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In order to determine the best indirect selection criteria for genetic  improvement of biological nitrogen fixation, sixty four common bean genotypes  were cultivated in two randomized complete block design. Genotypes were  inoculated with bacteria Rhizobium legominosarum biovar Phaseoli isolate  L-109 only in one of the experiments. The second experiment was considered as  check for the first. Correlation analysis showed positive and highly  significant correlation of majority of the traits with percent of nitrogen  fixation. Step-wise regression designated that traits percent of total  nitrogen of shoot, number of nodule per plant and biological yield accounted  for 92.3 percent of variation exist in percent of nitrogen fixation. Path  analysis indicated that these traits have direct and positive effect on  percent of nitrogen fixation. Hence, these traits are promising indirect  selection criteria for genetic improvement of nitrogen fixation capability in  common bean genotypes especially in early generations

genetika

Multivariate analysis and determination of the best indirect selection criteria to genetic improvement the biological nitrogen fixation ability in common bean genotypes (Phaseolus vulgaris L.)