Abstract
Genetic analysis of crosses between two induced, ineffectively nodulating mutants of common bean, NOD238 and NOD109, revealed that their mutated nodulation phenotype is under the control of the same locus in both mutants. The two mutants also resulted allelic for poor pod fertility, the other trait common to the mutants. F 1 plants from crosses with their wild types nodulated effectively and had wild type pod fertility. Ineffective nodulation and poor pod fertility traits co-segregated in the F 2 generation in which plants with the mutant nodulation and pod fertility phenotypes represented 12-5% of the total population. Analysis in F 3 confirmed that these plants were homozygous for both mutated characters
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