Vascular plants plants containing differentiated cells forming conducting tissue ( vascular tissue , also known as fascicular tissue ) , which comprises the xylem and phloem 维管植物:具有能够形成体内运输组织(维管组织:包括木质部和韧皮部)的分化细胞的植物。
8 days after grafting , most part of the necrosis layer in the graft union disappeared and continuous wound vascular bundle connecting both graft partners could be recognized 嫁接后8d ,形成贯通接穗和砧木的维管组织桥,以后随着发育天数的增加其数目也随之增加。
" however , the power to conduct disciplinary proceedings , deliver a verdict and award punishment will continue to rest with the professional regulatory bodies , " dr yeoh stated 杨医生说:但是,纪律研讯、裁决和施加纪律处分的权力,仍继续由专业的规管组织行使。
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 它的特点为:围绕在维管组织外层的维管束薄壁细胞较大,并含有较大的叶绿体,这些叶绿体中不含基粒,但形成淀粉粒。
Roots also differ from roots in the arrangement of xylem and phloem , having a solid central strand of vascular tissue rather than a hollow cylinder of conducting tissue 根和茎不同,它无叶绿素,没有芽和叶,木质部和韧皮部的排列顺序也不同,其内部为实心的维管组织,而茎的内部为中空的圆柱形输导组织。
Hydrophytes show certain adaptations to such habitats , notably development of aerenchyma , reduction of cuticle , root system , and mechanical and vascular tissues , and divided leaves 水生植物表现出适应水生的特性:具有发达的通气组织;表皮、根系、机械组织、维管组织退化;叶片分裂;叶片、根和茎中均具有通气道或气腔。
It has been found to be localized to the major microtubule organizing center in its respective cells . there is also evidence to suggest that it is required for the normal duplication and segregation of the microtubule organizing center 而且相关研究表明它主要定位在微管组织中心上,是微管组织进行正常的复制、分裂的一种必需成分。
Change in the concentration of endogenous iaa was monitored with enzyme - linked immunosorbent assays elisa , and iaa localization in the tissues was demonstrated by means of immunogold - silver microscopy , with authors modification , during the regeneration after girdling in L . vent .剥皮后维管组织再生过程中内源iaa浓度的变化,并用改进的免疫金银法测定了此过程中内源iaa在不同组织中的分布。
Further development of disseminated tumor can spread from the lungs directly penetrated the chest wall , mediastinum , heart , vascular and other neighboring tube organizations ; after blood lymphatic metastasis to other parts of the body through the respiratory tract or disseminated to other lobe 癌肿进一步发展播散则可从肺直接蔓延侵入胸壁、纵隔、心脏、大血管等邻近器管组织;经淋巴道血道转移到身体其他部位或经呼吸道播散到其他肺叶。
The results indicated that liangyoupeijiu showed better plant and leaf type , higher ratio of grains to leaf area and larger photosynthesis area , stronger ability of population dry matter accumulation during the period of vegetative growth especially from heading to being mature , longer leaf duration and grains - filling after heading than that of its parents and controls s ; more grains per panicle , lager all sink per plant and 1000 - grain weight 结果表明:两优培九株叶型好,粒叶比和光合面积大,营养生长期群体干物质积累能力强,始穗后叶片功能期长、籽粒灌浆持续时间较长,抽穗期至成熟期的干物质增量明显强于其亲本和对照组合;穗颈节间维管组织比亲本及对照发达;两优培九单株总库容量大,每穗实粒数多,千粒重较大。