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《ACTA HORTICULTURAE SINICA》 1999-05
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Effect of Low Light Intensity on Photosynthetic Characteristics of Different Sweet Pepper Cultivars

Sui Xiaolei 1,Jiang Jianzhen 1,Wang Zhiyuan 1,and Zhu Yujie 2 ( 1Department of Horticulture,China Agricultural University,Beijing 100094; 2Beijing Vegetable Research Center,Beijing 100089)  
In this study,four cultivars of sweet pepper( Capsicum frutescens L.var. grossum Bailey)were cultivated under three levels of light intensity which were 100%,70% and 35% of the natural light intensity respectively.The results showed that the fruit yield,net photosynthetic rate were the highest and the night respiratory rate was the lowest under 70% light intensity.As the light intensity decreased,the light compensation point declined;the chlorophyll contents and LHCP relative contents increased;the F 686 /F 740 ratio of low temperature fluorescence emission in leaves firstly declined then ascended.Under low light intensity,there were lower light compensation point and night respiratory rate,less increasing contents of chlorophyll and LHCP in the low light tolerance cultivar,while the F 686 /F 740 ratio was changed obviously.
【CateGory Index】: S641.301
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