Video cytological image analysis system and micrography were adopted to examine vessel elements in secondary xylem of phyllanthus emblica 摘要运用细胞图象分析系统及显微照相的方法，对余甘子次生木质部导管分子进行观察研究。
The vessel elements of secondary xylem in litchi chinensis are observed and studied by bio - microscope image analysis system and micrography 摘要运用细胞图像分析系统及显微照相的方法，对荔枝次生木质部导管分子进行了观察研究。
In seed plants the protoxylem occurs at the innermost edge of the vascular bundles in stems , but external to the later - formed xylem in roots 在种子植物中，原生木质部发生在茎的维管束的最内方，但在根中，位于后生木质部的外方。
Sap 1 . the solution of mineral salts and sugars that is found in xylem and phloem vessels and oozes out of cut stems 树液： 1 .是植物木质部与韧皮部管状分子中存在的含多种无机盐与碳水化合物的混和溶液，可以从植物茎上的切口处渗出。
Haplostele a type of protostele having a solid strand of stele with the xylem on the inside encircled by phloem , pericycle , and endodermis 单中柱：原生中柱的一种类型，是由韧皮部、中柱鞘和内皮层包围着内方的木质部构成的实心中柱。
The results showed that the root transactions had significant differences in periderm , phloem , and xylem between cultivated and wild salvia miltiorrhiza 结果表明，在解剖横切面上，栽培与野生丹参根的周皮、韧皮部、木质部具有显著差异。
The annual rings of plants growing in temperate climates can be seen in crosssection as two consecutive rings of light and dark - colored xylem tissue 在有显著季节性气候的地区中，不少植物的次生木质部在正常情况下，每年形成一轮（色浅层和色深层） 。
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。
