和种子内部生理生化的变化。结论表明:随着老化程度的加深,4份老芒麦种子的各项活力指标均出现明显下降趋势;生理生化指标中,种子浸出液电导率出现先下降后缓慢上升的情况,可溶性糖含量也出现先减少后增加的情况,丙二醛含量则出现了整体一致的上升状态, POD活性出现无规则的变化,SOD活性发生先增加后减小的现象, CAT活性则出现整体下降的趋势。以上结论将对老芒麦种质资源的保护和遗传完整性的研究提供基础理论依据。

    Abstract:

    Abstract: in this study,we studied the effects of the aging condition of high temperature and humidity(40℃、100%HR) on four kinds of Elymus sibiricus L. seeds vigor and physiological and biochemical characteristics. The results were as follows: we found that vigor index of Elymus sibiricus L. seeds had a degressive tendency with prolonging of the aging to deal with Elymus sibiricus L. seeds. The conductivity and soluble suger content of Elymus sibiricus L. seeds had been increased after decreased in a short period of time as the aging gradient extension. The MDA increased with the longer aging. The study showed that ,with exacerbation of artificial aging, POD activity had been no rule changes, SOD activity had been increased and then reduced in the later stage, and CAT activity was weaken after aging. These conclusions will play a very important role to the future research of Elymus sibiricus L. germplasm and provide the basis theoretical.

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付艺峰,李鸿雁,黄帆,等.人工老化对老芒麦种子活力和生理生化变化的影响[J].植物遗传资源学报,2014,15(6):1360-1363.

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  • 收稿日期:2014-01-06
  • 最后修改日期:2014-05-23
  • 录用日期:2014-09-26
  • 在线发布日期: 2014-10-08
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