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从小麦雄性不育系、保持系的10个不同组织、器官中共检测出8种过氧化物酶,在叶、芽鞘、根、节、节间、穗轴、叶鞘和芒中,不育系和保持系的过氧化物酶基本相同,说明这种酶由细胞核编码,但在花粉粒发育的3个不同时期,不育系与保持系间的过氧化物酶有明显差异,表现为不育系中的过氧化物酶同工酶多于保持系,这可能是由于不育系中细胞质不育基因对核基因的表达有调控作用,这种调控作用表现为不育细胞质基因的去阻遏作用,即不育细胞质基因可以去除细胞核中编码过氧化物酶基因的阻遏作用,使不育系中有更多的过氧化物酶基因得以表达,造成不育系中过氧化物酶同工酶多于保持系的现象.
Eight kinds of peroxidases were detected in 10 different tissues and organs of male sterile lines of wheat and maintainer lines. Among the leaves, bud sheaths, roots, nodes, internodes, cobwebs, leaf sheaths and males, CMS lines And maintain the Department of peroxidase is basically the same, indicating that the enzyme encoded by the nucleus, but pollen grains in the development of three different periods, there is a significant difference between the male sterile line and the maintainer line peroxidase, showed infertility There were more peroxidase isozymes in maintainer lines than in maintainer lines, which may be due to the regulation of cytoplasmic male sterility genes on the expression of nuclear genes in CMS lines. The regulation of sterility is due to the derepression of sterility cytoplasmic genes , That is, the sterile cytoplasmic gene can remove the nucleus encoding the peroxidase gene repression, so that more sterile peroxidase gene can be expressed, resulting in more sterile peroxidase isoenzyme To maintain the Department of the phenomenon.