摘要
本实验对临猗梨枣、壶瓶枣、晋矮1号等13个品种的枣胚的发育过程进行了观察,并诱导晋矮1号成熟胚的愈伤组织通过体细胞胚发生途径形成再生植株。结果表明:体细胞胚产生于愈伤组织的表层细胞或内部细胞。在鱼雷胚期已有导管的分化,子叶期的维管组织呈“Y”形。枣合子胚及体细胞胚的发育均经历了原胚、球形胚、心形胚、鱼雷胚和子叶胚五个时期。大多数品种的枣胚从球形胚期或心形胚期即开始败育,只有极少数品种可发育到成熟胚,而且合子胚形成的能力、胚败育时发育的程度等均存在着大的品种间差异,同一品种甚至同一子房内胚的发育进程也不同步。
The results of embryological observation on embryo development in the thirteen cuhivars of jujube indicated that they shared the same experience from proembryo to globular embryo, heart-shaped embryo,torpedo-shaped embryo and cotyledon stage embryo. Embryo began aborting from globular or heart-shaped embryo period in most of cuhivars of jujube, but in few of them embryo could keep synchronous developing to cotyledon stage embryo. And the courses of embryo development were not synchronous.
出处
《分子细胞生物学报》
CSCD
北大核心
2006年第5期423-430,共8页
Journal of Molecular Cell Biology
基金
山西省科技攻关项目(011023)。
关键词
枣
胚发育
胚败育
体细胞胚发生
Jujube. Embryo development. Embryo aborting. Somatic embryogenesis
