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球形

与 球形 相关的网络例句 [注:此内容来源于网络,仅供参考]

Seeds obovoid to ellipsoid, longitudinally striate, apex usually apiculate.

种子倒卵球形到椭圆形,纵向具条纹,先端通常具细尖。

Mature fruit yellow, ovoid-oblong, 1.2-2 cm, apiculate.

成熟的果黄,卵球形长圆形,1.2-2厘米,具细尖。

Seeds globose, ovoid, or fusiform, small, sometimes appendaged; appendage caudate; embryo straight, minute, enclosed by fleshy endosperm.

种子球状,卵球形,或者纺锤形,小,有时有附属物;附属物有尾尖;胚直,小,被肉质的胚乳包围。

It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.

首次在买麻藤属植物的雌配子体中观察到2个游离核位于配子体的中央位置,且被一团原生质所包围的,其余的游离核位于边缘的现象以及花粉管进入雌配子体前,合点端的核已经发生胞质分裂形成多核细胞的现象 4、买麻藤的花粉近球形或扁平型,有单萌发孔,外壁表面具小刺状纹饰,小刺基部宽大,末端尖或钝圆。

Flower buds terminal or axillary, ovoid-globose, pubescent with gray or brown appressed trichomes.

花芽顶生或腋生,卵球状球形,短柔毛具灰色的或棕色贴伏毛状体。

Branches 8–10 per node; culm bud 1, narrowly ovoid, appressed, margins white ciliate.

每节分枝8-10;秆芽1,狭卵球形,贴伏,边缘白色纤毛虫。

Corona lobes ovoid, erect and closely appressed to anthers, distinctly shorter than gynostegium.

副花冠裂片卵球形,直立和接近贴伏于花药,明显短于合蕊冠。

Could be observed on 10th day after pollination, archesporial cell on 20thday, megasporocyte on 24th day, the functional megaspore on 30th day; and 8-nucleate embryo sac on 41th day. And then double fertilization finish and early globular embryo emerg.

授粉10 d出现指状突起,20 d形成胚珠原基,24 d大孢子母细胞发生,30 d功能大孢子形成,41 d发育为成熟的八核胚囊,而后完成双受精发育成早期球形胚。

Seeds numerous, ovoid or slightly compressed, arillate; embryo compressed; cotyledons long elliptic.

种子许多,卵球形或稍压扁,具假种皮;胚压扁;子叶长椭圆形。

As shown under TEM, young cleistothecia interwoven by vegetative hypha are composed a mass of ascogenous hypha which presented binuclei and, most of all, a plenty of organelles, cspecially β-glycogen, polyribosome, lomasomes,...

它们与细胞分化、胞壁形成、质膜和核膜的构建密切相关。在子囊形成时,这种特殊结构逐渐减少和消失,并见大量球形颗粒和空泡,后者可能与子囊胞质胞裂、孢子形成有关。

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