[1]余茂蕾,笪文怡,张倚铭,等.葎草光合生理特性的研究[J].西华师范大学学报(自然科学版),2017,38(01):40-47.[doi:10.16246/j.issn.1673-5072.2017.01.007]
 YU Maolei,DA Wenyi,ZHANG Yiming,et al.On the Characteristics of Humulus Scandens Merr’s Photosynthetic[J].Journal of China West Normal University(Natural Sciences),2017,38(01):40-47.[doi:10.16246/j.issn.1673-5072.2017.01.007]
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葎草光合生理特性的研究()
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《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
38
期数:
2017年01期
页码:
40-47
栏目:
出版日期:
2017-03-20

文章信息/Info

Title:
On the Characteristics of Humulus Scandens Merr’s Photosynthetic
作者:
余茂蕾笪文怡张倚铭唐娅
(西华师范大学 环境科学与工程学院,四川 南充637009)
Author(s):
YU MaoleiDA WenyiZHANG YimingTANG Ya
(College of Environmental Science and Engineering,China West Normal University,Nanchong Sichuan 637009,China)
关键词:
葎草光响应曲线CO2响应曲线模型
Keywords:
humulus scandenslight response curveCO2 response curvemodel
分类号:
Q945.79
DOI:
10.16246/j.issn.1673-5072.2017.01.007
文献标志码:
B
摘要:
利用便携式光合仪Li6400测定了葎草(Humulus scandens (Lour.) Merr)的光合生理特性,并用五种模型对其光合作用进行拟合,同时探讨光合参数对净光合速率(Pn)的影响,为合理利用其药用资源并为栽培提供基础理论依据。结果表明:光响应曲线拟合最佳模型为指数改进模型,其饱和光强为1 400.975 μmol·m-2·s-1,光补偿点为41.009 μmol·m-2·s-1,最大净光合速率为18.795 μmol·m-2·s-1,暗呼吸速率为-2.193 μmol·m-2·s-1,表观量子效率为0.057;CO2响应参数拟合效果最佳模型为指数改进模型,其饱和CO2浓度为1 173.585 μmol·mol-1,CO2补偿点为82.763 μmol·mol-1;Pn与胞间二氧化碳浓度为极显著性负相关,与蒸腾速率、气孔导度、湿度、光强均呈极显著性正相关关系。葎草属于C3植物,叶片转化光合效率高,适应环境能力强,易栽培。
Abstract:
This paper aims at providing a fundamental theory for H.scandens cultivation and the rational use of its natural resources.The photosynthetic and physiological characteristics of Humulus scandens are tested with a portable photosynthetic system of Li6400 and its photosynthesis is fitted by five models.In addition, the influence of photosynthesis parameters on net photosynthetic rate (Pn) is explored at the same time.The results show that the modified exponential model was the optimal model for light response curves with its light saturation point (LSP) reaching1400.975μmol·m-2·s-1,light compensation point(LCP) reaching 41.009μmol·m-2·s-1,maximum net photosynthetic rate(Pmax) reaching 18.795μmol·m-2·s-1,Rd reaching -2.193μmol·m-2·s-1 and the AQY reaching 0.057.The modified exponential model also works best for CO2 response parameters fitting with CO2 saturation point (Csp) of 1 173.585μmol·mol-1 and CO2 compensation point (Г) of 82.763μmol·mol-1.It is revealed that Pn is obviously negatively related to intercellular CO2 concentration but positively related to transpiration rate,stomatal conductance,humidity and light intensity.All these characteristics prove that H.scandens belonging to C3 plant has a high efficiency of photosynthesis in its leaves and a strong survival adaptability to cultivate.

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备注/Memo

备注/Memo:

收稿日期:2016-10-03基金项目:四川省科技厅应用基础项目(2015JY0140);四川省教育厅项目(12ZA289)
作者简介:余茂蕾(1994—),女,四川凉山人,硕士研究生,主要从事环境生态研究。
通信作者:唐娅(1981—),女,重庆武隆人,讲师,主要从事环境监测与污染治理研究。E-mail: 9073422@qq.com
引用本文:余茂蕾,笪文怡,张倚铭,等.葎草光合生理特性的研究[J].西华师范大学学报(自然科学版),2017,38(1):40-47.[YU Maolei,DA Wenyi,ZHANG Yiming,et al.On the characteristics of Humulus scandens Merr’s photosynthetic[J].Journal of China West Normal University(Natural Sciences),2017,38(1):40-47.]葎草光合生理特性的研究
更新日期/Last Update: 2017-03-20