干旱胁迫下四种冷季型草坪草的生理反应  

Physiological Responses of Four Cold-Season Turfgrass Cultivars Under Drought Stress

作　　者：李艳秋[1] 尹伟伦[1] 夏新莉[1] 

机构地区：[1]北京林业大学生物科学与技术学院,北京100083

出　　处：《草地学报》2007年第2期164-167,共4页Acta Agrestia Sinica

基　　金：国家"十一五"科技支撑计划课题(2006BAD03A01)

摘　　要：试验以草地早熟禾(Poa pratensis L.)2个品种‘男爵(Baron)’、‘公园(Park)’和高羊茅(Festuca Arundinacea)2个品种‘盆景2000(Bonsai2000)’、‘爱瑞3(Arid)’为材料,在干旱处理下,测定草坪草的自由水含量、束缚水含量、叶片含水量、质膜透性、净光合速率、蒸腾速率及细胞间隙CO2浓度。结果表明:各生理指标存在不同的下降幅度和上升差异,四种材料抗旱性从强到弱依次为‘男爵’、‘公园’、‘盆景2000’和‘爱瑞3’。The study was designed for four turfgrass cultivars： Baron, Bonsai 2000, Park, and Arid Ⅲ. Under drought stress, the experiment was conducted to determine the grasses＇ content of free water, of bound water, and of relative water （RWC）, relative electrical conductivity, net photosynthesis （Pn）, transpiration rate （Tr）, and intercellular CO2 concentration （Ci）. The result indicates that different physiological indices show different extent of increases and decreases and the order of drought resistance of the four turfgrass cultivars from high to low is Baron, Bonsai2000, Park, and Arid Ⅲ.

关 键 词：冷季型 草坪草 干旱胁迫 生理反应 

分 类 号：S688.4[农业科学—观赏园艺] S812[农业科学—园艺学]