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条斑紫菜壳孢子幼苗非基部假根的生长 被引量:2
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作者 汤晓荣 费修绠 《青岛海洋大学学报(自然科学版)》 CSCD 1998年第4期582-586,共5页
用条斑紫菜壳孢子作材料,对室内(10~25℃,8~45μmolphotonm-2s-1,12L∶12D)萌发的壳孢子苗进行观察,结果是:10~20℃,壳孢子苗形态正常,只有最靠近基部的细胞长出假根;而25℃的不同光强... 用条斑紫菜壳孢子作材料,对室内(10~25℃,8~45μmolphotonm-2s-1,12L∶12D)萌发的壳孢子苗进行观察,结果是:10~20℃,壳孢子苗形态正常,只有最靠近基部的细胞长出假根;而25℃的不同光强下,相当比例的幼苗表现分段现象;每个藻段基部细胞有一个较大的液泡,细胞的长宽比接近1,从这一细胞长出假根的现象较普遍。假根长出的方向多数向着藻体的基部,个别向着藻体端部。非基部假根的产生有两个必要的条件:(a)壳孢子苗是形态嵌合体;(b)培养温度是25℃。这一现象在紫菜中首次报道,并对其出现的普遍性和产生机理进行了讨论。 展开更多
关键词 紫菜 非基部假根 形态嵌合体 壳孢子幼苗
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POSS-embedded supramolecular hyperbranched polymers constructed from a 1→7 branching monomer with controllable morphology transitions 被引量:3
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作者 Xing Wang Yanyu Yang +2 位作者 Linfeng Fan Fei Yang Decheng Wu 《Science China Chemistry》 SCIE EI CAS CSCD 2018年第3期311-318,共8页
The research on the supramolecular hyperbranched polymers(SHPs) that combines the advantages of supramolecular polymer and hyperbranched architecture has attracted considerable interests in many applications. Here we ... The research on the supramolecular hyperbranched polymers(SHPs) that combines the advantages of supramolecular polymer and hyperbranched architecture has attracted considerable interests in many applications. Here we demonstrate a simple approach to prepare POSS-embedded supramolecular hyperbranched polymers(POSS-SHPs) with varied morphology and size by controlling monomer concentration and mixed solvents. The SHPs formations can further transfer into the core-shell structured micelles by addition of competitive guests based on the double supramolecular driving forces. 展开更多
关键词 POSS-embedded polymer supramolecular hyperbranched polymer host-guest interaction morphology transition
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