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KMID : 1098419970050020154
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Korean Journal of Medicinal Crop Science
1997 Volume.5 No. 2 p.154 ~ p.161
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Inhibition Effects of Pulp on Seed Germination of American Ginseng
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Huang Yao-Ge
Li Xiang-Gao
Chi Shu-Yu
Yang Ji-Xiang
Liu Ren-Song
Kim Hack-Seang
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Abstract
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The germination inhibitory effects of American ginseng (Panax quinquefolium Linne) pulp were discussed. The germination inhibitory effects of pulp juice were decreased in a concentration dependent manner. When the pulp juice was diluted 0 (original juice), 1, 2, 5, 10, 20, 50 and 100 times, the radicle lengths of the assay plant, Chinese cabbage (Brassica chinensis Linne), showed 0, 0.32, 0.72, 3.13, 4.83, 16.07, 16.73 and 23.50 mm, respectively (CK=25.98 mm). The pulp evidently inhibited the embryo growth in natural fruit. The longer was the duration that the pulp stayed around the seed, the longer was the time course needed for embryo getting free from the inhibitory effects of pulp. When the depulping was performed on the day 0, 15, 30 and 60 after harvest, the time courses needed for embryo extricating the residual inhibitory effects from pulp were 30, 75, 135 and 135 days, respectively. Moreover, if the pulp stayed around the seed with time, that would make the seed rotten ratio increase. When the pulp stayed around the seed for 0, 15, 30, 60 and 270 days, the seed rotten ratios were 5.47, 5.71, 19.05, 27.14 and 33.33%, respectively. Therefore, we concluded that the pulp could be included in the inhibitory components which made American ginseng seed get into dormancy.
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KEYWORD
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American ginseng (Panax quinquefolium Linne), Seed, Dormancy, Inhibition, Pulp, Chinese cabbage (Brassica chinensis Linne)
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