| 干旱胁迫对山杏光合特性的影响 |
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| 引用本文： | 魏磊,崔世茂. 干旱胁迫对山杏光合特性的影响[J]. 华北农学报, 2008, 23(5) |
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| 作者姓名： | 魏磊 崔世茂 |
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| 作者单位： | 内蒙古农业大学,农学院,内蒙古,呼和浩特,010019;内蒙古农业大学,农学院,内蒙古,呼和浩特,010019 |
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| 摘 要： | 为筛选干旱地区生态建设的优良品种,以盆栽山杏为试材,控水模拟不同土壤水分状况,探讨了不同程度干旱胁迫对山杏叶片光合特性的影响.结果表明,山杏叶片净光合速率、蒸腾速率、气孔导度随着干旱胁迫程度的加强而降低.随着温度的升高,叶片净光合速率和水分利用效率降低、蒸腾速率升高,加重了干旱对其光合作用的影响.对照、轻度和中度干旱胁迫下的净光合速率、气孔导度及水分利用效率日变化曲线呈双峰型,重度胁迫下净光合速率和气孔导度日变化为单峰型.说明在一定的干旱条件下,山杏光合作用对干旱胁迫具有一定的适应能力.
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| 关 键 词： | 干旱胁迫 光合特性 山杏 |
The Effect of Soil Drought Stress on Photosynthetic Character of Prunus armeniaca |
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| WEI Lei,CUI Shi-mao. The Effect of Soil Drought Stress on Photosynthetic Character of Prunus armeniaca[J]. Acta Agriculturae Boreali-Sinica, 2008, 23(5) |
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| Authors: | WEI Lei CUI Shi-mao |
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| Affiliation: | WEI Lei,CUI Shi-mao(College of Agronomy,Inner Mongolia Agricultural University,Huhhot 010019,China) |
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| Abstract: | In this research,The response of photosynthetic character of prunus armeniaca to soil drought stress were studied.The results show that net photosynthetic rate(Pn),transpiration rate(Tr)and stomatal conductance(Cs)decreased with the increases in drought stress.Compared with control(CK),decreases of intercellular CO2 concentration(Ci)under mild and moderate stress and increase under severe stress were fonnd.The test of respone of photosynthesis to temperature exhibited the decline of Pn and increase of Tr un... |
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| Keywords: | Drought stress Photosynthetic character Prunus armeniaca |
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