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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (19): 142-146.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

不同浓度的硝酸盐对淹水条件下甜樱桃叶绿素荧光的影响

王闯 李中勇 刘敏 豆惠敏 毛志泉   

  • 收稿日期:2009-04-09 修回日期:2009-06-06 出版日期:2009-10-05 发布日期:2009-10-05

Effects of different concentration of NO3- on the ChlorophyⅡ Fluorescence sweet cherry under waterlogging

  • Received:2009-04-09 Revised:2009-06-06 Online:2009-10-05 Published:2009-10-05

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摘要：

以美早/Colt为试材，研究了NO3-对淹水条件下甜樱桃叶绿素荧光的影响。结果显示：（1）甜樱桃各处理的光系统II(PSII)原初光能转化效率（Fv/Fm）、光系统活性（Fv/Fo）和光化学猝灭系数(qP)在淹水过程中出现降低-增加-降低的趋势；NO3-处理在淹水第2天开始能减缓Fv/Fm、Fv/Fo和qP下降趋势；（2）NO3-处理的非光化学猝灭系数（qN）在淹水期间都高于对照。表明淹水过程中NO3-一方面提高了光能转换效率和PS II的潜在活性，另一方面增强了过剩光能的非光化学耗散，有利于保护光合机构免受环境胁迫的破坏。

关键词: 玉米, 玉米, 核心技术, 规范化栽培

Abstract:

Effect of NO3- on the ChlorophyⅡ Fluorescence of the meizhao/colt under waterlogging were studied .The results show that with the increase of waterlogging, (Fv/Fm )、 Fv/Fo and (qP) had the trend of decrease –increase-decrease. Exogenously applied NO3- alleviated the decrease of Fv/Fm 、 Fv/Fo and qP. qN on The treatment of NO3- were higher than CK. The light energy conversion efficiency, and potential activity of photosynthetic reaction center and the non-photochemical dissipation of excess light enemy, which resisted the damage on photosynthetic apparatus of environmental stress, were improved.