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- ResultsThe root of Tylophora atrolliculata Metc. had amphicribral vascular bundle, however steme had bicollateral vascular bundle. 方法利用显微镜观察其根、茎的横切面结构组织与根粉末特征。
- amphicribral vascular bundle 周期性维管束
- amphicribral concentric vascular bundle 双韧同心维管束
- Bundle sheath The ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf. 维管束鞘：在被子植物叶中，围绕维管束的通常是一层薄壁或厚壁细胞。
- The characteristics of vascular bundle in the first internode and grain-filling of heavy panicle hybrid rice (HPHR) were studied. 摘要对重穗型杂交稻穗颈节间维管束特徵及其籽粒充实进行了研究。
- The nectaries were composed of epidermis, nectariferous tissue and vascular bundle which only consisted of phome. 蜜腺由分泌表皮、产蜜组织和仅含韧皮部的维管束组成。
- Vascular bundle have not cambium layer, vessel, and spiral tracheid as well.Only sieve element. 维管束无形成层，无导管，也不具有螺纹管胞，只有筛分子。
- It shows one sheath around the vascular bundles. 它显示出在维管束周围的鞘状构造。
- Ginkgo biloba leaf petiole, is actually composed of many vein from the collection of vascular bundle group. 银杏叶的叶柄，实际上是由许多叶脉集合而成的维管束群。
- Vascular bundle equal distributed in circumfuse of two cotyledons, formed a circule. 摘要莲子叶组织中的维管束均等的分布于两瓣子叶里，形成1周。
- The vascular bundle consists of vascular bundle sheath,xylem,phloem and big parenchymatous cells. 维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。
- Male-sterility mainly results from the abnormality of mesospore,tapetum tissue and vascular bundle. 中层组织、绒毡层组织及药隔维管束异常均是雄性败育的因素。
- The large vascular bundle number of panicle neck internode was higher in Indica cultivars than in Japonica cultivars. 结果显示，参试品种穗颈节间大维管束数目，籼稻品种比稉稻品种多。
- The spongy cell arranged densely.The vascular bundle sheat and the phloem were colored more red. 维管束的导管口径变小，维管束鞘和韧皮部的细胞番红染色加重。
- The vascular bundle area in 2nd internode below the ear of cold type wheat is obvious smaller than warm type wheat's. 冷型小麦倒二节间中维管束面积明显小于暖型小麦；
- Collateral or bicollateral vascular bundle, developmental pith and medullary ray are obvious. 髓部发达，髓射线明显。
- The vascular bundle has a similar spikelet number load and sink load in the HPHR and Shanyou 63. 重穗型组合的维管束颖花负荷量、总库容负荷量均与汕优63相当。
- It does not show sheaths around the vascular bundles. 它并没有显示出在维管束周围的鞘状构造。
- Palisade tissue is rich in saliferous vacuoles, while vascular bundle sheath is obvious. 栅栏组织富含含盐液泡泡，维管束鞘明显。
- With the moso bamboo growth, the vascular bundle begins to enlarge and the parachyma cell wall also crystallizes. 在竹笋生长后期，纤维帽逐渐形成且不断增大，薄壁细胞壁呈现结晶。
