[Observation on the annual and seasonal changes of anatomic characteristics of the main root of Panax ginseng C.A. Meyer].
Annual dynamic of the main root of Panax ginseng shows that the cross-section of various tissues increases gradually with age, but the ratio of phloemxylem in cross-section decreases. Seasonal dynamic shows that cells of phellogen and cambium divide actively in June-July and gets retarded in August. Ecological conditions can influence annual and seasonal dynamics of the structure of the main root.
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Department of Biology, Harbin Normal University.
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D004463:Ecology; D005894:Panax / Q000033:anatomy & histology*; D010946:Plants, Medicinal; D012621:Seasons; D013997:Time Factors