Cinto R O, Rivas M, Frade A H
Departamento de Bioanálisis, Instituto Nacional de Farmacología y Bromatología, Buenos Aires, Argentina.
Rev Argent Microbiol. 1984;16(3):119-44.
Eighty-one morphologic and biochemical features of seventy Bacillus strains were studied. Techniques of Numerical Taxonomy were used for this purpose. One method of coding and four others of clustering methods were used. Clustering methods were: weighted an unweighted pair-groups methods using arithmetic averages (WPGMA and UPGMA, respectively) and those of simple and complete linkage. With this methodology four dendrograms were obtained. The highest cophenetic correlation coefficient (0,718) was obtained from UPGMA. With UPGMA a classification in eleven groups and fourteen subgroups was obtained. Group was defined as the cluster of strains linked with similarity coefficients greater than 0.700 and subgroup as the cluster of strains linked with similarity coefficients greater than 0.800. It is important to take into account that in WPGMA dendrogram a very similar distribution was observed. As in classical taxonomy, the characteristic morphologic and physiological variabilities of the genus Bacillus were observed.
研究了70株芽孢杆菌的81个形态学和生化特征。为此使用了数值分类学技术。采用了一种编码方法和其他四种聚类方法。聚类方法包括：分别使用算术平均值的加权和非加权成对组方法（分别为WPGMA和UPGMA）以及单链和完全连锁方法。通过这种方法获得了四个树状图。UPGMA获得了最高的共亲相关系数（0.718）。使用UPGMA获得了分为11个组和14个亚组的分类。组被定义为相似系数大于0.700的菌株簇，亚组被定义为相似系数大于0.800的菌株簇。重要的是要注意，在WPGMA树状图中观察到了非常相似的分布。与经典分类学一样，观察到了芽孢杆菌属的特征性形态和生理变异性。
