叶原基

At the reproductive stage, RA68 was expressed in the inflorescence meristem, the tip of rachis branch, spikelet primordia, macrospore sac and pollen grains.

原位杂交分析结果表明：在幼苗期RA68主要在幼芽胚芽鞘的内外层细胞和幼叶原基的表层细胞中表达；转入生殖生长期后，在花序分生组织、枝梗原基顶端、花器官原基、大孢子囊和花粉粒中表达。

The results indicate that all of the peltate glandular hairs and head glandular hairs are from an origin—protoderm on the leaf primordium and young leaf, which outgrows on leaf surface and increase radial broad and form the initial cells of the glandular hairs.

研究结果表明，唇形科的腺毛不论是盾状腺毛类还是头状腺毛类，在发育上都是单起源的，即所有的腺毛均起源于叶原基或幼叶上的原表皮细胞。该细胞在叶表面向外突出生长，径向加宽，形成腺毛原始细胞。

The short shoot differentiation came from the lateral buds among the bud scales, in the initial stage, the lateral buds elongating, and then differentiating two "anisomerous"(one was small, the other was big) needle primordia in the elongating courses; the big one differentiating once more, and formed three needle primordia.

短枝的发育来源于长枝上芽鳞间的侧芽，在发育的初期，侧芽进行伸长生长，在伸长生长的过程中首先分化出一大一小&不对称&的两个针叶原基，大的叶原基进一步分化，形成三个针叶原基。

The results showed that the initiation of leaf and bracteal primordia took the S shape, and that of spikelet and floret took the rise stage of parabolic shape in relation to GDD (growing degree days after sowing) in wheat.

结果表明，小麦叶原基和苞叶原基分化与播后累积生长度日(GDD ，growingdegreedaysaftersowing)的关系呈S形曲线，而小穗原基和小花原基为上升段抛物曲线。

According to the shape of head, the glandular hairs were divided into capitate and pehate glandular hairs.

根据腺毛头部形状可把腺毛分为盾状腺毛和头状腺毛，二者均发生得很早，它们的原始细胞都来源于原表皮，一般在茎尖第1和第2片叶原基的原表皮细胞以及茎的1～2节间原表皮细胞中开始发生。

Both of them originated from the protodermal cells and formed four cells through two successive periclinal divisions.

两类表皮毛的原始细胞均起源于叶原基或幼叶的原表皮细胞，经过两次垂周分裂形成四细胞。

Subsequently,partitioning of cotyledon and shoot primordia in the upper layer of torpedo-stage somatic embryos took place.

随后鱼雷形胚上层分化形成芽原基和两个叶原基。

The leaf axis arises from the leaf buttress and maintains procambial continuity in the central region.

叶轴也来自叶原基和在中央区保留的原形成层细胞。

Leaves began to shape from the end of March until September, and the growth of young leaves terminated in November. In February or March of the next year, the leaves shot out of the ground. Finally, they withered in May. In addition, 4 phases exist in the process of leaf shaping (buttress forming, primordium, straplike leaf and sheath). At first, the leaf primordium shapes the zonary leaf, and then the plaits are formed at the bilateral base of the zonary leaf. Finally, the plaits close and form sheaths.

结果发现：中国石蒜的叶片在3月底开始分化，9月分化结束，11月，幼叶生长停止，并於翌年2、3月露出地面，5月即枯萎，完成生活史；叶片的形成经历4个阶段，即叶原座形成时期、叶原基生长时期、带状叶片的形成以及叶鞘的形成时期；叶原基先形成带状叶片，随后在其基部两侧形成褶，进而闭合发育成叶鞘。

Leaves began to shape from the end of March until September, and the growth of young leaves terminated in November. In February or March of the next year, the leaves shot out of the ground. Finally, they withered in May. In addition, 4 phases exist in the process of leaf shaping (buttress forming, primordium, straplike leaf and sheath).At first, the leaf primordium shapes the zonary leaf, and then the plaits are formed at the bilateral base of the zonary leaf. Finally, the plaits close and form sheaths.

结果发现：中国石蒜的叶片在3月底开始分化， 9月分化结束， 11月，幼叶生长停止，并于翌年2、3月露出地面， 5月即枯萎，完成生活史；叶片的形成经历4个阶段，即叶原座形成时期、叶原基生长时期、带状叶片的形成以及叶鞘的形成时期；叶原基先形成带状叶片，随后在其基部两侧形成褶，进而闭合发育成叶鞘。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐