茎

The large stem and loop structure can be constructed from the sequence surrounding the 5' and 3' ends of the 16S rRNA gene.The stem is about h alf shorter than that of tobacco,due to a 79 bp deletion in Brassica napus chlor oplast.

5%、96.1%。油菜叶绿体16SrRNA基因5＇端上游及3＇端下游的顺序能互补而形成一个较大的茎环结构，但与烟草相比，由于3＇端下游顺序有79bp的缺失，因此，该结构中的茎部分大小仅为烟草的二分之一。

The latent carrying percentage was that Chlorotic Leaf Spot Virus was 70—100% Stem Pitting Virus 80—100% and Stem Grooving...

其潜带率是：褪绿叶斑病毒为70—100%；茎痘病毒为80～100%；茎沟槽病毒为20—40%。

Apple latent vrius ; latent carrying percentage ; Chlorotic Leaf Spot Virus ; Stem Pitting Virus ; Stem Grooving Virus

苹果潜隐病毒；潜带率；褪绿叶斑病毒；茎痘病毒；茎沟槽病毒

Inflorescence a terminal spike on pseudostems or on separate shoots arising from rhizomes, sometimes appearing before leaves; peduncle erect; bracts connate for ca. 1/2 their length and forming pouches, spreading at free ends, each subtending a cincinnus of 2--7 flowers, apical bracts often differently colored, large, sterile, forming a coma; bracteoles free to base.

顶生穗状花序生假茎或独立的由根状茎生的嫩枝，有时出现在叶之前；花序梗直立；苞片合生约1/2的其长度和形成小袋，小苞片离生至基部。

Clasping the stem, as the bases of certain leaves do.

抱茎的抱茎的，如某些叶的基部

Mean leaf area ratio （equal to IMR/SIA） and net assimilation rate were coequally important in determining the response of RGR to nitrogen levels in A.

随氮素的增加，紫茎泽兰的比叶面积降低，飞机草的SIA升高，但在所有氮水平下，前者的SIA都高于后者，紫茎泽兰SIA的变化规律更利于植物适应氮环境。

A hydroponical experiment was carried out to study the toxicity of copper, cadmium and their combined pollution on ultrastructure of Commelina bengalensis Linn. Transmission Electron Microscope was used to investigate the effect of heavy metal on ultrastructure of different parts of plants.

为了解铜、镉对泡泡草根、茎、叶细胞亚显微结构的毒害及作用位点，以期为进一步研究鸭跖草属植物的耐重金属机理提供理论基础，本文通过透射电子显微技术研究了75 μmol·L-1铜和50μml·L-1镉及其交互污染对泡泡草根、茎、叶细胞超微结构的影响和铜、镉在细胞中的分布。

At present, regeneration system of cotyledons, hypocotyls, and stems, protoplasts and cotyledons codes have been established among Cucurbitaceae. There are several methods of transformation, such as agrobacteria -medidated genetic, particle gun, pollen tube passage, DNA soaking, ovary embryonary sac injection. Transgenic is tending to antivirotic and delayed maturity. Selection marker used often is NPT II.

目前，在葫芦科植物中已建立了子叶、茎尖、胚轴、茎段、原生质体和子叶节等的再生体系；用于遗传转化的方法有农杆菌介导法、基因枪法、花粉管通道法、DNA浸泡法等；用于转化的目的基因多为抗病毒病基因和延迟成熟的基因；NPTII基因为最常用的筛选标记基因。

Banana fruit were inoculated by conidia suspension, conidia germinated within 6hr, produced dilutus appressoria within 12hr,produced dematiaceous appressoria within 24hr.

分生孢子在叶部、假茎与在果实上的发育过程相似，但假茎上暗色附着胞形成部位不象叶部和果实上那样局限于细胞间隙。

Flower buds ± cylindric; leaf blade broadly ovate basally on stem, usually triangular-lanceolate to linear distally on stem

花芽多少圆筒状；叶片宽卵形的在茎基部，通常三角状披针形的到线形在茎上部 42 D。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失