Ascospore Mutants and Genetic Map of Stock Free

Abstract

Three hundred and seventy mutants of the ascomycete stock were isolated. They were assigned to at least 75 loci. Mutations in 33 loci affect ascospore morphology: 19 of these loci affect pigmentation, 5 affect pigment distribution and 9 affect shape. The reliability of various phenotypes and the role of multigenic control on ascospore morphogenesis are discussed. Other mutations affect the mycelial growth rate or morphology and sporulation. A total of 56 loci have been mapped in 13 linkage groups corresponding to at least nine chromosomes. Using an intermediary strain, successful crosses between two intersterile stocks of ( and ) demonstrated that 12 pairs of mutants isolated in each stock correspond to 12 homologous loci.

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1981-08-01
2024-03-29
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