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KMID : 1098420150230040284
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Korean Journal of Medicinal Crop Science
2015 Volume.23 No. 4 p.284 ~ p.291
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Effects of Enhanced Light Transmission Rate During the Early Growth Stage on Plant Growth, Photosynthetic Ability and Disease Incidence of Above Ground in Panax ginseng
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Mo Hwang-Sung
Jang In-Bae
Yu Jin
Park Hong-Woo
Park Kee-Choon
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Abstract
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This study was performed to investigate the effects of enhanced light transmission on plant growth, photosynthetic ability, and disease tolerance to leaf blight, anthracnose in ginseng (Panax ginseng C. A. Meyer, Araliacease family) during the early growth stage (April to June). The photosynthetic ratio, stomatal conductance, and stem diameter of plants grown under a shade net with 15% light transmission rate showed an increasing trend compared to the control plants (5% light transmission rate) although the growth of the aerial parts were not influenced significantly. Plant height, stem length, and leaf length of treated plants were not significantly different from those of the control plants. Root parameters, such as root length, diameter, and weight of treated plants increased significantly compared to the control. Yield performance (187.4 ㎏ ? 10 a?1) of treated plants was 55.5% higher than that of the control (150.4 ㎏ ? 10 a?1). Additionally, disease severity
scores of treated plants were lower than those of the control plants, revealing higher survival rates. To retain high yield
potential and enhance the level of disease tolerance in ginseng, we suggest the increase of light transmission rate during the early growth stage.
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KEYWORD
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Light Transmission, Leaf Blight, Anthracnose, Ginseng
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