[1]文建雷,刘志龙,王姝清.水分胁迫条件下元宝枫的光合特征及水分利用效率[J].西北林学院学报,2003,18(02):1-3.
 Photosynthetic Characters and Water Utilization Efficiency in Acer truncatum Under Water Stress[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2003,18(02):1-3.
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水分胁迫条件下元宝枫的光合特征及水分利用效率 ()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第18卷
期数:
2003年02期
页码:
1-3
栏目:
森林生物学
出版日期:
2003-04-29

文章信息/Info

Title:
Photosynthetic Characters and Water Utilization Efficiency in Acer truncatum Under Water Stress
作者:
文建雷; 刘志龙; 王姝清
西北农林科技大学,生命科学学院,陕西,杨陵,712100; 西北农林科技大学,教学实验农场,陕西,杨陵,712100
关键词:
元宝枫 光合速率 蒸腾速率 水分利用效率
分类号:
S718.43
文献标志码:
A
摘要:
以1年生元宝枫幼苗为材料,采用盆栽控水法,研究了水分胁迫条件下元宝枫光合特征及其水分利用效率的变化.结果表明,随胁迫程度的加重和时间延长,光合速率(Pn)和水分利用效率(WUE)依次降低.在轻度和中度胁迫下,Pn的降低既有气孔因素又有非气孔因素的限制,严重胁迫条件下,Pn的降低主要是非气孔因素引起的.轻度水分胁迫下,元宝枫Pn的日变化为单峰曲线,中度胁迫下呈双峰曲线;WUE日变化在轻度和中度胁迫下均呈双峰曲线,这既与元宝枫自身生理特性有关,同时也受控于气温、光强、相对湿度及蒸腾速率的日变化.

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备注/Memo

备注/Memo:
国家科技攻关项目(99-42)
更新日期/Last Update: 2010-04-29