论文部分内容阅读
对无融合生殖水稻材料ＨＤＡＲ００２六个株系的胚胎学研究结果表明，６个株系无融合生殖胚的发生具有多源性，未受精胚囊内胚的发生有两种方式：即卵细胞的孤雌生殖和助细胞的无配子生殖；此外珠心细胞可直接分裂形成不定胚。无融合生殖胚的启动分裂时期为开花前２～３ｄ，其胚胎发育过程基本同正常水稻，部分材料的胚在形态上与正常水稻有差异。同时还观察到ＨＤＡＲ００２胚胎发育中的多极核现象与无胚乳现象。
The results of embryological studies on six lines of HDAR002 in apomictic rice showed that there were multiple origins of apomictic embryos in six lines, Female reproductive and help cells without gametophyte; In addition, the heart cells can be directly divided into adventitious embryos. The initiation stage of apomictic embryos was 2 ~ 3d days before flowering. The embryo development process was basically the same as that of normal rice. The embryos of some materials were different in morphology from normal rice. Multipolar nuclei and endosperm-free phenomena in HDAR002 embryos were also observed.