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The Journal of Heredity 1982:73(1):64-68
© 1982 The American Genetic Association 73:64-68

research-article

Inheritance of a uniflora mutant in the tomato

C. E. Mero, and S. Honma

Department of Horticulture, Michigan State University East Lansing, MI 48824

Abstract

Inheritance of a uniflora (one-flower-per-truss) mutant of tomato was determined from crosses involving uniflora and Michigan State Forcing (simple inflorescence), Pennorango (pseudo-simple inflorescence), and Apsory (compound inflorescence). Uniflora was also crossed with MSU 100 (single-flower-per-truss) to learn the relationship between these mutants. The data from these crosses suggest that the uniflora inflorescence is conditioned by one major gene with modifiers. Genetic models for the inheritance of uniflora inflorescence from crosses of uniflora and Pennorange and Apsory are presented. A nonallelic relationship between the genes conditioning uniflora (uf) and single-flower-per-truss (sft) is suggested by an F1 phenotype of simple inflorescence for the cross uniflora x MSU 100, and by the differences in inheritance observed when uniflora and MSU 100 are crossed with Pennorange and Apsory.


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