Abstract
Peroxidase isozymes in four geographical strains of Pharbitis nil, TO16 (Japanese), Tendan (Chinese), Nepalese and African, were compared. Though they had similar zymograms, the Nepalese and African strains showed one and three bands in addition to those found in TO16, respectively. The African strain had a cathodal band, 2C, while the others had 1C. Genetic analysis showed that these two isozymes were controlled by alleles Pe1C and Pe2C, respectively. A Japanese strain seemed to have a null form for 1C controlled by an inactive allele, PeO at the same locus.
