查询词典 ovule

We studied reproductive traits of this species such as phenology of capitulum, ratio of pollen to ovule, self-compatibility, pollen viability, visiting insects and germination potential of seed by experimental observation and bagging treatment in order to assess the association of these reproductive traits with invasiveness.

通过实验观察和人工控制套袋等方法，对其花序开花动态、花粉胚珠比、自交亲和性、花粉活力、访花昆虫和种子的萌发率等与繁殖相关的特征进行了研究，探讨了这些繁殖特征与入侵性的关系。

Carpels 10 to numerous; ovule 1 per carpel; ovary attenuate into a subulate style.

心皮10到多数；每心皮胚珠1；子房渐狭窄成为一种钻形的花柱。

Carpels numerous, spirally arranged on a convex receptacle; ovule 1 per carpel, erect.

心皮多数，在一个凸的花托上螺旋状排列；胚珠1 每心皮，直立。

It usually enters the ovule through the micropyle, but in some species, such as beech it may enter through the chalaza chalazogamy

花粉管一般通过珠孔进入胚珠，但在某些种中，如山毛榉，它可能是通过合点进入胚珠。

When ovule orientation is orthotropous the chalaza corresponds to the point where the funicle is attached but in anatropous and campylotropous ovules the chalaza is some distance from the funicle.

当胚珠的方向是直生胚珠时，合点和珠柄连成一条直线，当胚珠是倒生胚珠或弯生胚珠时，合点和珠柄之间有一定的距离。

Chalazogamy A method of fertilization in angiosperms in which the pollen tube enters the ovule by the chalaza instead of through the micropyle, penetrating the placenta en route.

合点受精：被子植物的一种受精方式，花粉管是通过合点部分而不是通过珠孔进入胚珠的。

Dioecism, cylindrical flower balls hung, raw male top, female flower by the multi-chip ball Megasporogenesis plume leaves composed of yellowish-brown, edge of Health ovule.

雌雄异株，雄球花圆柱形，生雄株顶端，雌球花由多片羽状大孢子叶组成，黄褐色，边缘生胚珠。

The central portion of an ovule in which the embryo sac develops ;the megasporangium.

珠心胚珠的中心，胚芽囊在此发育；大孢子囊

Embryological observations on Crawfurdia delavayi, Tripterospermum cordatum, T. chinense, Gentiana striata and Pterygocalyx yolubilis show that the group under study is greatly diverse in differentiation and development of anther wall, type of ovule and placentae, synergid and antipodal cell in embryo sac, testa and embryogeny etc. The embryological characters are different among Crawfurdia, Tripterospermum and Gentiana Sect.

胚胎学 本文对披针叶蔓龙胆C.delavayi、双蝴蝶T.chinense、峨眉双蝴蝶T.cordatum、条纹龙胆G.striata和翼萼蔓P.voiubilis作了较详细的胚胎学研究，这些类群在花药壁的分化和形成、胚珠和胎座类型、卵器中的助细胞和反足细胞、种皮以及胚发育等特征上存在差异，并且在胚胎学特征上各自拥有原始和进化的性状。

The artificial flower doctrine that with German botanist Engele is a delegate thinks the flower of angiosperm and gymnospermous ball flower agree completely, every stamen and carpel, be equivalent to a male flower that degrades extremely and female flower respectively, consequently tentative idea angiosperm is to come from child plant hemp is yellow kind yellow Ephedra Campylopoda of curved handle hemp, following plan institute are shown, in this tentative idea, the bud of male flower piece turn into perianth, the bud of female flower piece turn into carpel, the small bud of every male flower piece after disappearing, remain a stamen only, female flower small bud piece ovule is remained only after disappearing, ministry of foundations of move unripe Yu Zi.

以德国植物学家恩格勒为代表的假花学说认为被子植物的花和裸子植物的球花完全一致，每个雄蕊和心皮，分别相当于1个极端退化的雄花和雌花，因而设想被子植物是来自棵子植物麻黄类的弯柄麻黄Ephedra campylopoda，如下图所示，在这个设想里，雄花的苞片变为花被，雌花的苞片变为心皮，每个雄花的小苞片消失后，只剩下一个雄蕊，雌花小苞片消失后只剩下胚珠，着生于子房基部。

Go to your desktop and right click in a blank space.

请到您的桌面，然后右击一个空白。

Tara appears in Buddhism, Jainism, and particularly, Tibetan Lamaism, as a complex array of manifestations: goddess of ascetism and mysticism, mother creator, protectress of all humans as they cross the sea of life.

度母出现在佛教，耆那教里面，尤其是西藏的喇嘛教，作为一系列的陈列阵容；神秘的女神，创世之母，人类横过生命之海洋的女性保护者。