摘要
以国外引进的勋章菊品种"星白"和"红纹"及其杂交后代"XH"为试材,利用电子天平称重法比较了自然环境条件下勋章菊3个品种扦插苗及其蔓枝蒸腾速率日变化,分析了勋章菊不同品种营养器官、光照强度、温度及湿度等环境因素对植株蒸腾速率的影响,以期为勋章菊夏季景观应用养护管理中降低养护成本、节约水资源提供参考。结果表明:勋章菊3个品种扦插苗及其蔓枝之间蒸腾速率差异显著,其中"XH"扦插苗平均蒸腾量最大,为300.45g·m-2·h-1,而其蔓枝平均蒸腾量最小,仅为38.76g·m-2·h-1;植株蒸腾速率总体上与光照强度、温度呈正相关,与湿度呈负相关,与营养器官之间存在一定关系,但不同品种之间表现有所差异。
Taking the varieties of Gazania regins L. ＇Xingbai＇, ＇Hongwen＇ and their hybridization ＇XH＇ as experimental materials, using electronic balance, transpiration rates of the three varieties cutting seedlings and their branches were determined. Meanwhile, environmental factors, such as light intensity, temperature and atmospheric relative humidity were recorded,and the relation of environmental factors, vegetative organs and transpiration rate in different materials were analyzed. The results showed that there existed significant difference between transpiration rate and different materials, and the biggest average transpiration rate was 300. 45 g·m^-2·h^-1 of ＇XH＇ cutting seedlings,while the smallest value was 38. 76 g·m^-2·h^-1 of ＇XH＇ branches. Generally speaking,plant transpiration rate,light intensity and temperature were positive correlated, negatively correlated with humidity. And there was a certain relationship between vegetative organs and transpiration rate, but they were not the same in different varieties. By comparing the transpiration rate in different varieties of Gazania regins L. cutting seedlings, some reference to reduce maintenance cost and water consumption in summer landscaping were provided.
出处
《北方园艺》
CAS
北大核心
2014年第1期62-65,共4页
Northern Horticulture
基金
苏州市应用基础研究计划(农业)资助项目(SYN201221)
关键词
蒸腾速率
勋章菊
叶面积测定
transpiration rate
Gazania regins L.
leaf area measurement
