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Scapose perennials with caudices covered with petioles of previous years; trichomes almost exclusively simple, restricted to leaf margins and sepals abaxially; stems leafless or with 1-3 leafy bracts

为第二年的叶柄所覆盖的有茎基的Scapose的多年生植物;毛状体几乎专门简单,对背面叶缘和萼片限制;茎无叶的或具1-3叶状苞片 11 A。 alaschanica 贺兰山南芥

Ratio of the external leaf surface to its volume was smaller in psammophytes than in mesophytes.

轴器官中普遍具有发达的机械组织,一些植物形成异常结构;根的周皮发达;茎中基本组织/半径比率较大;部分植物形成同化枝,有的茎、叶中存在粘液细胞或结晶。

Grass of willow leaf horsewhip belongs to herb of perennial of horsewhip female division, formal name: Verbena Bonariensis illustrious name: Purpletop Verbena, alias: Long bine horsewhip is South-American horsewhip grass, careless, originate in South America formerly of Brazil, Argentine and other places, the flower is cyme, small tubular flower is worn be born at spending cauline coping, open amaranth or lilac flower, along with spends a bine to consider individual plant tall to make an appointment with 100-150 centimeter, liu Xie is crossed opposite, the primary part of a historical period after sowing is elliptic brim somewhat notch, beautiful bine is smoked tall the Xie Zhuai after is the slightness leaf that be like willow shape the brim still has pointed notch, the bine is a square this a little bit very special, entire individual plant has cilium to feel the feeling that pricks thorn a bit, the meeting in ground of be out of office is cross of plant of fringy horsewhip female division with a few congeneric flowers, so often a few inflorescence upright among Yu Jusan and fringy model state plant appears.

柳叶马鞭草属于马鞭草科多年生草本植物,学名:Verbena bonariensis英名:purpletop verbena,别名:南美马鞭草。长茎马鞭草,原产于南美洲,花为聚伞花序,小筒状花着生于花茎顶部,开紫红色或淡紫色花,连同花茎算株高约100-150公分,柳叶为十字对生,播种后的初期叶为椭圆形边缘略有缺刻,花茎抽高后的叶转为细长型如柳叶状边缘仍有尖缺刻,茎为正方形这点十分非凡,全株都有纤毛摸起来有点刺刺的感觉,在野地里会与一些同属花为穗状的马鞭草科植物杂交,所以常有一些花序介于聚伞与穗状的中间型态植株出现。

Don.methodswith the stem of sterile seedling and fresh plants as exophyte, ms as a basic medium, 6-ba and naa hormone were adopted as the experimental variables.resultsms +1.0 mg / l 6-ba +1.0 mg / l naa induced the best effect of callus; higher concentrations of 6-ba with high concentrations of naa made callus densification and higher rate.conclusion different plant hormones and their different concentration ratios have different effects on the callus of halenia elliptica d.

方法以椭圆叶花锚种子培养的无菌苗的茎和新鲜植株的茎段为外殖体,ms为基本培养基,分别以6-ba和naa两种植物激素为变量进行实验研究。结果ms培养基+1.0 mg/l 6-ba+1.0 mg/l naa对诱导椭圆叶花锚愈伤组织的形成效果最佳;高浓度的6-ba配合较高浓度的naa诱导的愈伤组织致密,出愈率高。

The different climbing plants have different branching behaviour. Humulus scandens increases the chance of encountering the external support through increasing the number of branches on unit stem length, but Ampelopsis delavayana and Parthenocissus tricuspidata increase the chance of encountering the external support through increasing branch length.

不同攀援方式植株以及植物的不同生长形式均表现出了有差异的分枝行为,葎草通过增加单位茎长度的上分枝数以达到增加遇到外界支持物的机会,而三裂叶蛇葡萄和爬山虎则通过增加分枝长度的方法来增加遇到外界支持物的机会。

The results of observation on the microstructure of Karelinia caspica, Tamarix stromongolica, Salsola collina. Cheno Dodium glaucum, stipa bangenana show that the nutritional organs of these halophytes present some adaptability structures as follows:(1) sunken stomas, thick cuticle and orderly arrangement of epidermal cell;(2) equilateral leaves with developed palisade tissue, or squama-shaped leaf;(3) well-developed water-storing tissue in stems and leaves;(4) crystal cells, salt glands in most of the leaves and assimilating branches.

通过对花花柴、甘蒙怪柳、猪毛菜、灰绿藜、长芒草五种盐生植物显微结构观察,这五种盐生植物营养器官的形态结构均呈现一定的适应性特征:(1)气孔器下陷,角质层加厚,表皮细胞排列紧密而整齐;(2)多为等面叶,叶片栅栏组织发达,或退化为鳞片状,而具同化枝;(3)茎、叶多为肉质化,贮水组织发达;(4)具有含晶细胞,枝叶具盐腺。

Coarse perennial forming large leafy tussocks, also with widely spreading scaly rhizomes.

粗糙的多年生植物的形成大的多叶的草丛,也是的具宽平展的有鳞的根状茎。

They have long, narrow parallel-veined leaves, whorled or alternate, arising at the base of the stem or along it.

百合科植物具有狭长的叶,平行叶脉,叶轮生或互生,在茎基部或沿着茎生长。

The Plant tissue raise is the plant sterile culture technology, has the totipotency theory according to the vegetable cell, the use plant body exsomatize organ (for example root, stem, leaf, stem point, flower, fruit and so on), the organization (for example cambium, epidermis, cerebral cortex, marrow department cell, endosperm and so on) or the cell (for example big spore, small spore, somatic cell and so on) as well as the protoplast, in aseptic and suitable artificial culture medium and illumination, temperature and so on under artificial condition, can induce injuries the organization, not to decide the bud, the adventitious root, finally forms the complete adult plant the discipline.

植物组织培养即植物无菌培养技术,是根据植物细胞具有全能性的理论,利用植物体离体的器官(如根、茎、叶、茎尖、花、果实等)、组织(如形成层、表皮、皮层、髓部细胞、胚乳等)或细胞(如大孢子、小孢子、体细胞等)以及原生质体,在无菌和适宜的人工培养基及光照、温度等人工条件下,能诱导出愈伤组织、不定芽、不定根,最后形成完整的植株的学科。

Populus growth to a high degree of salinity in the soil, due to the Populus cells permeable than the average plant strong, and from the main root and lateral roots, trunk, bark and leaves to be able to absorb a lot of salt, and through the stems and leaves The excretion of salt gland secretion, when the accumulation of too much salt in the body, it can scar from the trunk section of the gap and will be automatically excretion of excess salt out to form a block of white or yellow crystal,"Populus Tears", commonly known as "Populus base."

胡杨能生长在高度盐渍化的土壤上,原因是胡杨的细胞透水性较一般植物强,它从主根、侧根、躯干、树皮到叶片都能吸收很多的盐分,并能通过茎叶的泌腺排泄盐分,当体内盐分积累过多时,它便能从树干的节疤和裂口处将多余的盐分自动排泄出去,形成白色或淡黄色的块状结晶,称&胡杨泪&,俗称&胡杨碱&。

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