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periderm n.【植物;植物學】周皮。-al, -ic adj.

peridium

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。

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 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。