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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (19): 199-204.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

盐处理下两种砧木对甜樱桃‘萨米脱’光合影响的比较

孟艳玲 魏海蓉 刘庆忠 宗晓娟 王甲威   

  • 收稿日期:2011-02-17 修回日期:2011-03-16 出版日期:2011-08-05 发布日期:2011-08-05
  • 基金资助:

    863计划;公益性行业（农业）科研专项经费项目

Comparison on the Effects of Rootstocks on Photosynthesis and Chlorophyll Fluorescence Parameters of Sweet Cherry ‘Summit’ under Salt Stress

  • Received:2011-02-17 Revised:2011-03-16 Online:2011-08-05 Published:2011-08-05

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摘要：

在不同浓度NaCl处理下，测定了以‘吉塞拉5号’（G5）、B5为砧木的甜樱桃‘萨米脱’光合和叶绿素荧光参数。结果表明：盐胁迫下，两种砧木嫁接的‘萨米脱’叶片的Pn、Gs、Fv/Fo、ΦPSII和ETR值随着处理浓度的增加或处理时间的延长显著下降，适度盐胁迫对‘萨米脱’叶片的光合抑制主要是气孔限制（3‰和6‰ NaCl），高盐胁迫主要为非气孔限制（9‰ NaCl）。两种砧木对所嫁接的‘萨米脱’光合影响效应因盐胁迫程度而异，适度盐胁迫下，以G5为砧木的Pn、Gs、Fv/Fo、ΦPSII和ETR值较以B5为砧木的下降时间晚且降幅小，但在高盐胁迫下则反之。

关键词: 秋水仙素, 秋水仙素, 多倍体, 桉树, 渗透剂

Abstract:

To study the effect of rootstocks G5 and B5 on photosynthetic properties of sweet cherry ‘summit’ under salt stress, the photosynthesis and chlorophyll fluorescence parameters of ‘summit’ combined with G5 and B5 were measured under different NaCl treatments. The results showed that, the value of Pn, Gs, Fv/Fo, ΦPSII and ETR declined obviously paralleled with NaCl concentration or treatment time in leaves of ‘summit’ combined with G5 (S-G5) and ‘summit’ combined with B5 (S-B5), photosynthesis of ‘summit’ was inhibited by salinity most cause for stomatal limitation under moderate salinity (3‰ and 6‰ NaCl), while most cause for nonstomatal limitation under high salinity (9‰ NaCl).The discrepancy on photosynthesis between S-G5 and S-B5 depended on the salinity degree, Pn, Gs, Fv/Fo, ΦPSII and ETR in S-G5 declined later and lower than that in S-B5 under moderate salinity, while declined faster and higher under high salinity treatment.