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Ovary inferior, 2-loculed, with 2 erect ovules per locule; styles 2 or 3, connate at base.

雄蕊15-20。子房下位,2室,具2直立胚珠每室;花柱2或3,在基部合生。

The part of the embryonic mesoderm, consisting of loosely packed , unspecialized cells set in a

间叶细胞胚胎的中胚层部分,由生长于胶状基质的、结构松散的、无特定功能的细胞组成,这些细胞将会发育成结缔组织、骨、软骨、血液及淋巴系统

When the pollen tube comes into the micropyle and contact one of the synergids, both synergids do not show any sign of degeneration.

在二细胞原胚的顶细胞和基细胞中,均可观察到与合子中形态相似的双亲质体和线粒体。

Histological structures of bursas of Fabricius were observed at the different developmental stages from chicken embryoes to chickens. The results were as follows. The bursa of Fabricius began to develop on the 13th day of post-hatching and its cell aggregated into the nodosity clique underneath the epithelium mucosae. On the 15th day of post-hatching, those cell cliques were surrounded by the flat epithelium and formed the basic structure of folliculus lymphaticus. The number of lymphocytes in the folliculus lymphaticus increased gradually, and the medulla and cortex of a majority of folliculus were not discriminated obviously. Until on the 7th day for chickens, the medulla and cortex of folliculus formed completely and the number of folliculus increased significantly. From 21 to 35 days old, the folliculus lymphaticus transformed from polygon into rectangle. Mucosa epithelial cells increased gradually and their cytoblasts arranged compactly into aline in the basilar part on the 35th day.

本研究观察了从鸡胚到出壳后的不同生长发育阶段法氏囊的组织结构,结果表明:胚胎13日龄时,法氏囊开始发育,粘膜上皮下形成结节状细胞集团;胚胎15日龄,聚集的细胞集团形成初始的淋巴滤泡;胚胎18日龄到出壳后1日龄,滤泡内淋巴细胞数量增多,多数滤泡髓质和皮质界限仍不明显;7日龄雏鸡法氏囊髓质皮质分界清晰,滤泡数量显著增多;21日龄到35日龄,滤泡由多边形逐渐转变成长方形;在35日龄时,粘膜上皮细胞逐渐增多,排列紧密,细胞核紧密排列成直线位于基底部。

The ovule of development is the one nucellus that make a group at first organization, because basilar segmentation is rapidder and form or two bags by the layer, bead by , other nucellus the organization laps inside and next alveolus stays in one aspect of the matter, bead aperture .

发育的胚珠最初是一整团珠心组织,由于基部的细胞分裂较快而形成一层或两层包被层—珠被,将其他珠心组织包裹在内并在一端留下一个小孔—珠孔。

Bead by, nucellus radical ministry and the place with bead confluent handle are called close a point , it is the place that bead handle vascular bundle enters gastrula.

珠被。珠心基部与珠柄汇合的部位称为合点,是珠柄维管束进入胚囊的位置。

Pekinensis . IAA at concentration of 0.4-1. 0 mg/L in solid MS medium incited many adventitious roots on hypocotyl segments. The earliest anatomic changes were observed on cut surface of hypocotyl segments under optical microscope 24 hours after IAA treatment: cytoplasmic and nuclear density became higher in a few of parenchytmatous cells adjacent to phloem in tissue of pericycle, followed by cell divisions.

在生长素诱导24h后,可借助显微切片观察到下胚轴切面附近明显的解剖学变化:首先是中柱鞘内靠近韧皮部的薄壁细胞的细胞质与细胞核变浓,染色加深,部分细胞分裂;随后是分裂的细胞团增大,逐渐形成根原基并分化出根冠。

Maize coleoptile ; Phototropism ; 6 methoxy 2 benzoxazolinone ; IAA

玉米胚芽鞘;向光性运动; 6-甲氧基-2-苯并唑啉酮; IAA

Pistillate flowers: calyx as in staminate flowers, persistent; corolla 4- or 5-lobed, base tubular and often inflated; reduced stamens absent; ovary sessile or with short pedicel, 1-loculed; ovules 2, pendulous from apex; stigma thick, peltate, apex concave, sometimes slightly oblique.

雌花: 花萼与雄花的相同,宿存;花冠4或5裂,基部管状和经常膨大;退化的雄蕊无;子房无梗或具短花梗,1室;胚珠2,从先端下垂;柱头粗,盾形的,凹的先端,有时稍的偏斜的。

Podocarpus; ovule 1 per carpel, basal; style usually present, with adaxial stigmatic tissue, sometimes absent; distinct stigma usually absent.

podocarpus;胚珠1 每心皮,基部;花柱通常宿存,具柱头组织,有时无;明显的柱头通常无。

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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

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。