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2008•Acta Agriculturae Boreali-SinicaRequires access

Effects of Low Temperature Stress on Photosynthetic Characteristics in Leaves of Eggplant Seedlings

Dingshi Zha

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Abstract

Effects of low temperature stress on photosynthetic characteristics in leaves of eggplant(Solanum melongena L.)seedlings of 702 were studied.The results showed that chlorophyll contents,chlorophyll a/b,net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),light saturation point(LSP),photosynthetic rate at light saturation point,apparent quantum yield(AQY),CO2 saturation point(CSP),carboxylation efficiency(CE)and maximum RuBP regeneration rate were decreased;Light compensation point(LCP),CO2 compensation point(CCP)were increased,and intercellular CO2 concentration(Ci)were decreased in the former period,and then increased.The results suggested photochemical structure of eggplant seedlings was damaged under low temperature stress.

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What this paper is about

Effects of low temperature stress on photosynthetic characteristics in leaves of eggplant(Solanum melongena L.)seedlings of 702 were studied.The results showed that chlorophyll contents,chlorophyll a/b,net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),light saturation point(LSP),photosynthetic rate at light saturation point,apparent quantum yield(AQY),CO2 saturation point(CSP),carboxylation efficiency(CE)and maximum RuBP regeneration rate were decreased;Light compensation point(LCP),CO2 compensation point(CCP)were increased,and intercellular CO2 concentration(Ci)were decreased in the former period,and then increased.The results suggested photochemical structure of eggplant seedlings was damaged under low temperature stress.

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Available abstract

Effects of low temperature stress on photosynthetic characteristics in leaves of eggplant(Solanum melongena L.)seedlings of 702 were studied.The results showed that chlorophyll contents,chlorophyll a/b,net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),light saturation point(LSP),photosynthetic rate at light saturation point,apparent quantum yield(AQY),CO2 saturation point(CSP),carboxylation efficiency(CE)and maximum RuBP regeneration rate were decreased;Light compensation point(LCP),CO2 compensation point(CCP)were increased,and intercellular CO2 concentration(Ci)were decreased in the former period,and then increased.The results suggested photochemical structure of eggplant seedlings was damaged under low temperature stress.

Key concepts: Compensation point, Photosynthesis, Transpiration, Stomatal conductance, Carboxylation, Horticulture, Solanum, Chlorophyll

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