nucellus [nju:'seləs]

nucellus的基本解释

n.

珠心, [植]珠心

与nucellus相关的网络例句 [注：此内容来源于网络，仅供参考]

Lthough a low frequency of abnormal growthof nucellus was observed,no embryo originating from nucellus cell and integumentwas found.

PⅣ珠心组织出现低频率的异常生长现象，但未观察到由珠心细胞发育形成的不定胚。

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。

After zygote dividing,the degeneration of nucellusgains the upper hand,and almost all nucellus cell disappear in 4-5 days after flowingexcept for the most outside nucellus.

合子分裂以后则以退化为主，到开花后4-5天，珠心组织除了表皮细胞外，其他几乎都解体了。

与nucellus相关的网络解释 [注：此内容来源于网络，仅供参考]

nucellus：珠心

在雄配子体发育的同时,子房内壁形成一个或多个突起发育成胚珠,成熟的胚珠有1~2层珠被(integument),珠心(nucellus)的一个细胞发育成大孢子母细胞,再经减数分裂,形成4个单倍体的大孢子.

nucellus embryo：珠心胚

nucellus 珠心 | nucellus embryo 珠心胚 | nuchal organ 颈器