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Characteristics of Photosynthesis, Leaf and Fruit by Crown Layer in Rubus coreanus Miq.  

Han, Jingyu (Division of Special Purpose Trees, Department of Forest Genetic Resources, Korea Forest Research Institute)
Kim, Sea Hyun (Division of Special Purpose Trees, Department of Forest Genetic Resources, Korea Forest Research Institute)
Chung, Hun Gwan (Division of Special Purpose Trees, Department of Forest Genetic Resources, Korea Forest Research Institute)
Jang, Yong Seok (Division of Special Purpose Trees, Department of Forest Genetic Resources, Korea Forest Research Institute)
Cho, Yoon Jin (Division of Special Purpose Trees, Department of Forest Genetic Resources, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.95, no.3, 2006 , pp. 328-333 More about this Journal
Abstract
This study was conducted to find the characteristics of photosynthesis, leaf and fruit by crown layers in Rubus coreanus Miq. Light compensation points were shown PPFD 33, 20 and $5{\mu}mol\;m^{-2}\;S^{-1}$ at upper, middle and lower layer, respectively. Light saturation points were appeared PPFD 1000, 500 and 200 and their net photosynthesis rate were 8.52, 5.25 and $3.60{\mu}mol\;CO_2\;m^{-2}S^{-1}$ at upper, middle and lower layer, respectively. Uiryeong 7 which was viny type showed higher net photosynthetic rate than others at upper layer. Songgye 6 which was upright type showed lower net photosynthetic rate than others at lower layer. Chlorophyll contents of middle layer had the highest value in the all layers and upper layer showed the lowest value. Most characteristics of leaf morphology were showed that middle and lower layer had higher value than upper layer. That trend was contrary to characteristics of photosynthesis by crown layers. However, dry weight per leaf area and most characteristics of fruit had the highest value at upper layer and that was similar to characteristics of photosynthesis by crown layers. Also, sugar contents of fruit showed the highest value at middle layer.
Keywords
Rubus coreanus Miq.; photosynthetic characteristics; crown layer; leaf and fruit characteristics;
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