人工老化对莲子活力及抗氧化能力的影响

Effects of Artificial Ageing on Vigor and Resistance to Oxidation of Lotus Seeds

莲子在４０℃、１００％相对湿度下人工加速老化，去壳者在４ｄ后活力显著降低了４９％，６ｄ后发芽力降低了２５％；不去壳者在１５ｄ内没有变化．去壳者在老化过程中，ＳＯＤ活性降低，电解质渗漏率、ＭＤＡ含量及ＬＯＸ活性逐渐增高；胚芽中蛋白含量基本不变，子叶中则降低，但其中热稳定蛋白都显著增加．

Lotus seeds ( Nelumbo nucifern Gaertn) were rapidly aged at 40 ℃ and 100% relative humidity in a sealed desiccatorThe vigor of the seeds without pericarp was highly decreased by 49% after 4 d,and the germination was decreased by 25% after 6 dDuring artificial ageing,the SOD activity declined,the lipoxygenase(LOX) activity, MDA content and electrolyte leakage increased graduallyThe protein content remained constant in the plumules and decreased in the cotyledons,but the boilingstable proteins(BSP) increased highly