1887

Abstract

SUMMARY: A chromosomal linkage map of ten markers was established for by the four-factor cross method and allele-gradient analysis. Mutants were obtained by nitrous acid treatment as well as by UV mutagenesis. The fertility of crosses was enhanced over 100-fold by pSAM2, a plasmid present in some strains of , and over 1000-fold by the conjugative plasmid pIJ303.

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/content/journal/micro/10.1099/00221287-134-2-395
1988-02-01
2019-10-19
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http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-134-2-395
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