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(一)忽布根状茎的初生褚造和忽布属及大麻属植物的地上茎相似。(二)根状茎的次生木臂部的特特征是:韧型纤维数量很多;木薄壁细胞数量少;薄管的木质成分对高锰酸维的反应不完全,呈现黑褐色,和单子集植物的木质反应相似。 (三)次生韧皮部的特征: 1.次生韧皮部在一定条件下能够不断地增厚。一年生到四年生的根状茎,韧皮部增厚的速度超过木质部。四、五年以上的根状茎,韧皮部的增厚停止。土壤条件不良,不管幼嫩的或粗老的根状茎,韧皮部都停止加厚。 2.次生韧皮部具有两种腔隙:一种是幅射状的腔隙,另一种是切向的腔隙。两种腔隙的形成的原因不同。(四)根状茎上正常木栓的起源,落皮唇的形成方式,及创伤木栓的产生等简述如下: 正常的木栓形成唇的起源有三:(l)初生皮唇的外唇细胞形成木栓形成唇。(2)中柱鞘位置的薄壁细胞形成木栓形成唇。(3)次生韧皮部细胞形成木栓形成唇。在次生韧皮部中经常产生落皮唇,它舆根状茎表面平行,脱落之后,根状茎表面是光滑的。次生韧皮部还经常出现一种环状木栓形成唇,形成环状木栓唇。最初围绕在伤口或纤维的周围的薄壁细胞,分化成这种封闭的小圆圈式的木径形成唇,它向圆圈的中央部分逐渐分生木栓细胞,最后把伤口堵塞住,或把纤维包围。少数的情况下,舒多环状木栓,彼此靠近,它们的木栓形成唇相连起来,位于木栓形成唇外方的韧皮部和环状木栓本身以后脱落掉,根状茎表面因而凹凸不平。根状茎受伤时,初生制造和次生制造的任何部位,如髓,次生韧皮部,或次生木质部中的薄壁细胞,都能再分化,分裂,增殖,形成创伤木栓形成唇。 (五)分泌组织包括分泌管道和分泌细胞。分泌管道是从原形成细胞分化来的,它的产生方式是溶生的,它是不分叉的,同时只存在于中柱鞘部位和初生韧皮部中。分泌耙胞则广泛分布在皮唇、髓、和所有的次生制造里,就是道管的侵填髓中也有分泌细胞存在。分泌管道和分泌细胞所含的分泌物质相同。显微化学分析,证明分泌细胞含有揉质、树脂、粘液、和蛋白质等成分,年幼的分泌细胞含揉质少,其他成分多,成熟年老的分泌细胞正相反,揉质含量多,其他成分少。此外分泌细胞还可能含有挥发油。
(a) The primary stalks of the rhizomes were similar to those of the genus Cannabis and the aerial stems of the genus Cannabis. (b) The secondary characteristics of the secondary wood arm of the rhizomes are: a large number of tough fibers; a small number of wood parenchyma cells; the woody components of thin tubes do not respond completely to the permanganate dimension, appear dark brown, and The woody response of monophyletic plants is similar. (C) The characteristics of secondary phloem: 1. The secondary phloem can continuously thicken under certain conditions. Rhizomes, which are born every year to four years old, thicken the phloem faster than xylem. For rhizomes of more than four or five years, thickening of the phloem ceased. Poor soil conditions, regardless of young or old rhizomes, phloem stops thickening. 2. The secondary phloem has two kinds of lacunae: one is a radial cavity and the other is a tangential cavity. The reason for the formation of the two cavities is different. (4) The origin of the normal cork on the rhizome, the formation of the falling lip, and the production of the traumatic corpus are briefly described as follows: The origin of the normal cork formation lip is three: (l) The outer lip of the primary lip The cells form a cork to form a lip. (2) Parenchyma cells in the perisylvate position form a cork to form a lip. (3) The secondary phloem cells form a cork to form a lip. In the secondary phloem, there is often a falling lip, which is parallel to the surface of the rhizome. After shedding, the rhizome surface is smooth. In the secondary phloem, there is often a ring of cork forming a lip, forming a ring of cork lips. The parenchyma cells, initially surrounding the wound or fiber, differentiate into this closed, small, circular wooden path forming a lip, which gradually divides the corkscrew into the central part of the circle and eventually blocks the wound or fibers. Surrounded. In a few cases, the Shudo ring corks are close to each other, and their corks form a lip, which is detached after the corks form the phloem outside the lip and the ring cork itself, and the rhythm surface is uneven. . When a rhizome is injured, any part of primary and secondary production, such as pith, secondary phloem, or parenchyma in secondary xylem, can re-differentiate, divide, multiply, and form a wounded cork to form a lip. (v) Secretory tissues include secretory tracts and secretory cells. The secretory tract is differentiated from the original forming cells. It is produced in a soluble manner. It is not bifurcated, but it is present only in the middle perisylvian sheath and in the primary phloem. Secretory cysts are widely distributed in the skin lip, pith, and all secondary production, that is, there are secretory cells in the medullary canal. Secretory channels and secretory cells contain the same secretory material. Microscopic chemical analysis showed that the secretory cells contained components such as rubbing substance, resin, mucus, and protein. The young secretory cells contained less rubbing and other components. The old mature secretory cells were the opposite, and the rubbing substance content was high. Less ingredients. In addition, secretory cells may also contain volatile oils.