chalazal

合点的
常用释义
合点的
卵带的

扩展信息

内脐
...生或半倒生胚珠从 珠柄通到合点的维管 束遗迹 4、内脐chalazal)—— 是胚珠时期合点的遗 迹,位于脐条的终 点 部位, …

例句

包含游离核的合点端胚乳部分形成几个裂片。

Seeds obovoid, base rostrate, apex retuse, chalazal knot rounded, ventral holes furrowed from base nearly to apex.

种子倒卵球形,基部具喙,先端微凹,种脐圆形,腹面洞棱槽自基部几乎至先端。

Cell wall of the egg is complete while cellularization, but its chalazal part disappeared when the egg is mature.

细胞化胚囊时期的卵细胞具完整壁;卵细胞成熟时,合点端细胞壁消失;

成熟胚囊的合点端狭长。

Seeds obovoid, apex rounded and retuse, chalazal knot ovate-elliptic, ventral holes obelliptic.

种子倒卵球形,先端圆形和微凹,种脐卵状椭圆形,腹面洞倒椭圆形。

After fertilization, the zygote and the proembryo also lie in the chalazal end.

受精后,合子和原胚亦位于合点端。

The haustorium cellularizated from the micropylar end to chalazal end at the later globular stage.

球形胚晚期吸器自珠孔端向合点端逐渐细胞化。

花瓣7-11毫米;子房具短柔毛但不是白色被灰白毛;种子具不明显的合点领。

胚囊极性反转,即卵器位于合点端,而反足细胞位于珠孔端。

木兰科种子内种皮合点区形态及其系统学意义