论文部分内容阅读
在植物进化过程中,形成了不同亲缘关系的物种。一定的亲缘关系反映了植物在基因型上存在某种相关,分类学中一般依据物种所表现的性状,来判别这种联系。同工酶是基因表达的产物,可以从同工酶酶谱的分析来识别基因的存在和表达。种与种或品种之间,酶谱的共同特征越多,说明其亲缘关系越近。这对研究物种起源和变异过程,以及杂交育种中亲本的选择都有重要意义。李继耕等人在作物中,已有一些研究成果,吴郁文等提出属和品系中存在“标志带”的概念,树木方面严仁龄等对杨树五个不同品种的皮层和叶柄,进行了过氧化物酶同工酶分析,表明了各品种在酶谱上,存在差异,也存在某些共同点。本试验对杨树21个试验材料,进行叶的过氧化物酶同工酶的分析,试图通过酶谱分析,来了解杨树各种间及品种间的亲缘关系。
In the evolution of plants, the formation of different kinship species. A certain relationship reflects the plants in the genotype there is a certain correlation, taxonomy generally based on the performance of species to determine this relationship. Isoenzymes are the product of gene expression and can be used to identify the presence and expression of a gene from an isozyme zymogram. Between species and species or varieties, the more common features of the zymogram, indicating that the closer its kinship. This is of great significance to the study of the origin and variation of species and the selection of parents in hybrid breeding. Li Jigeng et al. Have made some research achievements in crops. Wu Yuwen et al. Proposed the concept of “sign band” in the genus and genus. In the aspect of trees, Yan Riling et al. Conducted experiments on five different varieties of cortex and petiole of poplar, Enzyme isoenzyme analysis showed that there are differences in the enzyme spectrum of the varieties, but also some commonalities. In this experiment, 21 experimental materials of poplar were used to analyze the peroxidase isoenzyme of leaves, trying to understand the genetic relationship among various species and varieties of poplar through the zymogram analysis.