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http://dx.doi.org/10.14578/jkfs.2017.106.1.33

Growth and Physiological Response in Container of Daphniphyllum macropodum by Shading Level  

Song, Ki Seon (Forestry Knowledge Service Division, Korea Forestry Promotion Institute)
Kim, Jong Jin (Department of Forestry and Landscape Architecture, Konkuk University)
Publication Information
Journal of Korean Society of Forest Science / v.106, no.1, 2017 , pp. 33-39 More about this Journal
Abstract
This study was carried out in order to closely examine the growth and the physiological response by shading levels of a container seedling of Daphniphyllum macropodum which is known as the species of having shade tolerance in a warm temperature evergreen broad-leaved tree. The shading treatment was regulated with the shading level of full sunlight, and 35%, 55%, 75% of full sunlight. As a result of surveying the height and the root collar diameter growth by the shading level, the height was the highest with 13.2 cm under 35% of shading. The root collar diameter was the highest with 4.99 mm under full sunlight. The organ-based (leaves, shoot and root) dry mass production and the whole dry mass production were higher with 1.38 g, 0.47 g, 0.87 g, 2.72 g, respectively, in order of 35% shading. As for chlorophyll a, b, and the total chlorophyll content, the highest chlorophyll content was shown under 75% of shading with the relatively highest shading level. The ratio of chlorophyll a to chlorophyll b (a/b) was the highest under 35% of shading. The photosynthetic rate, stomatal conductance and water use efficiency were the highest with $12.3{\mu}molCO_2{\cdot}m^{-2}{\cdot}s^{-1}$, $0.27molH_2O{\cdot}m^{-2}{\cdot}s^{-1}$, $3.53{\mu}molCO_2{\cdot}mmol^{-1}H_2O$, respectively, under 35% of shading. As a result of surveying the whole experiment, D. macropodum grows nicely by maintaining 35% shading.
Keywords
chlorophyll contents; container seedling; dry mass production; H/D ratio; photosynthesis rate; T/R ratio;
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Times Cited By KSCI : 9  (Citation Analysis)
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