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Dynamic changes in the polysaccharide levels in P. kingianum rhizome buds during cold treatment. (I) PAS staining of a P. kingianum rhizome bud section. The stained sections in A-H represent rhizome buds chilled for 0 d, 15 d, 30 d, 45 d, 60 d, 75 d, 90 d and 105 d, respectively. (II) Statistical analysis results for the staining density for PAS sections. (III) Dynamic change in the starch content
