不同高粱抗旱品种光合速率及水分利用效率的研究  

A Study on photosynthesis rate and water use efficiency of Chinese sorghum cultivars with different drought-resistant specialities.

作　　者：王玉国[1] 贺润喜[1] 苗果园[1] 

机构地区：[1]山西农业大学农学系,太谷030801

出　　处：《生态农业研究》1998年第1期20-22,共3页Chinese Journal of Eco-agriculture

基　　金：国家自然科学基金

摘　　要：研究了不同高粱抗旱品种在水分胁迫条件下光合速率及水分利用效率的日变化。结果表明,抗旱品种(3197B)比不抗旱品种(三尺三)叶片水势高,蒸腾速率低,气孔阻力大,光合速率和水分利用效率高,为抗旱品种选育与旱作栽培提供了科学依据。Two Chinese sorghum cultivars with different drought-resistant specialities are tested to study the diurnal changes of photosynthesis rate and water use efficiency. The re-sults show that the leave water potential,stomatal resistance,photosynthesis rate and water use efficiency are higher in 3197B cultivar. And the transpiration rate in 3197B cultivar is lower than that in San-Chi-San cultivar. This provides the background information for crop breeding and cultivation in arid area.

关 键 词：高粱 光合速率 水分利用效率 蒸腾速率 气孔阻力 

分 类 号：S514.01[农业科学—作物学]