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。
Those abnormal embryo sacs having abnormal fertility dued to no normal eggs, which caused seed setting rate to drop.
这些异常结构的胚囊由于没有正常的卵细胞，不能正常受精，影响子粒结实。
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