摘要
为了解短期高温高湿处理对沼泽小叶桦的光合和生理特征的影响及其恢复效应,采用盆栽实验,利用人工智能气候室,研究了沼泽小叶桦在3个不同的温度湿度处理时的光合作用等生理特征的变化,及其经过10天高温高湿处理后在对照条件下的恢复效应。结果显示,高温高湿（30~40℃,90%）会抑制沼泽小叶桦叶片的光合等生理作用以及其生长。但经过短时间高温高湿处理后,沼泽小叶桦的蛋白质,可溶性糖以及光合等生理指标均能即时恢复;叶绿素、脯氨酸等指标恢复较缓。说明沼泽小叶桦对短时间高温高湿处理具有一定的耐受性,能够通过自身生理调节来适应外界温度湿度等环境变化,可以在上海及周边滨海城镇绿化造林进行引种、应用。
A pot experiment was conducted to study the impacts of 3 different temperature and air relative humidity conditions of the growth chambers on photosynthetic and physiological characteristic of Betula microphylla,aimed to make sure the recovery effect of photosynthetic and physiological characteristics of leaves after a short-term high temperature and high air relative humidity.The results showed that high temperature and air relative humidity affected on photosynthetic and physiological characteristics of leaves and the growth of B.microphylla.Proline and chlorophyll contents of leaves were lower than control,whereas the soluble sugar and protein contents of leaves could return to normal in recovery phase.These findings indicated that B.microphylla had ability to adapt stress（a short-term high temperature and air relative humidity） and could adapt to changes of temperature and air relative humidity factors through its own physical regulations.It was concluded that B.microphylla could be widely cultivated in and around the coastal towns of Shanghai region.
出处
《中国农学通报》
CSCD
北大核心
2011年第28期47-52,共6页
Chinese Agricultural Science Bulletin
基金
国家科技支撑项目"滨海城镇盐碱化绿地植被修复技术研究"(2008BAJ10B0403)
国家林业局公益性行业科研专项"城市湿地生态系统健康评价与恢复技术研究与示范"(201104088)
关键词
沼泽小叶桦
高温高湿
光合特征
净光合速率
生理特征
Betula microphylla
high temperature and air humidity
photosynthetic characteristics
net photosynthesis rate
physiological characteristics
