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对香蕉试管苗大田植株随机取样进行染色体变异的检测分析,发现染色体变异株的比例平均达65.7%,其中最低50%,最高87.5%,混倍体是变异的主要类型,约占46%,而非整接体居次,约占19%。对试管苗大田植株同工酶变异的比较分析,发现变异性最大的醇是苹果酸脱氢酶,最小的是脂酶,由平均每位点等位基因有效数(Ae)反映出的群体的分化程度显示,各群体分化程度不一致。聚类分析结果表明,同一苗厂的苗的相对遗传距离近,而不同来源群体间的距离较远。
The banana plantlets were randomly sampled from the field of chromosome mutation analysis and found that the proportion of chromosomal aberrations averaged 65.7%, of which the lowest 50%, the highest 87.5%, the main type of variation is about 46% , Rather than the integration body ranking, accounting for 19%. A comparative analysis of plant isozyme isozymes in plantlets showed that the most variable alcohol was malate dehydrogenase and the smallest was lipase. The average number of alleles per locus (Ae) Differentiation showed that the degree of differentiation of each group is inconsistent. The results of cluster analysis showed that the relative genetic distance of seedlings in the same seedling plant was close, and the distance between different source groups was far.