摘要
通过光镜观察发现:在离体条件下,嫁接后3 d 在自体嫁接假酸浆/假酸浆愈伤组织细胞中分化出管状分子和筛分子;贯通接穗和砧木的维管组织桥在嫁接后5 d 形成,整个嫁接发育过程约在嫁接后15 d 完成。用^(14)C 标记的蔗糖检验了同化物自接穗向砧木的输导,发现在嫁接后5 d 自接穗进入砧木的输导量有一个飞跃,揭示韧皮部桥在此期产生对同化物的输导能力。
It was found by observation using light microscopy that in the in virto autograft Nicandra physaloides/Nicandra physaloides the xylem and pholem elements were differentiated from callus cells 3 days after graftig.The continuous vascular tissues connecting two graft partners were formed 5 days after grafting.The development of in vitro graft has been finished about 15 days after grafting.The assimilate transport from scion into stock were studied by using ^(14)C-labelled sucrose.The fact.that there was a re- markable increase in the rate of the assimilate transporting from scion into stock in the 5th day after grafting,demonstrated that the phloem transport started at this time.
关键词
植物
离体嫁接
维管组织
假酸浆
发育
Plant in vitro graft
vascular tissue
assimilate transport
Nicandra physaloides
