被子植物受精过程中单倍体的精细胞与卵细胞融合，产生二倍体的合子，使得父母亲本双方的遗传信息整合为合子基因组。但对合子发育和其后的胚胎发生中是否双方都有相同的贡献却是个争论了二十余年仍悬而未决的问题。以往的研究仅仅关注了合子分裂后顶细胞系中父母亲本起源基因转录本数量的比较分析。本项目试图另辟蹊径，重点分析胚柄发育过程中父母亲本起源基因转录本数量与分布动态，同时，与胚体作比较分析。并进而筛选胚柄细胞特异的父母亲本起源基因，验证其对胚胎发育的影响。鉴于顶、基细胞系的发育命运、模式和结局大相径庭，本项目的结果有望填补以往研究的空白，提供更精确的实验证据，对上述悬而未决的问题给出更合理而全面的答案。

During fertilization a sperm cell fuses with an egg cell, which produces a zygote with developmental information integrated from both maternal and paternal parents. However, whether both parents equally contribute to the subsequent zygote development and early embryogenesis has been a debatable question for more than 20 years and still remains unclear. Previous works only focus on the transcript.analysis the parental-of-origin genes in apical cell lineage. Here, we try to focus on the transcript analysis in basal cell lineage. Since apical and basal cell lineage are distinct in cell fate, developmental pattern and destination, this project may provide unique chance to elucidate parental contributions to the early embryogenesis and hopefully give a more reasonable answer to the debating question.