ZHAO Xue,ZHANG Xiuzhen,MU Hongxiang,et al.Effect of Drought Stress on Anatomical Structure and Photosynthesis of Xanthoceras sorbifolia Leaves in Seedling[J].Northern Horticulture,2017,41(13):38-44.[doi:10.11937/bfyy.20164561]
文冠果幼苗叶片解剖结构和光合作用对干旱胁迫的响应
- Title:
- Effect of Drought Stress on Anatomical Structure and Photosynthesis of Xanthoceras sorbifolia Leaves in Seedling
- 文献标志码:
- A
- 摘要:
- 以辽宁省朝阳市和河北省石家庄市文冠果种源地培育出的一年生幼苗为研究对象，设置适宜水分、中度干旱和重度干旱3个土壤水分梯度，通过盆栽称重控水方法控制土壤含水量，采用LI-6400光合仪进行光合指标的测定，并依据石蜡切片技术，研究干旱胁迫下不同种源文冠果光合特性及叶片解剖结构特征。结果表明：干旱胁迫下2个种源文冠果光合参数整体呈下降趋势；随着干旱胁迫的加剧，叶绿素含量呈下降趋势；随干旱程度的加剧，2个种源文冠果通过减小叶片厚度、增加栅栏组织厚度及减小海绵组织厚度等途径来提高其抗旱能力。
- Abstract:
- Originate from Chaoyang city,Liaoning Province and Shijiazhuang,Hebei Province Xanthoceras sorbifolia,produced annual seedlings were used as the research object,growth and physiological characteristics of X.sorbifolia seedlings under soil drought stress with three different soil content levels,the suitable moisture,moderate soil drought stress and severe soil drought stress were studied.Using LI-6400 photosynthetic apparatus for the determination of photosynthetic indexes,and on the basis of paraffin sectioning.Drought stress under different provenance of X.sorbifolia,characteristics and leaf anatomical structure characteristics were researched.The results showed that,Under the drought stress,the photosynthetic parameters in vary degrees both in the leaves of X.sorbifolia were on the decline;with drought stress increasing,the chlorophyll content was on the decline;with the intensification of the drought,the Xanthoceras sorbifolia improved the ability of drought resistance by reducing thickness of leaf and spongy tissue,increased the thickness of palisade tissue and other ways.
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备注/Memo
第一作者简介：赵雪（1990-），女，河北三河人，硕士研究生，研究方向为城市林业。E-mail:zhaoxue_rain@163.com.责任作者：牟洪香（1976-），女，山东平度人，博士，副教授，硕士生导师，现主要从事能源植物的开发与利用以及林木栽培生理等研究工作。E-mail:mouhongxiang@hebau.edu.cn.基金项目：林学学科创新基金资助项目（LXXK2014-1）。