Number of normal and abnormal embryo of treated group in 2-cell stage had no significance difference comparing with control group either (P> 0.05);

细胞期试验组正常胚胎、异常胚胎数量与对照组相比，也无统计学上的差异（P> 0 05）；

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The percentage of each kind of abnormal embryo sac was significantly different in each variety, suggesting that the abnormal phenomena were related possibly to the genotype of variety.

同一品种内异常类型的频率也存在明显的差异，显示异常结构胚囊的形成可能与品种的基因型有密切关系。

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Embryos at 4 ~ 8 cell stage showed higher survival rate and lower abnormal embryo rate than embryos at multicellular stage or early gastrula stage when radiated at the same dose and dose rate.

在相同剂量和剂量率下，处于4 ~ 8细胞期的胚胎存活率比多细胞期和囊胚早期高，而畸形率低。

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