| 水分胁迫对叶子花光合特性的影响 |
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| 引用本文： | 李永红,杨悦.水分胁迫对叶子花光合特性的影响[J].北方园艺,2009(1). |
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| 作者姓名： | 李永红 杨悦 |
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| 作者单位： | 深圳职业技术学院应用化学与生物技术学院,广东深圳,518055;深圳职业技术学院应用化学与生物技术学院,广东深圳,518055 |
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| 基金项目： | 广东省深圳市科技攻关项目 |
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| 摘 要： | 以2 a生盆栽叶子花品种大红宝巾和水红宝巾为试材,比较自然干旱条件对2个叶子花品种光合特性的影响.结果表明:自然干旱处理下,2个品种的净光合速率(Pn)均下降,但干旱胁迫4 d后(土壤相对含水量35.8%),2个品种的净光合速率达到峰值,高于对照,且在干旱胁迫条件下,大红宝巾Pn-直显著高于水红宝巾;气孔导度(Gs)、胞间CO2浓度(Ci)和蒸腾速率(Tr)在干旱胁迫条件下表现为先上升后下降趋势,均在干旱第2天后达到峰值,随后下降;在干旱胁迫第4天,叶子花的水分利用效率为最高,表明适度的水分胁迫能提高叶子花的水分利用效率.
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| 关 键 词： | 叶子花 控水 光合特性 |
The Effect of Water Stresses to Photosynthesis of Bougainvillea glabra |
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| LI Yong-hong,YANG Yue.The Effect of Water Stresses to Photosynthesis of Bougainvillea glabra[J].Northern Horticulture,2009(1). |
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| Authors: | LI Yong-hong YANG Yue |
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| Institution: | School of Applied Chemistry and Biological Technology;Shenzhen Polytechnic;Shenzhen;Gangdong 518055;China |
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| Abstract: | With two-year-old potted Bougainvillea glabra 'Sanderiara' and 'Mrs Butt' as material,soil water stress was used to study the effect of photosynthesis of Bougainvillea glabra.The results indicated that the net photosynthetic rate(Pn) of Bougainvillea glabra were on descending trend under water stress.When control water 4 days(relative soil water content was 35.8%),two cultivars of Bougainvillea glabra reached peak value,and higher than CK,furthermore,Pn of 'Sanderiara' was significantly higher than 'Mrs But... |
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| Keywords: | Bougainvillea glabra Control water Photosynthetic characteristics |
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