It was found that callose appears in microsporangium at the microspore mother cell formation stage.

結(jié)果發(fā)現(xiàn)国产人成激情视频在线观看，胼胝質(zhì)最早于小孢子母細(xì)胞形成期出現(xiàn)于花粉囊中午夜爽爽成人免费视频观看。

At the early stage,spo- rogenous cells inside the microsporangium were seen grouping together into small aggregates each containing few cells.

由于不同的蘭花所形成的花粉塊的形狀和結(jié)構(gòu)有一定的差異，這些性狀常被利用作分類之用〔3一習(xí)毛在线。

The primary sporogenous cells divided into the second sporogenous cells which would turn into microspore mother cells in a microsporangium. The cytokinesis in meiosis of the microspore mother cells was of modified simultaneous type, forming the decussate, isobilateral or T-shaped tetrads.

初生造孢細(xì)胞分裂形成次生造孢細(xì)胞免费一级大黄片A片，次生造孢細(xì)胞再轉(zhuǎn)化為小孢子母細(xì)胞，小孢子母細(xì)胞減數(shù)分裂的胞質(zhì)分裂為修飾性同時(shí)型激情图片欧美性爱，四分體排列方式為交叉型国产迷在线、對(duì)稱型或"T"型，成熟花粉粒二細(xì)胞型欧美淫欲视频，開(kāi)花時(shí)散出美女的私密秘网站。

The primary sporogenous cells divided into the second sporogenous cells which would turn into microspore mother cells in a microsporangium. The cytokinesis in meiosis of the microspore mother cells was of modified simultaneous type, forming the decussate, isobilateral or T-shaped tetrads.

初生造孢細(xì)胞分裂形成次生造孢細(xì)胞，次生造孢細(xì)胞再轉(zhuǎn)化為小孢子母細(xì)胞，小孢子母細(xì)胞減數(shù)分裂的胞質(zhì)分裂為修飾性同時(shí)型97久久久久人妻碰碰碰碰，四分體排列方式為交叉型、對(duì)稱型或&T&型一二三四日本高清视频动漫，成熟花粉粒二細(xì)胞型找个av网站，開(kāi)花時(shí)散出。