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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (6): 208-211.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

两种黄瓜砧木（南瓜）幼苗对NaCl胁迫的渗透调节响应

周俊国1,扈惠灵1,曾凯2,张猛1   

  • 收稿日期:2009-11-06 修回日期:2009-11-24 出版日期:2010-03-20 发布日期:2010-03-20
  • 基金资助:

    河南省重点科技攻关计划资助项目;河南科技学院2008年高层次人才科研项目

Response of osmotic adjustment of two cucumber rootstock seedling ( Cucurbita spp. ) to NaCl stress

  • Received:2009-11-06 Revised:2009-11-24 Online:2010-03-20 Published:2010-03-20

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摘要：

摘要: 以两种黄瓜砧木中国南瓜(Cucurbita moschata)杂交种“360-3×112-2”和黑籽南瓜（C. ficifolia）的幼苗为试材，在营养液培养的条件下进行80mmol?L-1 NaC1胁迫，研究了南瓜幼苗的生长、相对含水量、各器官的渗透势和叶片中渗透调节物质含量的变化。结果表明，NaCl胁迫后，两种南瓜幼苗的生长显著受到抑制，“360-3×112-2”幼苗的耐盐性比黑籽南瓜强，“360-3×112-2”幼苗的相对含水量降低较少，各器官的渗透势降低较多，叶片中渗透调节物质含量增加较多。较高的耐盐性与它具较强的渗透调节能力有关。

关键词: 六倍体小黑麦, 六倍体小黑麦, 抗旱性, RAPD分子标记, 遗传多样性

Abstract:

Abstract: The growth, relative water content, osmotic potential of all organ, contents of osmoregulation substance including proline and soluble sugar in leaves of two cucumber rootstocks, such as Cucurbita moschata hybrid ‘360-3 × 112-2’ and C. ficifolia seedlings were studied in hydroponic adding 80mmol?L-1 NaC1. The results showed that the growth of two tested materials seedling were inhibited significantly after 7 days under NaCl stress, salt tolerance of ‘360-3×112-2’ hybrid seedlings was higher than C. ficifolia, and decrease of relative water content was less, decrease of osmotic potential of all organ was more, increase of osmoregulation substance contents in leaves was more than that of C. ficifolia seedling.Those results can be concluded that the higher salt tolerance of ‘360-3×112-2’ hybrid under NaCl stress than C. ficifolia was closely related to its stronger osmotic adjustment ability.