芽生

Intrafascicular CAMBIUM between xylem and phloem . annual ring Secondary phloem See secondary growth .

这种细胞存在于根和芽的顶端分生组织以及在原来分裂组织基础上形成的侧生分生组织，如位于木质部和韧皮部之间的束中形成层。

However, at later stage ToPHAN appeared to be expressed in the boundary of bulbil primordia.

在较晚期的珠芽分生组织，更可以看到ToPHAN 表现在分生组织的边缘。

Unexpectedly, ToPHAN shared the same expression areas as ToSTM: both were expressed in the center of bulbil meristems but ToPHAN had even a wider expression area.

结果显示ToSTM、ToBP 和ToPHAN均有表现在珠芽分生组织，预期之外的是ToPHAN 在分生组织中心有较大的表现区域。

Sepals (2-)4 or 5(or 6), imbricate or decussate or rarely wholly united in bud, inner ones sometimes petaloid.

萼片(2-)4-5(-6)，在芽期覆瓦状排列或交互对生或很少完全合生，内部的萼片有时花瓣状。

Petals 4, imbricate in bud, free or shortly united at base .

花瓣4，在芽期覆瓦状排列，离生和基部较短合生。

The characteristics of ecological type and life form of plants in Artemisia ordosica community are the higher proportion of hemicryptophyte and vivacious herbage and the important role of xerophyte and psammophyte in the communities.

油蒿群落植物的生态-生活型特征明显，如地面芽植物最多；多年生草本植物所占的比重最大；旱生植物占重要地位：沙生植物占优势等。

Tufted with tillers, short rhizomes and stolons; leaf folded in bud; leaf blade bluish green, linear with boat-shape tip; inflorescence an open panicle; seeds awnless. Flowers from April to June.

本种爲簇生形，具分蘗*，亦具短的根茎及匍匐茎；叶在芽期是褶生；叶片蓝绿色，长条状，前端成船状；花序爲开放圆锥花序；种子无芒；花期4至6月。

The research on the tissue culture and cell suspension culture showed that thesuitable culture medium for inducing bud was MS supplemented with 1.5mg/L 6-BAand 0.1mg/L NAA, and for the generation-continuing multiplication was MSsupplemented with 1.5mg/L 6-BA and 0.2mg/L NAA. The rooting medium was1/2MS supplemented with 0.5mg/L IBA and the rooting rate was 45.0%. Plantletsurvival after transfer to sand was 52.5%.The induction rate of calli was66.7%～86.6% and the optimum medium was MS medium with 0.5mg/L 6-BA and2.0mg/L 2,4-D. The calli became smallest partical size, friable and had gooddispersion ability after 3 times successive transfer culture, the optimum medium wasMS medium with 0.2mg/L 6-BA and 2.0mg/L 2,4-D. Culturing these particles on sixkinds of MS liquid media with different hormone contents, the optimum medium wasselected basing on he change of the density of single-cell, the density of cellaggrefate and the mass of cell.

对蒜头果进行的组织培养与细胞悬浮培养研究结果表明：MS+6-BA1.5mg／L+NAA0.1mg／L+蔗糖3％激素组合能够较好地诱导芽的初始分化和增殖，适宜的芽苗继代增殖培养基为MS+6-BA1.5mg／L+NAA0.2mg／L+蔗糖3％；采用1／2MS+IBA0.5mg／L+蔗糖3％为生根培养基，生根率为45.0％；移栽到河沙的生根苗成活率为52.5％；愈伤组织诱导率为66.7％～86.6％，其中以MS+6-BA0.5mg／L+2，4-D2.0mg／L+蔗糖3％的培养基最佳，其诱导出的愈伤组织具有较强的增殖能力和较好的脆散结构，最佳继代培养基为MS+6-BA0.2mg／L+2，4-D2.0mg／L+蔗糖3％，且培养基中的6-BA与2，4-D浓度的比值越小，愈伤组织生长越快，结构越脆散，增殖率越高；将继代后的愈伤组织转入6种含不同激素浓度组合的MS液体培养基中进行振荡培养，在综合分析各培养基的单细胞密度，细胞团块密度，细胞生物量增长率等指标后，初步筛选出MS+6-BA0.2mg／L+2，4-D2.0mg／L培养基为较好的液体培养基。

Axillary wintern bud solitary; terminal winter bud absent.

Axillary的wintern 芽孤独；顶生的冬芽无。

Branches unarmed. Axillary winter buds 1 or 3, lateral buds flower buds, central bud a leaf bud; terminal winter buds present.

分枝无刺。 Axillary冬芽1或者3，侧芽花芽，中心叶芽；顶生的冬芽宿存。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。