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农学学报

农学学报 ›› 2015, Vol. 5 ›› Issue (4): 64-67.doi: 10.11923/j.issn.2095-4050.2014-xb0670

所属专题： 资源与环境； 农业生态

• 林学 园艺 园林 食用菌 • 上一篇    下一篇

海水胁迫对两种生态型马齿苋种子萌发的影响

徐青,苗迎军,张边江,薛丹丹,唐宁   

  1. 南京晓庄学院,南京晓庄学院,南京晓庄学院,南京晓庄学院,南京晓庄学院
  • 收稿日期:2014-07-21 修回日期:2014-09-30 接受日期:2014-10-14 出版日期:2015-05-06 发布日期:2015-05-06
  • 通讯作者: 唐宁 E-mail:x2s9ie
  • 基金资助:
    江苏省生态学“十二五”重点建设学科；江苏省高等学校大学生创新创业训练计划“盐胁迫下马齿苋碳同化途径的响应及其光合生理表现”(201311460026Y)；南京晓庄学院大学生实践创新训练计划重点项目“海水胁迫对马齿苋种子萌发及其荧光生理特性的影响”(2014XSKY037)。

Effect of Seawater Stress on the Seed Germination of Two Ecotypes of Portulaca oleracea

  • Received:2014-07-21 Revised:2014-09-30 Accepted:2014-10-14 Online:2015-05-06 Published:2015-05-06

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摘要： 为研究药食两用植物马齿苋种子对盐碱地的耐受能力，利用不同浓度海水处理两种生态型马齿苋种子，分析海水胁迫对其种子萌发和根芽生长的影响。结果表明，10%浓度以下的海水对苋菜种子的发芽率、发芽势、发芽指数、根长和芽长与对照相比差异不明显，略有促进作用；10%以上的海水对两种生态型马齿苋种子的萌发具有明显的抑制作用，50%高浓度海水处理，两种生态型马齿苋几乎没有萌发。各浓度海水处理下，大花马齿苋各指标均比野生型马齿苋高，抗海水胁迫能力较强。

关键词: 蝴蝶兰, 蝴蝶兰, 杂交后代, 性状分离

Abstract: To study 2 ecotypes of Portulaca oleracea seeds’‘( Dahua’and weed) tolerance to saline and alkaline land, effect of different seawater concentrations on the germination of 2 ecotypes of P. oleracea seeds and their root and shoot length were studied. The results showed that: at the low seawater concentration (0-10%) the seed germination of 2 ecotypes of P. oleracea had no obvious difference. The concentration of above 10% significantly inhibited the seeds germination. When the concentration reached 50%, the seed germination of 2 ecotypes of P. oleracea was seriously inhibited. At per concentration of seawater, the germination rate, vigor index, germination index and root and shoot length of‘Dahua’P. oleracea were all higher than that of weed P. oleracea, indicating higher tolerance of seawater stress.