Genetical analysis of merodiploidy in Rhizobium lupini |
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| Authors: | R. Springer and W. Heumann |
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| Affiliation: | (1) Institut für Mikrobiologie und Biochemie, Lehrstuhl Mikrobiologie, Universität Erlangen-Nürnberg, Friedrichstr. 33, D-8520 Erlangen, Federal Republic of Germany |
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| Abstract: | Summary The cytology of transfer diploidy produced in R. lupini by conjugation has been investigated. Since merodiploid donor strains transfer the diploid region as one transfer unit it is concluded that in merodiploid strains the two homologous regions are inserted in tandem sequence.It has been discussed that the segregation patterns of diploid clones indicate that in this conjugation system the exogenote insertion always occurs in the zygote after transfer and before recombination. |
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