自然干旱胁迫下盆栽勋章菊萎蔫系数测定  

Determination of Wilting Coefficient of Gazania regins L. Under Natural Drought Stress

作　　者：周晓慧[1] 王韡[1] 戴斌[1] 吴阳清[1] 陆小平[1] 

机构地区：[1]苏州大学金螳螂建筑与城市环境学院,江苏苏州215123

出　　处：《北方园艺》2013年第9期67-69,共3页Northern Horticulture

基　　金：苏州市应用基础研究计划(农业)资助项目(SYN201221)

摘　　要：以从国外引进的勋章菊品种"日出"和"星白"为试材,研究了自然干旱胁迫下2个勋章菊品种的蒸腾速率日变化、耗水量、存活天数及萎蔫系数。结果表明:在温度为32～35℃、紫外线照射强度为8级的条件下,胁迫第4天"日出"已死亡,而"星白"在干旱胁迫第5天出现死亡。二者的萎蔫系数分别为17.80%和14.80%。表明"星白"勋章菊有较强的抗旱性,为勋章菊在夏季景观应用中降低成本养护、节约水资源提供了参考。Taking the varieties of Gazanian regins L. ‘Richu＇ and‘Xingbai＇ that introduced from foreign as experiment materials,the transpiration rates, water consumption, survival days under natural drought stress and wilting coefficient were determined. The results showed that under the conditions of a temperature of 32--35℃, and 8 ultraviolet irradiation intensity,‘Richu＇ died at the fourth day of drought stress, while ‘Xingbai＇ died at the fifth day of natural drought treatment. The wilting coefficients of the two varieties were 17. 80% and 14. 80% respectively. It indicated that ‘Xingbai＇ had a better resistance than‘Richu＇, which provided a reference to reduce maintenance cost and water consumption of Gazanian regins L. used in summer landscaping.

关 键 词：蒸腾速率 勋章菊 萎蔫系数 

分 类 号：S681.9[农业科学—观赏园艺]