tetrads
英
美
网络 四联球菌; 四分体; 四元组; 四体花粉
双语例句
- Cytological analysis showed a large number of abnormal tetrads in mutant anther, especially hexads, pentads and irregular tetrads, which indicated abnormalities in meiosis.
细胞学观察发现突变体的花药中形成大量异常的四分体,特别是六分体、五分体和不规则的四分体,这表明突变体的减数分裂可能出现问题。 - Some microspore tetrads which conglutinated with each other formed complex microspore tetrads on white cucumber.
白皮黄瓜部分小孢子四分体之间相互粘连在一起,相互粘连的胼胝质壁水解形成复合小孢子四分体; - Ultrastructure and development of the microspore in Cunninghamia lanceolata ( lamb.) hook& ⅱ. tetrads, microspore, and tapetum
杉木小孢子发育过程中细胞的超微结构&Ⅱ.四分体、小孢子、绒毡层 - Cytological observation on the transgenic plants indicated that abortion of microspore development occurred at the stages of from tetrads to uninucleate.
通过对转基因植株进行细胞学染色、切片观察等方法,显示转基因后代小孢子败育发生在四分体到单核期。 - The results showed that the microspore abortion occurred at the stage of microspore mother cell, tetrads and uninucleate microspore.
结果表明,小孢子的败育发生在小孢子母细胞时期、四分体时期以及单核小孢子时期。 - Based on this, double exchange of tetrads and centromere mapping are analysed and discussed in detail.
在此基础上,对双交换四分子的分析和着丝粒作图进行了详细地讨论。 - The insoluble polysaccharides are at very low level in the MMC, tetrads and functional megaspore stages while RNA and protein are at higher level in all of them.
大孢子母细胞、大孢子四分体及功能大孢子中含较少不溶性多糖,但却含丰富的RNA和蛋白质。 - Hypertrophy and hyperplasia of tapetum at tetrads stage were related to pollen abortion.
四分体时期绒毡层肥大增厚可能与花粉败育有关。 - Most macrospore tetrads are linear and a few are T-shaped;
大孢子四分体多数为直线形排列,少数为T字形排列; - The shapes and forms of tetrahedral tetrads grains may be described with a new method of polar coordinate that is more exact and more direct than with traditional measurement method of polar axis ( P) and equatorial axis ( E).
用极坐标法描述四合体花粉的新方法可以表现其饱满度,比较传统上用极轴、赤道轴的长短表现花粉平面大小的方法,更加准确而直观。