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Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no obvious morphological differences in stoma shape and size.

结果：6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异；气孔表现出典型旱生植物的特征，略下陷，气孔保卫细胞被厚的角质层覆盖，并形成突起状角质唇状物；气孔大小、形状在种之间无明显区别；叶表面、茎表面气孔均属于无规则型，但形状明显不同，前者主要呈长方形或六边形，后者为窄条形或哑铃形。

Leaves alternate; stipules lanceolate, 4-8 mm; petiole 2-11(-13) cm, pubescent or glabrous; leaf blade ovate, elliptic, oblong or subelliptic,(5-)9-21 × 2.5-10 cm, papery, slightly rough, secondary veins 3 or 4 pairs along midvein, abaxial surface strigillose or pubescent on veins, rarely glabrous, adaxial surface sparsely appressed strigillose or glabrous, base broadly cuneate, rounded, or obtuse, margin denticulate, apex acuminate or caudate-acuminate. Glomerules usually unisexual, sometimes bisexual, in the axils of current and fallen leaves along normal leafy stems, 4-10 mm in diam.; male ones on proximal part of flower-bearing branches; female ones on distal part.

叶互生 托叶披针形，4-8毫米；叶柄2-11(-13)厘米，被短柔毛或无毛；叶片卵形，椭圆形，长方形或，( 5-)9-21 * 2.5-10 厘米，纸质，粗糙的稍，次脉3或4 对沿中脉，背面具短糙伏毛的或短柔毛在脉上，很少无毛，正面疏生贴伏具短糙伏毛的或无毛，通常单性的团伞花序，有时两性，在正常生叶的茎的叶和脱落叶的腋内，直径4-10毫米；在忍受花的分枝的下部上的雄性的；在上部上的雌性的。

Petiole 8-20 cm, glabrous; leaf blade 5-7-foliolate; leaflets sessile, abaxially green, oblanceolate, 10-25 × 5-12 cm, abaxially glabrous or with sparse whitish hairs, ferruginous tomentose at base and in axils of lateral veins, base cuneate, margin crenate-serrate with teeth crenulate-serrulate, apex acuminate to subcaudate; lateral veins in 18-25 pairs.

叶柄8-20厘米，无毛；叶片5-7具小叶；小叶无柄，背面绿色，倒披针形， 10-25 * 5-12 厘米，背面无毛或者有稀少带白色毛的，被锈色绒毛在基部和在侧脉腋处，基部楔形，边圆齿状锯齿具细圆齿到细锯齿的牙齿，18-25对的侧脉。

Stipules gradually deciduous, triangular, 1-2 mm, membranous; petiole often unequal in length, 0.5-7 cm; leaf blade dark green or green blue, ovate, lanceolate, or obovate-oblong, asymmetric, unequal or equal in size, 1-15 × 0.6-5 cm, thinly papery or submembranous, 3(or 5)-veined, lateral veins many, irregularly reticulate, external secondary veins anastomosing by margin, sometimes inconspicuous, cystoliths finely fusiform, conspicuous adaxially, base obliquely rounded or subcordate, sometimes cuneate, margin entire or sometimes undulate, apex shortly or long caudate-acuminate. Inflorescences solitary; male inflorescence a cymose panicle or racemelike, often longer than leaves; female cymes as long as or shorter than leaves, pedunculate.

逐渐落叶，三角形的托叶，1-2毫米，膜；叶柄通常不等长，0.5-7厘米；蓝色的深绿色的叶片或绿色，卵形，，或倒卵形长圆形，不对称，不等长或大小相等， 1-15 * 0.6-5 厘米，薄纸质的或近膜质， 3(或5)脉，侧脉很多，不规则网状，外部次脉网结的在边缘，有时不明显花序单生；雄花序一总状花序状的密伞圆锥花序或，通常长于叶；雌性聚伞花序等长或短于叶，有花序梗。

This paper determined the olfactory respones of Tetranychus viennensis to different plants odors with "Y" olfactometer and petri-dish, volatiles from leaves of different plants were absorbed with SPME and analyzed with GC-MS (gas chromatograph-mass spectrometer). At the same time, the effects of different host plants on the development of Tetranychus viennensis were determined by means of the leaf-dish rearing method , in addition, the contents of some chemicals in the leaves of different plants were also determined.

本文用&Y&形嗅觉仪法和培养皿法测试了山楂叶螨Tetranychus viennenis Zacher对不同植物气味物质的嗅觉反应，并利用固相微萃取SPME吸附、用气相色谱—质谱联用仪GC-MS(gas chromatograph-mass spectrometer)分析了不同植物叶片的挥发性物质成分：同时采用海绵水盘法饲养山楂叶螨，研究了不同植物对山楂叶螨生长发育的影响，并测定了不同植物叶片中一些生化物质的相对含量。

By PCR analysis and spreads the leaf examination with PPT in T0 regeneration, 4 transgenic plants were identified with a transferent frequency of 0.33%. In addition, we transfer the wheat Bar gene into wheat cultivated varieties with backcross way.

通过PCR检测和涂叶检测，初步证明其中有4株已将Bar基因整合到小麦基因组中并且得到表达，平均转化率为0.33%。

Seedlings of Trapa pseudoincisan, a typical floating-leaved macrophyte accumulated more biomass after exposing 30 days in high CO,, and the biomass advantage was due to dry weight increase in root, stem, leaf and petiole.

高co：浓度中生长30天的菱幼苗总生物量明显增加，这是根、茎、叶和叶柄干重均增加的结果。

A lot of study showed that: the main reason for this was that plantlets grew in the sealed vessel and depend on sugar in the medium, which resulted to poor development of leaf, unflexible open-close of stomata and low chlorophyll content. So, plantlets lose photosynthetic ability.

国内外许多研究报道认为，组培苗生长不够健壮主要原因是组培小植株长期在密闭环境中生长，靠培养基中的糖进行异养，而导致叶片表层结构发育差，气孔开闭功能差，叶片小，叶绿素含量低，最终使小植株丧失了光合作用的能力。

The results showed that after exposure of germinating seeds to low temperature stress, the germination energy, germination percentage, germination index and seed vigor index in Zhengdan958 soaked with any of chemical regulation treatments under low temperature stress were higher than those of the unsoaked controls; In the meantime, the seedlings height, dry matter weight, leaf area, chlorophyll content of maize seedling under low temperature stress was elevated by A, B two kinds of concentration, indicating positive effect on strengthening maize seedling.

结果表明，低温逆境下各化控处理均提高了郑单958的种子发芽势、发芽率、发芽指数和种子简易活力指数；A、B两种药剂处理比对照都明显提高了低温胁迫下玉米幼苗的苗高、干物重、叶面积以及叶绿素含量，起到了良好的壮苗作用。

Polly's Tree A dream tree, Polly's tree: a thicket of sticks, each speckled twig ending in a thin-paned leaf unlike any other on it or in a ghost flower flat as paper and of a color vaporish as frost-breath, more finical than any silk fan the Chinese ladies use to stir robin's egg air.

一棵梦想树，波莉的树：一束满是枝条的灌木丛，每个有斑点的细枝末梢都以薄薄的叶子而终犹如镶嵌的玻璃碎片彼此各不相同或终结于一朵鬼花平平如纸且色彩蒙胧好象霜结的哈气，挑剔过任何丝绸扇子中国女人用来把知更鸟蛋搅入空气。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。