[1]王晓冰,刘建军,张士济.太白山4种药用植物光合生理特性研究[J].西北林学院学报,2013,28(04):6-10.[doi:10.3969/j.issn.1001-7461.2013.04.02]
 WANG Xiao-bing,LIU Jian-jun,ZHANG Shi-ji.Photosynthetic Physiological Characteristics of Four Medicinal Plants in the Taibai Mountain[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(04):6-10.[doi:10.3969/j.issn.1001-7461.2013.04.02]
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太白山4种药用植物光合生理特性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第28卷
期数:
2013年04期
页码:
6-10
栏目:
出版日期:
2013-07-30

文章信息/Info

Title:
Photosynthetic Physiological Characteristics of Four Medicinal Plants in the Taibai Mountain
文章编号:
1001-7461(2013)04-0006-05
作者:
王晓冰刘建军张士济
(1.西北农林科技大学 创新实验学院,陕西 杨陵 712100;2.西北农林科技大学 林学院,陕西 杨陵 712100;3.户县中心苗圃,陕西 户县 710300)
Author(s):
WANG Xiao-bingLIU Jian-junZHANG Shi-ji
(1.Innovation Experimental College,Northwest A&F University,Yangling,Shaanxi 712100,China; 2.College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China;3.Huxian Center Nursery, Huxian,Shaanxi 710300,China)
关键词:
 药用植物' target="_blank" rel="external"> FONT-FAMILY: 宋体">药用植物光合特性耐阴性
Keywords:
medicinal plant photosynthetic characteristic shade tolerance
分类号:
S718.43
DOI:
10.3969/j.issn.1001-7461.2013.04.02
文献标志码:
A
摘要:
 以太白山北坡人工栽培的药用植物商陆(Phytolacca acinosa)、大黄(Rheum officinale)、铁筷子(Helleborus thibetanus)和大百合(Cardiocrinum giganteum)为试验对象,测定了其净光合速率(Pn)日变化和光合色素含量,并估算光补偿点、光饱和点和最大净光合速率,探究这4种药用植物的光合生理特性。结果表明:大黄属喜光植物,对强光的利用能力强,在强光下光合能力高;商陆既能高效利用强光,又有一定耐阴性。商陆和大黄的光合作用日变化为“双峰”型,有光合“午休”现象,造成光合“午休”的原因是气孔限制和相关酶活性降低。铁筷子和大百合为喜阴植物,光合色素含量高,叶绿素a/b值低,对弱光利用能力强,但不耐强光。在林外强光下铁筷子和大百合的净光合速率受抑制,造成铁筷子8:00之后净光合速率降低是因为光抑制和气孔限制,大百合净光合速率降低则是因为高温强光胁迫。
Abstract:
In order to provide basic data for cultivation,photosynthetic physiological characteristics of four medicinal plants ( Phytolacca acinosa,Rheum of ficinale,Helleborus thibetanus and Cardiocrinum giganteum ) cultivated in the northern slope of Taibai Mountain were studied.The results showed that R.of ficinale was a heliophilous plant,which could effectively use high light,and had a higher net photosynthetic rate.  P.acinosa demonstrated higher capability to use high light,however,it also exhibited shade tolerance.The diurnal changes of photosynthesis of P.acinosa and R.of ficinale showed a typical double-peak curve with a slight midday depression of photosynthesis due to the stomatal limitation and the decrease of relevant enzymatic activity. H.thibetanus and C.giganteum were sciophilous plants with high photosynthetic pigment content,low ratio of Chl a/b,they could utilize weak light effectively.Their photosynthesese were suppressed when they were fully exposed under the sunshine outside of the forest.The reasons for the decrease of net photosynthesis for H.thibetanus after 8 am were due to photoinhibition and stomatal limitation,for C.giganteum however,it was because of the high temperature and strong light stress.

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备注/Memo

备注/Memo:
收稿日期:2012-11-25 修回日期:2013-01-24
基金项目:国家林业公益性行业科研专项(200904004)。
作者简介:王晓冰,男,本硕博连读生,研究方向:森林生态。E-mail:308492258@qq.com
*通信作者:刘建军,男,教授,博士生导师,研究方向:生态学。E-mail:Ljj@nwsuaf.edu.cn
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