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作 者 ：田成玉;李春英;赵春建;祖元刚*

期 刊 ：植物研究 2007年 27卷 1期 页码：34-37

关键词：樟子松；受精作用；胚；胚乳；发育；

Keywords:Pinus sylvestris var. mongolica, fertilization, embryo, endosperm, development,

摘 要 ：樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合，进行受精作用，其后，受精卵进行游离核分裂，形成8个子核时，开始形成细胞壁。它们再分裂1次，形成16个细胞的原胚。接着胚柄细胞层迅速生长、伸长，把下面的原胚送出颈卵器基部的细胞壁，进入胚乳中的溶蚀腔。原胚吸收溶蚀腔中的营养，生长发育。初期，胚的数目往往很多，但常常只有1个发育成熟。

Abstract:The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so. Then fertilized egg made division of free nuclei and cell wall was began to form while 8 daughter nucleus forming. When they were divided again, proembryo containing 16 cells was formed. In succession, cell layer of suspensor rapidly grew, elongated and down proembryo was carried away cell wall of archegonial base, then get into corrosion cavity in endosperm. Proembryo absorbed nutrition in corrosion cavity and grew, developed. In the first stage, the number of embryoes were very much, but only one developed to mature as usual.

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