unfertilized embryo

基本解释

While this is occurring an unfertilized egg cell is taken from a Blackface ewe with its DNA filled nucleus taken out leaving a nucleus free egg cell that will later produce an embryo (3).
（接着如果把它）放在一个细胞核已去除的黑面母羊的的营养细胞中，它一会儿就会产生一个胚芽。
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Embryo was formed utonomously in the unfertilized ovules. Globular embryo, two polar nuclei and antipodal cell mass could be observed n the embryo sacduring 1 to 2 days before and after anthesis.
在开花前或开花后1～2天的胚囊中可发现球形胚、游离的二个极核和反足细胞团。