periderm 中文意思是什麼
periderm
解釋
n. 名詞 【植物；植物學】周皮。-al, -ic adj. 形容詞
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In damaged stems and roots, and in those undergoing secondary growth, it is replaced by a secondary layer, the periderm
已損傷的莖和根，以及進行次生生長的根莖中，表皮被次生層即周皮代替。 -
The results showed that the root transactions had significant differences in periderm, phloem, and xylem between cultivated and wild salvia miltiorrhiza
結果表明，在解剖橫切面上，栽培與野生丹參根的周皮、韌皮部、木質部具有顯著差異。 -
In cultivated salvia miltiorrhiza roots, light - colored periderm contained less layers of cells and low ratio of phloem to xylem, compared with those in wild salvia rniltiorrhiza roots
栽培丹參根的周皮細胞層數少、色淡，韌皮部與木質部比值小，而野生丹參根的周皮細胞層數多、顏色重，韌皮部與木質部比值大。 -
Thickness of upper and lower epidermis of leaves, width of xylem and phloem of annual and biennial branches, ratio of late wood to early wood, periderm thickness of biennial branches, and length of xylem ray present decreasing trends with latitude ascending ; while ratio of palisade tissue to spongy tissue, epidermis thickness of annual branches, and cortex thickness of biennial branches show unobvious variations with latitude increasing
葉的上下表皮厚度、 1和2年生枝木質部及韌皮部寬度、晚材早材比值、 2年生枝的周皮厚度、木射線長等均隨緯度升高而呈下降趨勢；而葉的柵欄組織和海綿組織比值、 1年生枝表皮厚度、 2年生皮層厚度等解剖結構隨緯度變化沒有明顯規律。
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