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(1) Results: The microscopical characteristics such phellem, cortex, phloem and xylem were observed in the transverse section of the stem.

(2) In the axial systems, the phloem consists of sieve cells, phloem parenchyma cells, albuminous cell and phloem fibers. In the radial systems, it consists of phloem rays.

(3) Between primary xylem and primary phloem there are 2—3 layers of parenchymatous cells, regularly or irregularly arranged, but no cambial zone can be recognized.

(4) The sieve tube elements of the secondary phloem were relatively shorter, with simple sieve plates in the slightly inclined to almost horizontal end walls.

(5) Sugar transport in phloem depends on sugar transporters, and sugar transporters have dual functions, i.

(6) Primary phloem PHLOEM derived from the procambium in the young plant.

(7) While cultivated Radix Saposhnikovia had phloem transverse section of root with oil tube lining up 10-11 rings and xylem vessel with distinct annual ring.

(8) In vascular plants[sentencedict.com], the xylem and phloem serve to translocate such substances.

(9) Comparative anatomy of the secondary phloem of the stem in Cephalotaxus.

(10) Protophloem The first - formed PRIMARY PHLOEM, differentiated from the procambium in the region just behind the meristem.

(11) There are some sclerenchymatous cells outside the phloem of each vascular bundle to increase the supporting force of the petiole.

(12) There were phloem fiber bundle of stem outside vascular bundles.

(13) In the phloem laticifer disperse distribution likely ring, meanwhile, in the pith also disperse laticifer and secretory canal.

(14) In the axial system the phloem consists of sieve cells, phloem parenchyma cells, albuminous cells and phloem fibers.

(15) The ultrastructure of the secondary phloem of Rhus verniciflua Stokes was studies.

(16) So the aloin cells were special phloem parenchyma cells because they shared the same origin with the other phloem cells.

(17) Result: The phellem, phloem and xylem of wild bupleurum scorzonerifolium are different from those in the pharmacopoeia .

(18) But the speed of transmission is high for the transport of a chemical signal in the phloem.

(19) These cells stemmed from the promeristem, are the special phloem parenchyma cells.

(20) Fusarium spp. and Sporotrichum spp...It was also found that except the P. bolleana, the moisture of the phloem of the other three trees were higher than the healthy ones in Ningxia.

(21) Sieve area pores of mature sieve elements are lined with the thicker callose and plugged with the electron-opaque P-protein, which may be the response to wounding on the phloem in preparing samples.

(22) The area of duct is bigger than that of phloem in flag leaf and leaf sheath , but smaller in the first internode, primary branch and secondary branch.

(23) Morphological studies indicated that, in general, it needed 10 to 15 minutes for the stylet to reach the phloem and feed.

(24) The primary cambium is found in the stem and root between the phloem and xylem cells, and by division gives rise to the secondary phloem and xylem in woody dicotyledonous plants.

(25) Results The structures of the aloe leaves were basically similar as characterized by the presence of the large, well developed parenchymatous cells in the phloem pole where anthraquinones were stored.

(26) The origin of the midvein calli developed mainly from the vascular cylinder, the palisade tissues and the phloem parenchyma cells.

(27) Vascular cambium The ring of CAMBIUM formed by the activity of the interfascicular cambium and the intrafascicular cambium that gives rise to secondary xylem and secondary phloem.

(28) The main constituents of the axial system are sieve cells, phloem parenchyma cells, crystalliferous cells and radial plates.

(29) The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous cells.

(30) The growth of hypogeal stem contain tri-growth, and the anomalous secondary growth is the result of supernumerary cambium that derived from the outmost elements of secondary phloem.