栓皮形成層 的英文怎麼說
中文拼音 [shuānpíxíngchéngcéng]
栓皮形成層
英文
cork cambium-
If new cork cambia arise every few years, as in most species of woody plants, then the bark includes dead phloem and cortex as well as cork, and is termed rhytidome
若新的木栓形成層年年都有所加厚，像在多數的木本植物中，樹皮就包括死去的韌皮部，皮層以及木栓（軟木） ，這些部分共同構成落皮層。We have observed the following characteristics of anatomical structure and development : ( 1 ) the primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder ; ( 2 ) the root endodermis consists of thicken casparian strips, and there are from two lo four layers parenchyma cells near the pericycle ; ( 3 ) the pith and resins canals are absent in the toots ; ( 4 ) secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem ; ( 5 ) tanning materials are abundant in pericycle cells and phelloderm cells ; ( 6 ) sclereids are found in secondary phloem, and rays are rather rich in secondary xylem
結果表明：氣生不定根具有以下結構特徵和發育特點： （ 1 ）根為二原型，側根正對著木質部發生； （ 2 ）幼根內皮層細胞具凱氏帶加厚，維管柱內緊挨中柱鞘內側具有2 ~ 4層大型薄壁細胞； （ 2 ）根中無髓和樹脂道； （ 4 ）次生結構發生於根毛區，維管形成層由初生木質部和初生韌皮部之間的薄壁細胞轉化形成； （ 5 ）中柱鞘和栓內層細胞富含單寧類物質； （ 6 ）次生韌皮部有石細胞，次生木質部射線發達。If the same phellogen functions from year to year, as in beech and oak, then the bark is smooth and consists only of tissue external to the phloem, mainly cork
如在櫸木或橡木中，相同的木栓形成層年復一年的活動，那麼樹皮是光滑的，並且僅形成韌皮部的外方組織，主要是木栓（軟木） 。
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