| 两种穗型冬小麦品种旗叶光合特性和水分利用对光强的响应 |
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| 引用本文： | 杨文平,郭天财,刘胜波,朱云集,王晨阳,王永华.两种穗型冬小麦品种旗叶光合特性和水分利用对光强的响应[J].华北农学报,2008,23(2):9-11. |
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| 作者姓名： | 杨文平 郭天财 刘胜波 朱云集 王晨阳 王永华 |
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| 作者单位： | 1. 河南农业大学,国家小麦工程技术研究中心,河南,郑州,450002;河南科技学院,河南,新乡,453003
2. 河南农业大学,国家小麦工程技术研究中心,河南,郑州,450002 |
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| 基金项目： | 国家科技支撑计划重大项目
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河南省科技攻关项目 |
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| 摘 要： | 以超高产小麦兰考矮早八和豫麦49为材料,研究了开花期旗叶光合与水分利用对光强的响应。结果表明:开花期,随着光强的增加,旗叶光合速率(Pn)、气孔导度(Cond)、蒸腾速率(Tr)和水分利用率(WUE)均表现不同程度增大,超过一定的光强后反而下降;但胞间CO2浓度(Ci)随光强的增加而降低。与豫麦49相比,兰考矮早八在较高光强下旗叶仍表现出较高的光合特性与水分利用。
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| 关 键 词： | 冬小麦 光合特性 水分利用 光强 |
| 文章编号： | 1000-7091(2008)02-0009-03 |
Light Intensity on Flag Leaf Photosynthetic Characteristics and Water Use of Two Spike-type Cultivars of Winter Wheat |
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| YANG Wen-ping,GUO Tian-cai,LIU Sheng-bo,ZHU Yun-ji,WANG Chen-yang,WANG Yong-hua.Light Intensity on Flag Leaf Photosynthetic Characteristics and Water Use of Two Spike-type Cultivars of Winter Wheat[J].Acta Agriculturae Boreali-Sinica,2008,23(2):9-11. |
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| Authors: | YANG Wen-ping GUO Tian-cai LIU Sheng-bo ZHU Yun-ji WANG Chen-yang WANG Yong-hua |
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| Abstract: | Flag leaf photosynthetic characteristics and water use were investigated in different light intensity in two spike-type wheat(Triticum aestivum L.)varieties,Lankaoaizao 8 and Yumai 49.The results showed that,at anthesis,with increasing light intensity,there were increases in photosynthetic rate,stomatal conductance,transpiration rate and water use efficiency.They would decrease if light intensity was increased to a limited light intensity.But intercellular CO2 concentration decreased with increasing light intensity.Compared with Yumai 49,flag leaf of Lankaoaizao 8 had higher photosynthetic characteristics and water use in higher light intensity. |
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| Keywords: | Winter wheat Photosynthetic characteristics Water use Light intensity |
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