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- The embryo sacs observation is one of the main study method for embryology. 摘要胚囊观察是植物胚胎学的主要研究方法之一。
- The number of egg cells or synergids or antipodal cells in its embryo sacs increases or reduces. 部分胚囊内卵细胞、助细胞及反足细胞数目有所增减;
- Frequencies of apomictic embryo sacs were the highest in winter and summer respectively in two years. 两年中,无融合生殖胚囊出现的频率分别在冬季和夏季最高。
- Statistical analysis of incidence of apomictic and sexual embryo sacs indicated significant difference in seasons. 结果表明:无融合生殖胚囊和有性生殖胚囊的频率在不同季节差异十分显著。
- Fur hermore there are double archesporial cells and double embryo sacs in Psathyrostachys huashanica. 此外,在华山新麦草中发现有双孢原细胞及双胚囊的现象。
- Autotetraploid strains which are developed from diploid individuals by colchicine treatments exhibit high variation rates of embryo sacs. 摘要以秋水仙素加倍的同源四倍体水稻三系株系具有高比率的变异胚囊。
- In mature embryo sacs, significant amounts of CaM kinase was also observed in the egg cell, central cell and at the interface of these two cells. 在成熟胚囊的卵细胞、中央细胞以及二者的分界面上也有少量分布。
- Variability in incidence of apomictic and sexual embryo sacs was detected in Apluda mutica at Guangzhou City during different seasons in a wild population for two years. 摘要对广州地区水蔗草在不同季节的无融合生殖胚囊和有性生殖胚囊频率进行了研究。
- The ACP frequently occurs in autotetraploid rice that leads to the increase in diversity of the embryo sacs and simultaneously influences seed germination. 反足细胞的增殖比较频繁,这导致四倍体胚囊的多样性进一步增加,也对结实性带来一定影响。
- The SV includes deletion, duplication and location variation, which suggests the occurrence of the variations of the eight nuclei, seven celled embryo sacs of the Polygonum type. 结构变异包括八核七细胞结构的缺失、重复和位置异常,反映了蓼型胚囊典型结构不同形式的变异;
- Both polygonum type and panicum type embryo sac have embellum. 有性生殖和无孢子生殖的胚囊中均有胚珠附器存在;
- 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。
- Manipulation of pollen protoplasts, generative cells, sperms, embryo sacs and egg cells, in vitro intergametic fusion and gameto-somatic fusion are of main interest in current subjects. 花粉原生质体、生殖细胞、精子、胚囊、卵细胞的操作、雌雄配子体外融合、配子-体细胞杂交等,代表了当前的主要研究趋势。
- Genesis of megaspore and development of embryo sac in Carica papaya L. 番木瓜的大孢子发生与胚囊发育。
- These abnormalities would cause the abnormal structure of mature embryo sac. 这些异常可能最终导致多种结构异常成熟胚囊的形成。
- While in the Angiophyta the female gametophyte is simply the EMBRYO SAC. 被子植物门的雌配子体为简单的胚囊;
- The development of embryo sac in Prunus americana Marsh var. is often abnormal. 鸡心李(Prunus americana Marsh var.;)
- The chalazal end megaspore develops into the embryo sac mother cell. 合点端大孢子发育为胚囊母细胞。
- With embryo sac haustorium in chalazal end,the embryo sac is Endymion type. 胚囊发育类型为英地百合型 ,合点端形成胚囊吸器。
- Embryo sac elongated at 1-nucleate stage by fusion of small vacuoles. 功能大孢子时期核糖体密集, 线粒体和质体分裂以增加数目;
