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中国农学通报 ›› 2016, Vol. 32 ›› Issue (28): 7-10.doi: 10.11924/j.issn.1000-6850.casb16020005

所属专题: 生物技术

• 林学 园艺 园林 • 上一篇    下一篇

不同龄沙地云杉光合荧光生理特征的比较

王 飞,刘世增,李得禄   

  1. (甘肃省治沙研究所,兰州 730070)
  • 收稿日期:2016-02-01 修回日期:2016-05-12 接受日期:2016-05-25 出版日期:2016-10-11 发布日期:2016-10-11
  • 通讯作者: 王飞
  • 基金资助:
    林业公益性行业科研专项“河西荒漠区沙地云杉引种繁育及造林技术研究”(201104036);中央财政林业科技推广示范资金项目“干旱沙区沙地云杉苗木繁育及造林技术推广”([2114]ZYTG12);甘肃省青年基金计划“民勤青土湖近地层0-50米盐碱沙尘运动规律研究”(145RJYA270)。

Photosynthetic and Fluorescence Physiological Characteristics of Different Aged Picea mongolica

Wang Fei, Liu Shizeng, Li Delu   

  1. (Gansu Desert Control Research Institute, Lanzhou 730070)
  • Received:2016-02-01 Revised:2016-05-12 Accepted:2016-05-25 Online:2016-10-11 Published:2016-10-11

摘要: 旨在比较分析不同龄沙地云杉的差异。以不同龄沙地云杉为实验材料,采用Li-6400便携式光合作用系统,测定不同龄云杉的光响应、叶绿素荧光参数。结果表明:(1)沙地云杉叶片净光合速率随着树龄的增加净光合速率(Pn)逐渐降低,其中5年生的沙地云杉的净光合速率最大。10年生的沙地云杉的光饱和点光饱和点(LSP)比5年、20年的高,这就说明10年沙地云杉光合最活跃,是生产光合产物最高的时期,处于生命最旺盛的时期。(2)不同龄沙地云杉的叶绿素荧光参数之间差异不显著,其中实际光化学反应量子效率(ΦPSⅡ)、表观光合电子传递速率(ETR)随着树龄的增加而降低,5年生的ΦPSⅡ、ETR达到最大。

关键词: 糯玉米, 糯玉米, 引种, 试验, 膜下滴灌, 新疆北疆

Abstract: The aim was to comparatively analyze the difference among different aged Picea mongolica. Different aged Picea mongolica were used as materials. Li-6400 portable photosynthesis system was used to detect the photoresponse and chlorophyll fluorescence parameters. The results showed that: (1) Pn reduced gradually with the increase of tree age, Pn of 5-year-old tree was the highest, LSP of 10-year-old tree was higher than that of 5- year-old and 20-year-old tree, which meant Pn of 10-year-old tree was the most active, it was the production period of maximum photosynthetic product, in the most exuberant life period; (2) chlorophyll fluorescence parameters of different aged Picea mongolica were not significantly different (P>0.05),ΦPS and ETR reduced with Picea crassifolia age increase,ΦPSⅡ and ETR of 5-year-old tree were the highest.