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- Cytokinesis in microspore mother cells is simultaneous, forming tetrahedral tetrads. 小孢子母细胞的分裂属于同时型,产生四面体排列的小孢子。
- The microspore mother cells undergo meiosis, the tetrahedral tetrads of microspores are formed by simultaneous cytokinesis. 花粉母细胞减数分裂后细胞质同时型分裂。
- The microspores in tetrad stage showed three arrangements, such as isobilateral tetrad, decussate tetrad, and tetrahedral tetrad. 四分体有3种类型: 左右对称型、四面体型、交叉型;
- Tetrahedral tetrads 四合体花粉
- tetrahedral tetrad 四面体形四合花粉
- Cytokinesis is of the simultaneous type and microspore tetrads are mainly tetrahedral. 小孢子母细胞减数分裂为同时型,四分体的排列方式为四面体形;
- Cytokinesis was simultaneous and the arra ngement of microspores in the tetrad was tetrahedral. 胞质分裂为同时型,四分体中小孢子排列呈正四面体形。
- The tetrads eventually shrivel or are resorbed. 这种四分体最终萎缩或被再吸收。
- The simultaneous cytokinesis in microspore mother cells leads to tetrahedral as well as isobilateral (bilaterally symmetrical) tetrads. 小孢子母细胞在减数分裂过程中胞质分裂为同时型,小孢子四分体为四面体型,也有左右对称型的;
- The cytokinesis of microspore mother cell in meiosis is simuteneous,and the tetrad are tetrahedral. 四分体胞质分裂为同时型。
- The pollen grains still to keep tetrahedral form. 小孢子四分体为四面体型。
- The microsporic tetrads of the fertile line belonged to the tetrahedral type, and mature pollen was two-celled with bristles on the surface. 可育系小孢子母细胞经过减数分裂形成四面体形的四分体,成熟花粉是二细胞型,表面有刺。
- The micronuclei were not observed in tetrad stage . 四分体阶段有微核。
- The other cells of the tetrad undergo degeneration. 胚囊发育类型为单孢子蓼型胚囊;
- Only a fraction of the A ions are in tetrahedral sites. 只有一部分A离子处在四面体的位置上。
- The archesporial cells differentiated from single archesporium, the meiosis of microspore mother cells were continuous type and tetrads were tetrahedral. 小孢子母细胞减数分裂为连续型,形成的四分体为四面体型排列;
- During the microsporocyte meiosis process, the cytoplasm division could be attributed to the simultaneous type, while the microsporocyte tetrad belongs to tetrahedral type. 小孢子母细胞减数分裂过程中的胞质分裂为同时型,小孢子4分体为四面体形;
- The microspores in tetrad stage showed tetrahedron structure. 小孢子四分体为四面体型。
- Which undergoes meitotic division and forms a linear tetrad. 由孢原细胞直接发育形成大孢子母细胞。
- Abnormal development was observed at tetrad and mature embryo sac. 在四分体和成熟胚囊时期观察到了异常发育现象。