(Xylem) Xylem) 是高等植物的输导组织/ 维管组织 由 4 种不同的细胞组成: 1) 管胞(tracheids) 2) 木质导管(xylem vessels) 3) 木质部薄壁细胞(xylem parenchyma) 4) 木质部纤维(xylem fibres) 分布: 1) 根部- 位在中央,呈十字形 --> 增强被风...
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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.
木质部导管呈放射状排列,但年轮状不明显。防风栽培品根横切面韧皮部油管10~11轮;
Results:The circular belt of sclereids in the phelloderm, secondary xylem vessel order of the transverse section, and tetrarch of the primary xylem were microscopic characters.
结果:根横切面上栓内层的石细胞环带和次生木质部导管的排列方式、初生木质部为四原型等为显微鉴别特征;
The anatomy structure photos of primal root showed the stronger drought-resistance varieties had the bigger diameter of primal root, the thicker cortex and smaller diameter of the main xylem vessel.
初生根解剖结构分析表明,抗旱性强的品种表现为初生根直径大,皮层厚,中央大导管直径小。
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