bundle-sheath

基本解釋

Bundle sheath The ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf.
維管束鞘：在被子植物葉中，圍繞維管束的通常是一層薄壁或厚壁細(xì)胞。
The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.
主脈發(fā)達(dá)，有異細(xì)胞組成的維管束鞘，具雙生韌皮部。
The vascular bundle consists of vascular bundle sheath,xylem,phloem and big parenchymatous cells.
維管束由維管束鞘、木質(zhì)部、韌皮部和大型薄壁細(xì)胞組成。
Palisade tissue is rich in saliferous vacuoles, while vascular bundle sheath is obvious.
柵欄組織富含含鹽液泡泡，維管束鞘明顯。
The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana, but form starch grains.
它的特點(diǎn)為：圍繞在維管組織外層的維管束薄壁細(xì)胞較大，并含有較大的葉綠體，這些葉綠體中不含基粒，但形成淀粉粒。