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过氧化物酶是植物体内广泛存在的一种酶,植物生长调节物质可以使这些酶发生变异。在植物形态发育和细胞组织功能特化过程中,甚至在细胞的生长周期中都发生过氧化物酶同工酶的变化。Galston(1969)指出:遗传、激素及外界环境对植物生长发育的调节作用与过氧化物酶同工酶的变化有关,IAA能通过改变过氧化物酶不同的同工酶水平(激活或抑制某些区带的同工酶),调节IAA自身的破坏性。过氧化物酶酶系常表现有吲哚乙酸氧化酶的活性反应和反映植物体内激素水平。这些反应对树木插条生根有很大影响。 本试验采用几种生长调节物处理较难生根的河北杨(Populus hopeiensis)插条,分析研究它们对插条过氧化物酶同工酶变异的影响与插条生根的相互关系,并探讨激素促进插条生根的作用机理。
Peroxidase is a widely existing enzyme in plants. Plant growth regulators can make these enzymes mutate. Changes in peroxidase isoenzymes occur during plant morphogenesis and in the functionalization of cell tissues, even during the cell’s growth cycle. Galston (1969) pointed out: genetic, hormonal and external environment on the regulation of plant growth and development and changes in peroxidase isoenzyme, IAA by changing the different peroxidase isoenzyme levels (activation or inhibition of a Some isoenzymes) to regulate the destructiveness of IAA itself. Peroxidase enzymes often show indoleacetic acid oxidase activity and reflect the level of plant hormones. These reactions have a significant effect on rooting of tree cuttings. In this study, we used several growth regulators to treat Populus hopeiensis cuttings that were more difficult to root, and analyzed the relationship between their effects on the variation of peroxidase isozymes and the rooting of cuttings. The effects of hormone promotion Rooting mechanism of the cuttings.