STUDIES ON INTERSPECIFIC HYBRID IN PHARBITIS

IV. GENETIC ANALYSIS OF PEROXIDASE ISOZYMES IN P. NIL AND P. PURPUREA HYBRID

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The interspecific hybrids between Pharbitis nil Choisy and P. purpurea Roth were very low in fertility or completely sterile. F₂ segregations were studied on the cathodal peroxidase isozymes. P. purpurea has 3C isozyme and P. nil has 2C (Africa) and 1C (Tendan and others). The gene Pe^3C specifying 3C isozyme is a codominant allele with Pe^2C and Pe^1C(0).