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Position: Home > Articles > Effect of Water Stress on Photosynthetic Characteristics of Fortunella margarita Northern Horticulture 2015 (6) 26-29

水分胁迫对金桔光合特性的影响

作  者:
钟娟;钟俊荣
单  位:
贵州师范学院化学与生命科学学院;成都长田园林绿化有限公司
关键词:
水分胁迫;净光合速率;叶绿素含量;气孔导度;金桔
摘  要:
以3年生金桔嫁接苗为试材,通过采取控制土壤含水量设置不同水分梯度对金桔进行处理,探讨水分胁迫对金桔光合特性的影响。结果表明:在不同程度的水分胁迫下,金桔光合特性出现不同变化;轻度水分胁迫对金桔叶片叶绿素含量、含水量无显著影响,但显著降低了其比叶重;而重度水分胁迫则显著降低了其叶片叶绿素含量、含水量以及比叶重;轻度水分胁迫显著降低了金桔净光合速率、气孔导度,对金桔胞间CO2浓度和蒸腾速率未造成显著影响;而重度水分胁迫则对上述指标中除胞间CO2浓度外,均有显著抑制效应。试验表明,轻度水分胁迫是金桔栽培中土壤水分控制的临界值,应在实践中予以重视。
译  名:
Effect of Water Stress on Photosynthetic Characteristics of Fortunella margarita
作  者:
ZHONG Juan;ZHONG Jun-rong;Chemical and Life Science College,Guizhou Teachers College;Chengdu Changtian Landscaping Company;
关键词:
water stress;;net photosynthetic rate;;content of chlorophyll;;stomatal conductance;;Fortunella margarita(Lour.)Swingle
摘  要:
In order to study water stress on photosynthetic characteristics of kumquat,three-year-old of kumquat grafted seedlings were taken as test materials by controlling soil moisture in different percentage.The results showed that,photosynthetic characteristics of kumquat had different results with the different soil water stress.There were no significant influence on chlorophyll content and leaf water content in the treatment of mild water stress,but significantly decreased the specific leaf weight.However,severe water stress significantly reduced chlorophyll content,leaf water content and specific leaf weight.Mild water stress significantly decreased net photosynthetic rate and stomatal conductance,but no significant influence was found in intercellular CO2 concentration and transpiration rate.Furthermore,severe water stress had significant influence on the index above except intercellular CO2 concentration.Research showed that mild water stress was the critical value of soil moisture,which should be paid much attention in practice.

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