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对诺丹冰草种子发育过程的切片进行观察和研究。合子的第一次分裂为横分裂,形成顶细胞和基细胞。接着顶细胞纵分裂,基细胞横分裂,胚胎发生属紫宛型。胚发育经过椭圆形至棒形,并出现凹陷,开始初分化直至成熟胚。部分种子出现有斜向原胚及胚囊中缺少胚的现象。胚乳为核型胚乳,胚乳细胞化始于多细胞原胚期,成熟胚乳最外层发育糊粉层。其它胚乳细胞充满淀粉粒。珠心与珠被在胚发育过程中细胞质作为营养物质被吸收、解体,细胞壁则被挤压成为一厚壁层,构成乳熟期的种皮。子房壁细胞中的大量淀粉粒在胚、胚乳的发育过程中作为营养物质被吸收。
The observation and research on the slice of the process of the seed development of the genus. The first division of zygotic division into transverse division, the formation of apical and basal cells. Then the vertical cell division, basal cell division, embryogenesis is a purple type. The embryos develop oval to rod-shaped, with depressions that begin to initially differentiate into mature embryos. Part of the seeds appeared oblique proembryo embryo sac and the lack of embryo phenomenon. Endosperm is nuclear endosperm, endosperm cell initiation begins in multicellular embryos, and the outermost layer of mature endosperm develops aleurone. Other endosperm cells are full of starch grains. Beads and beads during the embryonic development of the cytoplasm as a nutrient is absorbed, disintegration, the cell wall is squeezed into a thick walled layer, constitute the milk ripening of the seed coat. A large number of starch granules in the parietal cells in the embryo, endosperm development as a nutrient to be absorbed.