中胚叶

All the contents of Extractable heavy metal like Pb, Cu, Zn and Cd in limestone slagged wasteland are higher than those in contrapositive soil nearby. The slag filtrate has no effect on seed germination rate of Mung beans, Broad beans and Corns but restrains their germination vigor and protraction of hypocotyls with root restraint rate exceeding 30-50%; While it has an apparent effect on germination rate and germination vigor of sensitive seeds like Beans with P=0.05. Simulate to plant the 4 different seeds in pot for a month, Test groups have a lower data in total leaf area, plant height and weight but a much higher content of protective materials like PRO and MDA in biochemical mensuration experiment compared with CK group.

石灰炉渣废弃地中Pb、Cu、Zn、Cd重金属有效态含量均高于临近对照土壤，其炉渣淋出液对绿豆、蚕豆、玉米3种植物种子发芽率无影响，但均抑制其发芽势和下胚轴伸长，根长抑制率达30%~50%以上，对敏感种子黄豆的发芽率、发芽势（4d）影响明显，摸拟盆栽一个月苗期，4种植物试验组在总叶面积、株高、生物量方面均低于对照组；生理生化测定，4种植物其体内抗逆性保护物质脯氨酸和膜过氧化产物丙二醛含量试验组均高于对照组。

In cotyledon, on one hand, very weak GUS staining was observed in PARF8:GUS, but very strong was found in phyA-209 PARF8:GUS. In the shoot apical meristem, hypocotyle and root tip, on the other hand, phyA-209 PARF8:GUS exhibited weaker GUS activity than PARF8:GUS. Interestedly the same expression patterns of ARF8 resulting from disruption of PhyA have been observed in dark, white-light and far-red-light conditions.

结果表明，无论在黑暗、白光和远红光条件下，PhyA突变均明显提高幼苗子叶和叶片中ARF8的表达水平，但明显降低幼苗下胚轴、茎尖和根尖中的表达水平。

The morphological and anatomical characteristics of"Zha′ai 76"Comparing with the plants of normal M.baccata and ordinary hybrid,"Zha′ai76"and other plants with Dw major gene showed that:the length of springgrowth or main shoot is shorter by 59.6-66.2%;the ratio of length:diame-ter of new shoot smaller by 33.2-58.4%;the length of internee shorter by14.0-42.7%:the node number of spring growth lesser by 40.7%;the cauli-cle height under the cotyledons of hybrid seedlings shorter by 65.0%;the in-dex of leaf stalk(stipe length:stipe thiek ness)on the spring growth smaller by34.5-50.2%;the length of leaf stalk shorter by 25.2-45.7%;the boundarybelt between spring and autumn growth has knob-like nodes;the margin of leafappears wave-like;the sepals with spinous proeessuses are massive and small;the eonstriction at calyx is not obvious;the trace of abscisic sepals is big;the ca-lyx end of fruit is plan or convex;the shape of shoot tip(of"Zha′ai 76")iswider and shorter;and in 1.0mm part from the top of shoot tip,there are manyspecialized cells which are larger in volarae,but with lesser inner material andwith smaller or no nucleus.

"扎矮76"的形态解剖特征与普通山定子和杂交后代中普通型植株对比，"扎矮76"和其它携带Dw主基因植株的：春梢短59.6-66.2％，梢长与梢粗比值小33.2-58.4％，节间短14.0-42.7％，春梢节数少40.7％，杂种苗下胚轴短65.0％，春梢叶柄形指数小34.5-50.2％，叶柄短25.2-45.7％，春秋梢交界处有瘤状突起，叶缘波状，萼片肥厚有刺状突起，萼部缢痕不明显，脱萼后萼痕较大、萼洼平或高于果面；新梢生长点宽而短，在距顶端1.0gmm处有较多体积较大、内容物较少、细胞核小或无的待化细胞。

The effects of auxins and cytokinins on the process of somatic embryo genesis and embryoid growth of Oxalis traingularis A.St.Hil. by Tissue culture were studied.

通过组织培养方法，探讨生长素和细胞分裂素在紫叶酢浆草体细胞胚诱导和发育过程中的作用。

The authors make a study on the effects of auxins and cytokinins on the process of somatic embryo genesis and embryoid growth of Oxalis train gularis Subsg. Trian.

本文通过组织培养方法，探讨生长素和细胞分裂素在紫叶酢浆草体细胞胚诱导和发育过程中的作用。

The deduced amino acid sequences of HbHDT1 showed high identities (65％, 59％, 50%, 45%, 43％ and 40%, respectively)to those of the histone deacetylase from Ricinus communis, Populus trichocarpa, Solanum chacoense, Trifolium pretense, Glycine max and Triticum aestivum.

该氨基酸序列与蓖麻、毛果杨、马铃薯、红花苜蓿、大豆、小麦的HDACs家族成员的同源性分别为65％、59％、50％、45％、43％和40％。半定量RT-PCR分析结果表明HbHDT1在巴西橡胶树的花、愈伤组织、胚、叶、芽、胶乳中均有表达。

In the Filicinophyta, Sphenophyta, and Lyophyta the embryo sporophyte produces a footlike structure that remains embedded in the tissues of the parent gametophyte plant, absorbing nutrients like the suspensor of higher plants.

在真蕨门 filicinophyta ，楔叶门 sphenophyta，和石松门 lycophyta 中，胚胎孢子体产生足状结构，仍然包裹于双亲配子体植物内。胚胎吸收营养的方式同高等植物从胚柄那样吸收营养一样。

It was found that the extract of Ficus carica leaves showed remarkable inhibitory and killing effects on the Newcastle disease virus.

采用组织细胞培养技术，充分利用无花果叶提取物中的有效成分，在人上皮样癌（Hep-2）细胞株、地鼠肾（BHK21）细胞株和鸡胚成纤维细胞上研究其抗新城疫病毒的作用。

Leaves radical, tufted; peti- ole slender,(2–)4–9(–11) cm; leaf blade orbiculate, orbiculate-elliptic, or ovate, variable even on same plant,(0.5–)1.5–5 ×(0.3–)1.5–5.5 cm, thinly leathery, abaxially pale green, adaxially dark green, base truncate, subcordate, or attenuate and shortly decurrent into petiole, margin apiculately obtuse-serrate, rarely subentire, and often undulate, apex rounded to truncate and sometimes minutely retuse; secondary veins 3 or 4 on each side of midvein.

叶胚根，丛生； peti纤细的ole，(2-)4-9(-11)厘米；叶片圆形，圆形的椭圆形，或卵形，即使在相同的植株上也易变，( 0.5-)1.5-5 *(0.3-)1.5-5.5 厘米，薄革质，背面的苍绿色，正面深绿色，基础截形，近心形，或渐狭和短下延成叶柄，次脉在中脉两边各3或4。

MS medium equipmented with different kinds and concentrations of phytohormones were used to induce and subcultrue of calli from suaeda salsa L.

mg/ L上培养出盐地碱蓬的无菌苗，然后在 MS基本培养基中添加不同的激素种类及浓度配比，对所培养的无菌苗的下胚轴和叶进行愈伤组织的诱导与继代。

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