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But when we examined the structure of cultivar of D. huoshanense, endomycorhiza was founded unexpectedly. And in the wild type of D. huoshanense, fungi was also founded in its stems and leaves. So the author thought that endomycorhiza is not only located in the roots of Dendiobium plants, but also exists in other organs of plants, including stems, leaves. As plant produces seeds, mycorhiza could enter into the cells of seeds. When mature seeds germinate in media, the endomycorhiza enter into the roots of cultivar.

石斛属植物与真菌共生,根为菌根,作者在研究霍山石斛组织培养型结构时发现,组织培养苗的根部也分布有真菌,而且在野生霍山石斛的茎、叶中发现有真菌,作者因而指出,真菌并不是完全分布在根部,而是遍布于整个植物体,推测植物形成种子时,真菌进入种子,所以在组织培养时,真菌随着种子的萌发,进入植物体根部。

With the increasing of water lever, Myriophyllum spicatum increased the plant height, allocated more biomass to their leaves and decreased the allocation to roots and stems. However, Potamogeton maackianus allocated most biomass to their stems and decreased the allocation to leaves and roots.

实验发现:随着水位上升,狐尾藻株高也增加,并且将更多的生物量分配到叶片部分,减少对根和茎的资源投入;而微齿眼子菜则将生物量大部分投入到茎杆,减少对叶片和根的资源分配。

The present doctoral dissertation was carried out to study the chemical constituents isolated from stems of two medicinal schisandraceous plants.34 compounds were isolated from the ethanol extracts of the stems S.henryi collected in the Jiangxi province by various column chromatographies.27 of them were identified on the basis of spectral analysis.There are 18 lignans,(including 5 dibenzocyclooctadienes,6 aryltetralins,2 tetrahydrofurans,3 diarylbutanes,2 other lignans),3 flavanols,2 glyceroesters,1 naphthoquinone,1 xanthine and 2 steroids,of which 6 compounds were new compounds,and 7 compounds were isolated from this family for the first time.

采用多种色谱技术进行分离纯化,从翼梗五味子藤茎的乙醇提取物中分离到34个化合物,综合运用现代波谱学技术鉴定了27个化合物,包括木脂素类化合物18个(其中联苯环辛烯类木脂素5个,芳基四氢萘类木脂素6个,四氢呋喃类木脂素2个,二芳基丁烷类3个,其他类型木脂素2个),黄烷醇类化合物3个,甘油酯类化合物2个,萘醌类化合物1个,黄嘌呤类化合物1个,甾体类化合物2个,其中,5个为新化合物,7个为本科首次报道。

Proximal bone stress transfer has been thought to be less in association with proximally coated stems as compared with extensively coated stems.

近端涂层的股骨柄与广泛涂层的股骨柄相比,近端骨压力传导被认为较小。

Stems (8-)10-30 cm; leaves never rosulate; inflorescences shorter than stems.

茎(8-)10-30厘米;从未的叶莲座状;花序短于茎。

Stems branching sympodially; flowering stems arising singly from slender stolons, often creeping and rooting at lower nodes.

茎分枝sympodially;花茎从纤细的匍匐茎单个出现,爬去的通常和在下部节上生根。

Methods From 1980 to 1996, AP radiographic plain films of 112 cases were analyzed.There were 84 cemented stems and 28 uncemented stems.

摘要] 目的分析股骨假体周围骨溶解的发生情况、程度和方式,了解骨溶解与假体松动的关系。

Stems and leaves were determined and compared by al(no3)3 colorimetry and hplc. the method with ultrasonic wave was applied to extract flavonoids from the leaves and stems of urtica dioical l.. with the contents of flavonoids as the index, the best extraction conditions were selected out. results the best extraction conditions were as follows:soaking the raw material with ethanol(80%, v/v)-water solution (1∶30) at 60℃.

方法分别采用al(no3)3络合分光光度法和hplc法测定异株荨麻茎叶中黄酮类化合物的含量,并对测定结果进行比较;同时以黄酮类化合物的含量为指标,优选出了超声波辅助法提取异株荨麻茎叶中黄酮类化合物的最佳条件。

Leaves verticillate and alternate apically on stems, verticillate basally on old stems

轮生和互生的叶顶部在茎上,基部在老茎上轮生 87 S。 dimorphophyllum 二型叶景天

Mozzie buster of the leaves is very large, is a tender green, which grow on long, thin stems, which is about 30 centimeters, about 2 mm thick, leaves a very small, very beautiful, close to the smell is very fragrant, hand - feels very smooth, like a baby's little hands, very cute, you just look at the last touch of your hand will be like perfume, like incense, and it also provides a long green hair, like a dense, long hair quickly, often pressure have thin stems Wanle Yao, every time when my mother to call it cut their hair, Mozzie buster it can not according to the sun, and if the sun shining or not watering, it's life would soon end.

驱蚊草的叶子非常多,是嫩绿色的,它长在长长的、细细的茎上,它长约30厘米,粗约2毫米,叶子很小,非常漂亮,靠近闻起来很香,用手摸起来很光滑,就像婴儿的小手,非常可爱,你只要在上摸一下你的手就会像香水一样香了,它长的又特像密密麻麻的绿色头发,头发长的很快,经常压得细细的茎弯了腰,每当这时妈妈就给它修剪头发,驱蚊草它不可以照阳光,要是照着阳光或没有浇水,它的生命很快就会结束。

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