SHEN Wei,CEN Xiang-tao,YAN Tao,et al.Effect of Oligo-chitosan on Photosynthetic Characteristics of Lonicera hypoglauca Miq.[J].Northern Horticulture,2014,38(20):75-79.
壳低聚糖对红腺忍冬一些光合性状的影响
- Title:
- Effect of Oligo-chitosan on Photosynthetic Characteristics of Lonicera hypoglauca Miq.
- 文章编号:
- 1001-0009（2014）20-0075-05
- Keywords:
- oligo-chitosan; Lonicera hypoglauca Miq.; photosynthetic gas exchange parameters; chlorophyll fluorescence
- 分类号:
- S 687.3
- 文献标志码:
- A
- 摘要:
- 以5年生红腺忍冬为试材，分别采用600、800、1 000、1 200 mg/L壳低聚糖叶面喷施红腺忍冬，喷施后5～30 d连续5次测定叶片光合气体交换参数和叶绿素荧光参数，研究了外施不同浓度壳低聚糖对红腺忍冬叶片一些光合性状的影响。结果表明：600 mg/L处理对叶片的光合气体交换和荧光特性影响不大，800、1 000、1 200 mg/L处理对叶片的光合和荧光特性产生显著影响，叶片净光合速率（Pn）、气孔导度（Gs）、胞间CO2浓度（Ci）、蒸腾速率（Tr）、PSⅡ最大光化学效率(Fv/Fm)、光化学淬灭系数（qP）先下降后上升，而非光化学淬灭系数（qN）先上升后下降，1 000 mg/L处理比800 mg/L和1 200 mg/L处理效果稳定，说明应用一定浓度的壳低聚糖能改善红腺忍冬叶片的光合性状，有利于提高红腺忍冬产量和品质。
- Abstract:
- Taking five-year-old Lonicera hypoglauca Miq. as test materials,the leaves of Lonicera hypoglauca Miq. were treated by the different concentrations of oligo-chitosan (600 mg/L,800 mg/L,1 000 mg/L,1 200 mg/L),then the leaves photosynthetic parameters and the chlorophyll fluorescence parameters were measured in 5-30 days,the effect of oligo-chitosan on the photosynthetic characteristics of the leaves and the quality of leaves,flowers,stems in normal conditions were studied.The results showed that 600 mg/L treatment had little effect on photosynthesis and chlorophyll fluorescence characteristics of leaves.800 mg/L,1 000 mg/L and 1 200 mg/L treatments had significant effect on photosynthesis and chlorophyll fluorescence characteristics of leaves,the net photosynthetic rate (Pn),stomatal conductance(Gs),intercellular CO2 concentration(Ci),transpiration rate(Tr),maximum photochemical efficiency of PSⅡ(Fv/Fm),photochemical quenching coefficient(qP) first decreased then increased,non-photochemical quenching coefficient(qN) first increased then decreased.1 000 mg/L treatments was more stable than 800 mg/L and 1 200 mg/L treatments.A certain concentration of oligo-chitosan could improve the photosynthetic characteristics of the leaves and enhance the medicinal ingredients of Lonicera hypoglauca Miq.
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备注/Memo
第一作者简介：沈伟（1987-），男，硕士研究生，研究方向为代谢植物学。E-mail：yinziguo@126.com. 责任作者：叶燕萍（1955-），女，博士，教授，硕士生导师，现主要从事植物化学调控等研究工作。E-mail：yanchen@gxu.edu.cn.
收稿日期：2014-05-27