首页 | 官方网站   微博 | 高级检索  
     

干旱和CO2浓度升高对干旱区春小麦气孔密度及分布的影响
引用本文:杨惠敏,王根轩.干旱和CO2浓度升高对干旱区春小麦气孔密度及分布的影响[J].植物生态学报,2001,25(3):312-316.
作者姓名:杨惠敏  王根轩
作者单位:杨惠敏(兰州大学干旱农业生态国家重点实验室,兰州 730000);王根轩(兰州大学干旱农业生态国家重点实验室,兰州 730000)
基金项目:国家自然科学基金(39770447)和国家重点基础研究专项经费(G1999011705)
摘    要: 通过对不同土壤水分状况、不同CO2浓度条件下春小麦叶片气孔的观测结果表明:干旱和CO2浓度升高不仅影响叶片气孔密度,而且也影响其分布。随干旱程度的加剧,气孔密度有明显的上升趋势,气孔在叶片上的分布趋向均匀;随CO2浓度的升高,气孔密度有明显的下降趋势,其分布也趋向均匀。水分状况和CO2浓度相同时,气孔密度及分布受不同温度的影响。

关 键 词:春小麦  干旱  CO2浓度升高  气孔密度  
修稿时间:2000年8月15日

LEAF STOMATAL DENSITIES AND DISTRIBUTION IN TRITICUM AESTIVUM UNDER DROUGHT AND CO2 ENRICHMENT
YANG Hui-Min and WANG Gen-Xuan.LEAF STOMATAL DENSITIES AND DISTRIBUTION IN TRITICUM AESTIVUM UNDER DROUGHT AND CO2 ENRICHMENT[J].Acta Phytoecologica Sinica,2001,25(3):312-316.
Authors:YANG Hui-Min and WANG Gen-Xuan
Abstract:Wheat plants (Triticum aestivum L. ) was grown in pots at three water levels (80%, 60% and 40% field water capacity) and three CO2 concentrations (350, 550 and 700 parts per million by volume (μmol·mol-1)) in open-top chambers (OTC). Leaf stomata characteristics were observed and measured. Drought and CO2 enrichment both influenced not only the leaf stomatal densities but also their distribution. Drought increased the abaxial stomatal densities while high CO2 decreased these densities. The variations of the stomatal distributions were diminished under drought and high CO2 treatments. Different temperatures also influenced the stomatal densities and distributions under constant water levels and CO2 concentrations.
Keywords:Triticum aestivum L    Drought  CO2 enrichment  Stomatal densities  Stomatal distribution
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《植物生态学报》浏览原始摘要信息
点击此处可从《植物生态学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号