phloem是什么意思 phloem的用法 phloem怎么读

phloem

英 ['fləʊem]美 ['floɛm]

n. 筛部，[植] 韧皮部

中文词源

phloem 韧皮部（由筛管将叶制造的糖分输送到各部位的植物组织）

来自德语phloem,韧皮部，由德国19世纪植物学家Karl Wilhelm根据希腊语创造出来的一个词，来自希腊语phloos,树皮。

英语词源

phloem (n.)

1870, from German phloëm

(1858), coined by German botanist Karl Wilhelm von Nägeli (1817-1891) from Greek phloos, phloios "bark of trees," of uncertain origin, + passive suffix -ema.

权威例句

1. Phloem elements and adjacent tissues are the principal feeding sites for most aphids.

韧皮部及其邻近组织是大多数蚜虫的主要取食部位.

2. The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.

中柱包括从原形成层衍生而来的全部初生组织,由中柱鞘 、 韧质部和木质部组成.

3. Primary phloem PHLOEM derived from the procambium in the young plant.

初生韧皮部:指幼嫩植物中来源于原形成层的韧皮部.

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4. Sugar transport in phloem depends on sugar transporters, and sugar transporters have dual functions, i.

糖在韧皮部中的运输是由糖转运蛋白完成的, 糖转运蛋白具有双重功能, 即糖载体和糖传感.

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5. The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.

残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况.

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