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当前位置: 首页 > 文章 > 水分胁迫对线辣椒光合特性的影响 北方园艺 2015 (7) 4-9
Position: Home > Articles > Effect of Water Stress on Photosynthetic Characters of Chili Pepper Northern Horticulture 2015 (7) 4-9

水分胁迫对线辣椒光合特性的影响

作  者：
王沛;郑群;李格;庞永慧
单  位：
石河子大学农学院;新疆绿洲生态省部共建重点实验室
关键词：
线辣椒;水分;光合;叶绿素荧光
摘  要：
以线辣椒"红安8号"为试验材料,设置3个水分梯度,分别为当地浇水量的100%(W1)、当地浇水量的80%(W2)、当地浇水量的60%(W3),采用膜下滴灌种植技术,随机区组设计,重复2年进行,研究了水分胁迫对线辣椒光合特性的影响,以揭示耐旱性与光合特性之间的关系,为新疆当地线辣椒滴灌栽培技术提供参考依据。结果表明:在W2处理下,净光合积累量、光饱和点、羧化效率(CE)、表观光合量子效率(Φ)、CO2饱和点、PSⅡ光化学量子效率(ΦPSⅡ)以及光化学猝灭系数(qP)都高于其它处理,并且光补偿点、CO2补偿点以及非光化学猝灭系数(NPQ)显著低于其它2个处理。此外,线辣椒的细胞间CO2浓度(Ci)、气孔导度(Gs)、蒸腾速率(E)和净光合速率(Pn)随着生育期和浇水量的不同也不断发生变化。试验表明,浇水量过多过少都会对线辣椒的光合过程造成不利影响,在线辣椒栽培过程中应该对浇水量进行适度控制。
译  名：
Effect of Water Stress on Photosynthetic Characters of Chili Pepper
作  者：
WANG Pei;ZHENG Qun;LI Ge;PANG Yong-hui;College of Agronomy,Shihezi University,Key Laboratory of Oasis Ecology Ministry;
关键词：
chili pepper;;water;;photosynthesis;;chlorophyll fluorescence
摘  要：
Taking chili pepper‘Hong'an 8'as material,the plants grew under plastic mulch and were irrigated by drip irrigation under three levels water gradient(local average irrigation-W1,80%of local average irrigation-W2,60%of local average irrigation-W3).The experiment was designed in a single factor random block and repeated for two years.The effect of water stress on photosynthetic characters of chili pepper(Capsicum annuum L.)were studied.The research's aims were to reveal the relationship between drought tolerance and photosynthetic traits,in order to provide the advantage of drip irrigation technology in local pepper cultivation in Xinjiang province.The results showed that when the plants under condition W2,net photosynthetic accumulation,light saturation point,carboxylation efficiency(CE),apparent photosynthetic quantum efficiency(Φ),CO2 saturation point,photochemical quantum efficiency(ΦPSⅡ)and photochemical quenching coefficient(qP)were higher;but light compensation point,CO2 compensation point and non-photochemical quenching coefficient(NPQ)were lower than two other conditions.In addition,as the continuance of the growth period and with different amount of watering,intercellular CO2concentration(Ci),stomata conductance(Gs),transpiration rate(E)and Pn changed.In conclusion,more or less irrigation was bad for photosynthesis and chlorophyll fluorescence,therefore,the irrigation throughout the whole growing period of chili pepper should be regulated.

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