海水胁迫对马齿苋种子萌发及生理指标的影响  

Effects of Seawater Stress on Seed Germination and Physiological Indexes in Portulaca oleracea

作　　者：周楠[1] 张边江[1] 唐宁[1] 

机构地区：[1]南京晓庄学院食品科学学院,南京211171

出　　处：《湖北农业科学》2016年第5期1186-1189,共4页Hubei Agricultural Sciences

基　　金：南京市环境科学与工程重点学科资助项目;江苏省教育厅自然基金面上项目(14KJB210005)

摘　　要：以野生马齿苋(Portulaca oleracea L.)为试验材料,研究海水胁迫对马齿苋种子萌发及生理指标的影响。结果表明,在5%的海水胁迫下,与对照相比,马齿苋种子的发芽率、发芽势与发芽指数略有升高。随着海水体积分数的增加,马齿苋叶片叶绿素含量不断下降,可溶性糖、可溶性蛋白质和脯氨酸含量均呈上升趋势。可见,在海水胁迫下,马齿苋能保持较高的抗氧化特性,从而减轻海水胁迫对其生长的伤害。Taking the wild Portulaca oleracea L. as test materials, the effects of seawater stress on seed germination and physiological indexes were studied. The results showed that, compared with the contrast, the germination rate, germination force and germination index increased under the treatment of 5% seawater. With the increase of the seawater volume ftaction, the content of proline, soluble sugar and soluble protein increased. It was concluded that, P. oleracea L. could maintain the high inoxidizability to reduce the harm from seawater stress of low concentration.

关 键 词：马齿苋(Portulaca OLERACEA L.) 海水胁迫 种子萌发 生理特性 

分 类 号：Q949.745[生物学—植物学] Q945.78