A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn.

不定胚与合子胚之间不能划分出明显的界限.

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Its functions are like a zygotic embryo in giving rise to a new plant.

其功能象能产生一株新植物的合子胚.

辞典例句

The proembryo from zygotic cell divisions may be divided into three parts: proper , hypoblast and suspensor.

玉米合子细胞分裂形成的原胚分为胚柄 、 基与胚体三部分.

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The nucellar embryo suspensor , its development passed through the similar stages of the zygotic embryo.

珠心胚发育经历与合子胚相同的发育阶段.

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